Utility for data juggling.
Project description
source: www.irasutoya.com
DataJuggler
This library provides utility classes and helper functions for data processing. This is spin-off project from scrapinghelper. This project is inspired by follow great projects.
Features
- 100% backward-compatible, you can safely wrap existing dictionaries and list.
- Keypath list-index support (also negative) using the standard [n] suffix.
- aDict support dot-notation access to value of dictionaries.
- aDict support immutable and hashable of dictiinary.
- uDict support Keylist and Keypath which are pointing to valaues of dictionaries.
- uDict and many helper functions parse methods to retrieve data as needed.
- iList support immutable and hashable of list.
- iList support hold attributes using aDict.
- serializer support 17 different formats:
- bson, dill, json, msgpack, phpserialize, pickle, serpent, yaml
- json:cusom, yaml:cusom, msgpack:custom, toml, xml
- querystring, ini, csv, cloudpickle,
- base64(support encrypt/decrypt)
classes
- class BaseDict Factory class for custom dictionary.
- class IODict Factory class for IO serializable dictionary.
- class aDict Allow to access using dot notation for dictionary.
- class Keypath and Keylist type and manage for keypath and Keylist
- class uDict Allow to access using keypath and keylist.
- class iList Allow hashable and immutable list. when call freeze().
- class StrCase Convert case for object(s).
- class TypeValidator drop in replace for isinstance() for convinient.
- class ValueValidator validator for value.
- class AbstractSerializer factory class for custom serializer
- class AbstractClassSerializer factory class for custom class serializer
utilities for string manupulate helper functions.
replace_values()- Replace objects for object(s).omit_values()- Omit values for object(s).rename_duplicates()- Rename duplicated strings to append a number at the end.split_chunks()- Split iterable object into chunks.urange()- Return an object that produces a sequence of integes.copy_docstring- Copying the docstring of function onto another function by name
if pandas installed, follows functions are enabled. otherwise raise NotImplementedError when function call it.
add_df()- Add data into DataFrame.df_compare()- Check DataFrame is equals.
Installation
- Run
pip install datajuggler
or set required modules.
pip install "datajuggler[database]"pip install "datajuggler[requests]"pip install "datajuggler[yaml]"
and/or if you want to enable all serialzier.
pip install "datajuggler[serializer]"
...etc.
Getting Started
aDict
aDict allow to access using dot notation for values of dictionary. and support freeze/unfreeze object. validator for value.
In [1]: from datajuggler import aDict, uDict, iList
In [2]: data = { 'one': { 'two': { 'three': { 'four': 4 }}}}
In [3]: a = aDict(data)
In [4]: a.one.two.three.four
Out[4]: 4
In [5]: a.one.two.three.four = 3
In [6]: a.one.two.three.four
Out[6]: 3
In [7]: a.freeze()
In [8]: hash(a)
Out[8]: 2318099281826460897
In [9]: try:
...: a.one.two.three.four=10
...: except AttributeError as e:
...: print(e)
...:
aDict frozen object cannot be modified.
In [10]: a.unfreeze()
In [11]: a.one.two.three.four = 10
In [12]: try:
...: hash(a)
...: except AttributeError as e:
...: print(e)
...:
unhashable not frozen object.
In [13]:
uDict
uDict is utilized class support keylist and keypath accessing to values.
In [1]: from datajuggler import uDict, Keylist, Keypath
In [2]: data = { "a": 1,
...: "b": { "c": { "x": 2, "y": 3, },
...: "d": { "x": 4, "y": 5, },
...: "e": [ { "x": 1, "y": -1, "z": [101, 102, 103], },
...: { "x": 2, "y": -2, "z": [201, 202, 203], },
...: { "x": 3, "y": -3, "z": [301, 302, 303], },
...: ],
...: },
...: }
In [3]: d = uDict(data)
In [4]: d['a']
Out[4]: 1
In [5]: d[Keylist(['b', 'e[1]', 'z[2]'])]
Out[5]: 203
In [6]: d[Keypath('b.e[1].z[2]')]
Out[6]: 203
In [7]:
iList
iList is universal object with list and aDict.
In [1]: from datajuggler import iList
In [2]: l = iList()
...: assert l == []
In [3]: l = iList([1,2,3])
...: assert l == [1,2,3]
In [4]: l = iList()
...: try:
...: l[0] = 1
...: except IndexError as e:
...: print(e)
...:
list assignment index out of range
In [5]: l = iList([1])
...: l[0] = 10
In [6]: l1 = iList([1,2,3,4,5])
...: l2 = iList([1,2,3,4,5])
In [7]: assert l1 == l2
In [8]: l1 = iList([1,2,3,4,5])
...: l2 = list([1,2,3,4,5])
In [9]: assert l1 == l2
In [10]: l1 = iList([5,4,3,2,1])
...: l2 = list([1,2,3,4,5])
...: assert l1 != l2
In [11]: l1 = iList([1, 2, 3])
In [12]: try:
...: hash(l1)
...: except AttributeError as e:
...: print(e)
...:
unhashable not frozen object.
In [13]: l1.freeze()
In [14]: hash(l1)
Out[14]: 7029740037309777799
In [15]: try:
...: l1[0] = 10
...: except AttributeError as e:
...: print(e)
...:
iList frozen object cannot be modified.
In [16]: l1.unfreeze()
In [17]: l1[0] = 10
In [18]: l = iList([1,2,3])
In [19]: l.Hello='Python'
In [20]: l.Hello
Out[20]: 'Python'
In [21]: l == [1,2,3]
Out[21]: True
In [22]: l.get_attrs()
Out[22]: {'Hello': 'Python'}
In [23]:
class BaseDict
BaseDict is internal base class for custom dictionary. this class has follows methods.
update(*args, **kwargs)get(key: Hashable, default=None))setdefault(key: Hashable, default=None)fromkeys(sequence, values, inplace=False)fromvalues(sequence, base=1, prefix=None, format="{:02}",inplace=False)fromlists(keys: Sequence, values: Sequence, inplace=False)to_dict(obj)from_dict(obj, factory=None, inplace=False)
fromkeys()
Create a new dictionary with keys from iterable and values set to value.
If set True to inplace, perform operation in-place.
In [1]: from datajuggler.core import BaseDict
In [2]: data = [ 'January', 'February', 'March', 'April' ]
In [3]: BaseDict().fromkeys(data,2)
Out[3]: BaseDict({'January': 2, 'February': 2, 'March': 2, 'April': 2})
In [4]: d = BaseDict()
In [5]: d.fromkeys(data, 2, inplace=True)
In [6]: d
Out[6]: BaseDict({'January': 2, 'February': 2, 'March': 2, 'April': 2})
In [7]:
fromvalues()
Create a new dictionary from list of values.
keys automaticaly generate as interger or str.
base is the starting number.
if set 'name' to prefix, keys will be use 'name01'...
and if set "{:03}" to format, keys will "name_001".
So, set '' to prefix, key as str from interger.
If set True to inplace, perform operation in-place.
In [7]: BaseDict().fromvalues(data)
Out[7]: BaseDict({1: 'January', 2: 'February', 3: 'March', 4: 'April'})
In [8]: BaseDict().fromvalues(data, base=0)
Out[8]: BaseDict({0: 'January', 1: 'February', 2: 'March', 3: 'April'})
In [9]: BaseDict().fromvalues(data, base=100)
Out[9]: BaseDict({100: 'January', 101: 'February', 102: 'March', 103: 'April'})
In [10]: BaseDict().fromvalues(data, prefix='key_')
Out[10]: BaseDict({'key_1': 'January', 'key_2': 'February', 'key_3': 'March', 'key_4': 'April'})
In [11]: d = BaseDict()
In [12]: d.fromvalues(data, inplace=True)
In [13]: d
Out[13]: BaseDict({1: 'January', 2: 'February', 3: 'March', 4: 'April'})
In [14]:
fromlists()
Create a new dictionary from two list as keys and values.
Only the number of elements in the shorter of the two lists is processed.
If set True to inplace, perform operation in-place.
In [14]: keys = [ 'January', 'February', 'March', 'April' ]
In [15]: values = [ 1, 2, 3, 4 ]
In [16]: BaseDict().fromlists(keys, values)
Out[16]: BaseDict({'January': 1, 'February': 2, 'March': 3, 'April': 4})
In [17]: d = BaseDict()
In [18]: d.fromlists(keys, values, inplace=True)
In [19]: d
Out[19]: BaseDict({'January': 1, 'February': 2, 'March': 3, 'April': 4})
In [20]:
class IODict
this class support serialize method.
- Base64, CSV, INI, JSON, YAML, TOML, XML, query_strings, plist
if not installed PyYAML and/or toml and call from_yaml(), from_tomo(), will raise NotImpelementedError.
IODict is subclass of BaseDict.
-
from_base64(cls, s, subformat="json", encoding="utf-8", **kwargs) -
from_csv(cls, s, columns=None, columns_row=True, **kwargs) -
from_ini(cls, s, **kwargs) -
from_json(self, s, **kwargs) -
from_pickle(cls, s, **kwargs) -
from_plist(cls, s, **kwargs) -
from_query_string(cls, s, **kwargs) -
from_toml(cls, s, **kwargs) -
from_xml(cls, s, **kwargs) -
from_yaml(cls, s, **kwargs) -
from_serializer(cls, s, format, **kwargs) -
to_base64(cls, s, subformat="json", encoding="utf-8", **kwargs) -
to_csv(cls, s, columns=None, columns_row=True, **kwargs) -
to_ini(cls, s, **kwargs) -
to_json(self, s, **kwargs) -
to_pickle(cls, s, **kwargs) -
to_plist(cls, s, **kwargs) -
to_query_string(cls, s, **kwargs) -
to_toml(cls, s, **kwargs) -
to_xml(cls, s, **kwargs) -
to_yaml(cls, s, **kwargs) -
to_serializer(cls, s, format, **kwargs)
Serialization
datajuggler keep compatibitily for Serialize. and more easy add customaize serializer and class serializer.
datajuggler detect following serialization library, and it is automaticaly enable.
- cloudpickle
- bson
- dill
- msgpack
- serpent
- phpserialize
- PyYAML
- xmllibtodict
In [1]: from datajuggler import serializer as io
In [2]: import decimal
In [3]: import datetime
In [4]: data = {
...: 'a': 1,
...: 'b': decimal.Decimal('2'),
...: 'c': datetime.datetime(2020, 5, 24, 8, 20),
...: 'd': datetime.date(1962, 1, 13),
...: 'e': datetime.time(11, 12, 13),
...: 'f': [1, 2, 3, decimal.Decimal('4')]
...: }
In [5]: io.dumps(data, format='json')
Out[5]: b'{"a": 1, "b": {"__class_name__": "<class \'decimal.Decimal\'>", "__dumped_obj__": {"__type__": "Decimal", "value": "2"}}, "c": {"__class_name__": "<class \'datetime.datetime\'>", "__dumped_obj__": {"__type__": "datetime", "value": [2020, 5, 24, 8, 20, 0]}}, "d": {"__class_name__": "<class \'datetime.date\'>", "__dumped_obj__": {"__type__": "date", "value": [1962, 1, 13]}}, "e": {"__class_name__": "<class \'datetime.time\'>", "__dumped_obj__": {"__type__": "time", "value": [11, 12, 13]}}, "f": [1, 2, 3, {"__class_name__": "<class \'decimal.Decimal\'>", "__dumped_obj__": {"__type__": "Decimal", "value": "4"}}]}'
In [6]: io.dumps(data, format='msgpack')
Out[6]: b"\x86\xa1a\x01\xa1b\x82\xae__class_name__\xb9<class 'decimal.Decimal'>\xae__dumped_obj__\x82\xa8__type__\xa7Decimal\xa5value\xa12\xa1c\x82\xae__class_name__\xbb<class 'datetime.datetime'>\xae__dumped_obj__\x82\xa8__type__\xa8datetime\xa5value\x96\xcd\x07\xe4\x05\x18\x08\x14\x00\xa1d\x82\xae__class_name__\xb7<class 'datetime.date'>\xae__dumped_obj__\x82\xa8__type__\xa4date\xa5value\x93\xcd\x07\xaa\x01\r\xa1e\x82\xae__class_name__\xb7<class 'datetime.time'>\xae__dumped_obj__\x82\xa8__type__\xa4time\xa5value\x93\x0b\x0c\r\xa1f\x94\x01\x02\x03\x82\xae__class_name__\xb9<class 'decimal.Decimal'>\xae__dumped_obj__\x82\xa8__type__\xa7Decimal\xa5value\xa14"
In [7]: io.dumps(data, format='pickle')
Out[7]: b"\x80\x04\x95\xa8\x01\x00\x00\x00\x00\x00\x00}\x94(\x8c\x01a\x94K\x01\x8c\x01b\x94\x8c\x08builtins\x94\x8c\x07getattr\x94\x93\x94\x8c'datajuggler.serializer.class_serializer\x94\x8c\x16DecimalClassSerializer\x94\x93\x94)\x81\x94\x8c\x06decode\x94\x86\x94R\x94}\x94(\x8c\x08__type__\x94\x8c\x07Decimal\x94\x8c\x05value\x94\x8c\x012\x94u\x85\x94R\x94\x8c\x01c\x94h\x05h\x06\x8c\x17DatetimeClassSerializer\x94\x93\x94)\x81\x94h\n\x86\x94R\x94}\x94(h\x0e\x8c\x08datetime\x94h\x10]\x94(M\xe4\x07K\x05K\x18K\x08K\x14K\x00eu\x85\x94R\x94\x8c\x01d\x94h\x05h\x06\x8c\x13DateClassSerializer\x94\x93\x94)\x81\x94h\n\x86\x94R\x94}\x94(h\x0e\x8c\x04date\x94h\x10]\x94(M\xaa\x07K\x01K\reu\x85\x94R\x94\x8c\x01e\x94h\x05h\x06\x8c\x13TimeClassSerializer\x94\x93\x94)\x81\x94h\n\x86\x94R\x94}\x94(h\x0e\x8c\x04time\x94h\x10]\x94(K\x0bK\x0cK\reu\x85\x94R\x94\x8c\x01f\x94]\x94(K\x01K\x02K\x03h\x0c}\x94(h\x0eh\x0fh\x10\x8c\x014\x94u\x85\x94R\x94eu."
In [8]: io.dumps(data, format='yaml')
Out[8]: b"a: 1\nb: !!python/object/apply:decimal.Decimal\n- '2'\nc: 2020-05-24 08:20:00\nd: 1962-01-13\ne: !!python/object/apply:datetime.time\n- !!binary |\n CwwNAAAA\nf:\n- 1\n- 2\n- 3\n- !!python/object/apply:decimal.Decimal\n - '4'\n"
In [9]: s = io.dumps(data, format='yaml')
In [10]: io.loads(s, format='yaml')
Out[10]:
{'a': 1,
'b': Decimal('2'),
'c': datetime.datetime(2020, 5, 24, 8, 20),
'd': datetime.date(1962, 1, 13),
'e': datetime.time(11, 12, 13),
'f': [1, 2, 3, Decimal('4')]}
In [11]:
Custom Serializer
following exmaple is cloudpickle of datajuggler.
from datajuggler.serializer.abstract import (
AbstractSerializer, register_serializer
)
try:
import cloudpickle
cloudpickle_enable = True
except ImportError: # pragma: no cover
cloudpickle_enable = False
cloudpickle = AbstractSerializer()
class CloudpickleSerializer(AbstractSerializer):
def __init__(self):
super().__init__(format='cloudpickle',
extension=['pickle', 'cpickle'],
package='cloudpickle',
enable=cloudpickle_enable,
overwrite=True)
def loads(self, s, **kwargs):
data = cloudpickle.loads(s, **kwargs)
return data
def dumps(self, d, **kwargs):
data = cloudpickle.dumps(d, **kwargs)
return data
register_serializer(CloudpickleSerializer)
class Seriailizer
in case of datetime.dateitime, see follows code.
import datetime
from datajuggler.serializer.abstract import (
AbstractClassSerializer, register_serializer
)
from datajuggler.validator import TypeValidator as _type
class DatetimeClassSerializer(io.AbstractClassSerializer):
def __init__(self, cls=datetime.datetime):
super().__init__(cls)
def encode(self, obj):
if _type.is_datetime(obj):
return {
"__type__": "datetime",
"value": [
obj.year,
obj.month,
obj.day,
obj.hour,
obj.minute,
obj.second,
],
}
else:
super().encode(obj)
def decode(self, obj):
v = obj.get("__type__")
if v == "datetime":
return datetime.datetime(*obj["value"])
self.raise_error(obj)
register_serializer(DatetimeClassSerializer)
and provide helper functions.
get_format_by_path(path)get_serializer_by_format(format)get_serializers_extensions()autodetect_format(s)validate_file(s)is_url(s)is_dsn(s)read_contents(s)read_database(s)read_url(url, **options)read_file(filepath, encording="utf-8", **options)write_file(filepath, content, encording="utf-8", **options)
read_contents()
read contets from filepath. if requests installed and filepath is starts with 'http://' or 'https://', read contents from URL. if dataset installed and filepath is starts with 'sqlite://' or 'mysql://', 'postgresql://' read contents form DATABASE.
In [1]: from datajuggler import serializer as io
In [2]: io.read_contents('sqlite:///users.sqlite#users')
Out[2]:
[{'id': 1, 'name': 'David Coverdale', 'age': 71, 'belongs': 'Whitesnake'},
{'id': 2, 'name': 'Neal Schon ', 'age': 68, 'belongs': 'Journey'},
{'id': 3, 'name': 'Tom Scholz', 'age': 75, 'belongs': 'Boston'},
{'id': 4, 'name': 'David Gilmour', 'age': 75, 'belongs': 'Pink Floyd'},
{'id': 5, 'name': 'Ann Wilson', 'age': 71, 'belongs': 'Heart'},
{'id': 6, 'name': 'Nacy Wilson', 'age': 67, 'belongs': 'Heart'}]
In [3]: from datajuggler import aDict
In [4]: class User(aDict):
...: pass
...:
In [5]: users = io.read_contents('sqlite:///users.sqlite#users',row_type=User)
In [6]: users[0].name
Out[6]: 'David Coverdale'
In [7]: del users
In [8]: users = aDict('sqlite:///users.sqlite#users')._values
In [9]: users
Out[9]:
[aDict({'id': 1, 'name': 'David Coverdale', 'age': 71, 'belongs': 'Whitesnake'}),
aDict({'id': 2, 'name': 'Neal Schon ', 'age': 68, 'belongs': 'Journey'}),
aDict({'id': 3, 'name': 'Tom Scholz', 'age': 75, 'belongs': 'Boston'}),
aDict({'id': 4, 'name': 'David Gilmour', 'age': 75, 'belongs': 'Pink Floyd'}),
aDict({'id': 5, 'name': 'Ann Wilson', 'age': 71, 'belongs': 'Heart'}),
aDict({'id': 6, 'name': 'Nacy Wilson', 'age': 67, 'belongs': 'Heart'})]
In [10]:
if you want filtering data, pass to kwargs as follows.
In [1]: from datajuggler import serializer as io
In [2]: io.read_contents('sqlite:///users.sqlite#users')
Out[2]:
[{'id': 1, 'name': 'David Coverdale', 'age': 71, 'belongs': 'Whitesnake'},
{'id': 2, 'name': 'Neal Schon ', 'age': 68, 'belongs': 'Journey'},
{'id': 3, 'name': 'Tom Scholz', 'age': 75, 'belongs': 'Boston'},
{'id': 4, 'name': 'David Gilmour', 'age': 75, 'belongs': 'Pink Floyd'},
{'id': 5, 'name': 'Ann Wilson', 'age': 71, 'belongs': 'Heart'},
{'id': 6, 'name': 'Nacy Wilson', 'age': 67, 'belongs': 'Heart'}]
In [3]: io.read_contents('sqlite:///users.sqlite#users', id={'==': 2})
Out[3]: [{'id': 2, 'name': 'Neal Schon ', 'age': 68, 'belongs': 'Journey'}]
In [4]: io.read_contents('sqlite:///users.sqlite#users', id={'>=': 3})
Out[4]:
[{'id': 3, 'name': 'Tom Scholz', 'age': 75, 'belongs': 'Boston'},
{'id': 4, 'name': 'David Gilmour', 'age': 75, 'belongs': 'Pink Floyd'},
{'id': 5, 'name': 'Ann Wilson', 'age': 71, 'belongs': 'Heart'},
{'id': 6, 'name': 'Nacy Wilson', 'age': 67, 'belongs': 'Heart'}]
In [5]: io.read_contents('sqlite:///users.sqlite#users', id={'between': [2,4]})
Out[5]:
[{'id': 2, 'name': 'Neal Schon ', 'age': 68, 'belongs': 'Journey'},
{'id': 3, 'name': 'Tom Scholz', 'age': 75, 'belongs': 'Boston'},
{'id': 4, 'name': 'David Gilmour', 'age': 75, 'belongs': 'Pink Floyd'}]
In [6]: io.read_contents('sqlite:///users.sqlite#users', name={'like': '%WILSON'
...: })
Out[6]:
[{'id': 5, 'name': 'Ann Wilson', 'age': 71, 'belongs': 'Heart'},
{'id': 6, 'name': 'Nacy Wilson', 'age': 67, 'belongs': 'Heart'}]
In [7]:
and pass to row_type parameter as followings.
In [17]: d = io.read_contents('sqlite:///users.sqlite#users', row_type=aDict)
In [18]: users = list(d)
In [19]: users[0]
Out[19]: aDict({'id': 1, 'name': 'David Coverdale', 'age': 71, 'belongs': 'Whitesnake'})
In [20]: users[0].name
Out[20]: 'David Coverdale'
In [21]:
See also: dataset document
currently, not support write_database().
base64 and subformat.
base64 serializer accept subformat.
if pass 'base64,json' to format, recognaized as 'format, subformat'.
- dumps: if set 'subformat', first encoding subformat then encoding base64
- loads: if set 'subformat', first decoding base64 then decoding subformat
In [2]: from datajuggler import serializer as io
In [3]: import datetime
In [4]: import decimal
In [5]: data = {'a': 1,
...: 'b': decimal.Decimal('2'),
...: 'c': datetime.datetime(2020, 5, 24, 8, 20),
...: 'd': datetime.date(1962, 1, 13),
...: 'e': datetime.time(11, 12, 13),
...: 'f': [1, 2, 3, decimal.Decimal('4')]}
In [6]: io.dumps(data, format='base64,yaml:custom')
Out[6]: b'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'
In [7]: s = io.dumps(data, format='base64,yaml:custom')
In [8]: io.loads(s, format='base64,yaml:custom')
Out[8]:
{'a': 1,
'b': Decimal('2'),
'c': datetime.datetime(2020, 5, 24, 8, 20),
'd': datetime.date(1962, 1, 13),
'e': datetime.time(11, 12, 13),
'f': [1, 2, 3, Decimal('4')]}
In [9]: io.loads(s, format='base64')
Out[9]: b"a: 1\nb: !<tag:github.com/iisaka51/datajuggler,2022:python/datajuggler>\n __class_name__: <class 'decimal.Decimal'>\n __dumped_obj__:\n __type__: Decimal\n value: '2'\nc: !<tag:github.com/iisaka51/datajuggler,2022:python/datajuggler>\n __class_name__: <class 'datetime.datetime'>\n __dumped_obj__:\n __type__: datetime\n value:\n - 2020\n - 5\n - 24\n - 8\n - 20\n - 0\nd: !<tag:github.com/iisaka51/datajuggler,2022:python/datajuggler>\n __class_name__: <class 'datetime.date'>\n __dumped_obj__:\n __type__: date\n value:\n - 1962\n - 1\n - 13\ne: !<tag:github.com/iisaka51/datajuggler,2022:python/datajuggler>\n __class_name__: <class 'datetime.time'>\n __dumped_obj__:\n __type__: time\n value:\n - 11\n - 12\n - 13\nf:\n- 1\n- 2\n- 3\n- !<tag:github.com/iisaka51/datajuggler,2022:python/datajuggler>\n __class_name__: <class 'decimal.Decimal'>\n __dumped_obj__:\n __type__: Decimal\n value: '4'\n"
In [10]:
base64 and encrypt/decrypt.
base64 serializer accept password. If set 'password', perform operation encrypt/decrypt for dumps()/loads().
- dumps()
- raw_data -> subformat encode -> encrypt -> base64 encode
- loads()
- base64 decode -> decrypt -> subformat decode -> raw_data
In [5]: from datajuggler import serializer as io
In [6]: data = { 'January': 1, 'February': 2, 'March': 3, 'April': 4 }
In [7]: s = io.dumps(data, format='base64, json')
In [8]: io.loads(s, format='base64, json')
Out[8]: {'January': 1, 'February': 2, 'March': 3, 'April': 4}
In [9]: s = io.dumps(data, format='base64, json', password='python123')
In [10]: io.loads(s, format='base64, json', password='python123')
Out[10]: {'January': 1, 'February': 2, 'March': 3, 'April': 4}
In [11]: s
Out[11]: b'ra3xLVfJAfeEH3MTZ0FBQUFBQmpXZTl1WU1VU1Q2bDhWTG5iWF9oMEgtMjB2d1BNWUFhX2Y2cTZkcmgwZkFPQzhjV3Q2amY2QjlVbGFHODYzbUtYaHZPNjQ0N0J5OUY4R1oxSFBaVjV0VVFqY0tfbzgzVXBzQ2lCdWVORGpyMkhqVEhLRVMwNkxvbm5LbU5VZmlCWDR3QUlxekN6dGVYX2VwcUdWUHpvLVFwcXhBPT0='
In [12]: import base64
In [13]: base64.b64decode(s)
Out[13]: b'\xad\xad\xf1-W\xc9\x01\xf7\x84\x1fs\x13gAAAAABjWe9uYMUST6l8VLnbX_h0H-20vwPMYAa_f6q6drh0fAOC8cWt6jf6B9UlaG863mKXhvO6447By9F8GZ1HPZV5tUQjcK_o83UpsCiBueNDjr2HjTHKES06LonnKmNUfiBX4wAIqzCzteX_epqGVPzo-QpqxA=='
In [14]: io.loads(s, format='base64')
Out[14]: b'\xad\xad\xf1-W\xc9\x01\xf7\x84\x1fs\x13gAAAAABjWe9uYMUST6l8VLnbX_h0H-20vwPMYAa_f6q6drh0fAOC8cWt6jf6B9UlaG863mKXhvO6447By9F8GZ1HPZV5tUQjcK_o83UpsCiBueNDjr2HjTHKES06LonnKmNUfiBX4wAIqzCzteX_epqGVPzo-QpqxA=='
In [15]: io.loads(s, format='base64', password='python123')
Out[15]: b'{"January": 1, "February": 2, "March": 3, "April": 4}'
In [16]:
class aDict
Allow to access using dot notation for dictionary. This class is inspired by munch. aDict is subclass of BaseDict.
This class is inspired by munch and adict.
In [1]: from datajuggler import aDict
In [2]: d = aDict()
In [3]: d.python = 'great'
In [4]: d
Out[4]: aDict({'python': 'great'})
In [5]: d['python']
Out[5]: 'great'
In [6]: data = {'one': {'two': {'three': {'four': 4 }}}}
In [7]: d = aDict(data)
In [8]: d
Out[8]: aDict({'one': aDict({'two': aDict({'three': aDict({'four': 4})})})})
In [9]: d.one.two.three.four
Out[9]: 4
In [10]:
aDict support hashable and immutable dictionary.
freeze()- freeze object for immutable.unfreeze()- unfreeze object
built-in function hash() acceptfrozen object.
So, frozen aDict object is able to set as key to dictionary.
In [1]: from datajuggler import aDict
In [2]: d = aDict({'one': {'two': {'three': {'four': 4 }}}})
In [3]: d
Out[3]: aDict({'one': aDict({'two': aDict({'three': aDict({'four': 4})})})})
In [4]: d.one.two.three.four = 1
In [5]: d.freeze()
In [6]: try:
...: d.one.two.three.four = 2
...: except AttributeError as e:
...: print(e)
...:
aDict frozen object cannot be modified.
In [7]: d.unfreeze()
In [8]: d.one.two.three.four = 2
In [9]:
class Keypath and Keylist
This is utility class for uDict and manage for keypath and Keylist
data = { "a": 1,
"b": { "c": { "x": 2, "y": 3, },
"d": { "x": 4, "y": 5, },
"e": [ { "x": 1, "y": -1, "z": [101, 201, 301], },
{ "x": 2, "y": -2, "z": [102, 202, 302], },
{ "x": 3, "y": -3, "z": [103, 203, 303], },
],
},
}
Keylist(['b','e[1]', 'z[0]']) point to value 102.
Keypath(['b.e[1].z[0]']) point to value 102.
indexes of list should be integer or str([index]).
In [7]: Keylist(['b', 'e[1]', 'z[0]'])
Out[7]: Keylist(['b', 'e', 1, 'z', 0])
methods for Keylist class
keylistss(d: dict)to_keypath(d: dict)list2path(keylist)value()validate(keylist)
methods for Keypath class
keypaths(d: dict)to_keylist(keypath)path2list(keypath)value()validate(keypath)
keylists()
keylists() suppport list of key as keys.
keylists(obj, indexes=False)
In [1]: from datajuggler import keylists
...:
...: data = { "a": 1,
...: "b": { "c": { "x": 2, "y": 3, },
...: "d": { "x": 4, "y": 5, },
...: },
...: }
...:
...: expect = [ ["a"],
...: ["b"],
...: ["b", "c"],
...: ["b", "c", "x"],
...: ["b", "c", "y"],
...: ["b", "d"],
...: ["b", "d", "x"],
...: ["b", "d", "y"],
...: ]
...: result = keylists(data)
...: assert result == expect
In [2]: data = { 1: { 1: 1, },
...: 2: { 2: 1, },
...: 3: { None: 1, },
...: }
...: expect = [[1], [1, 1], [2], [2, 2], [3], [3, None]]
...: result = keylists(data)
...: assert result == expect
...: { "x": 2, "y": -2, "z": [2, 3, 4], },
...: { "x": 3, "y": -3, "z": [3, 4, 5], },
...: ],
...: },
...: }
...: expect = [
...: ["a"],
...: ["b"],
...: ["b", "c"],
...: ["b", "c", "x"],
...: ["b", "c", "y"],
...: ["b", "d"],
...: ["b", "d", "x"],
...: ["b", "d", "y"],
...: ["b", "e"],
...: ["b", "e[0]"],
...: ["b", "e[0]", "x"],
...: ["b", "e[0]", "y"],
...: ["b", "e[0]", "z"],
...: ["b", "e[0]", "z[0]"],
...: ["b", "e[0]", "z[1]"],
...: ["b", "e[0]", "z[2]"],
...: ["b", "e[1]"],
...: ["b", "e[1]", "x"],
...: ["b", "e[1]", "y"],
...: ["b", "e[1]", "z"],
...: ["b", "e[1]", "z[0]"],
...: ["b", "e[1]", "z[1]"],
...: ["b", "e[1]", "z[2]"],
...: ["b", "e[2]"],
...: ["b", "e[2]", "x"],
...: ["b", "e[2]", "y"],
...: ["b", "e[2]", "z"],
...: ["b", "e[2]", "z[0]"],
...: ["b", "e[2]", "z[1]"],
...: ["b", "e[2]", "z[2]"],
...: ]
...: result = keylists(data, indexes=True)
...: result.sort()
...: assert result == expect
In [4]: data = { "a": { "b": [
...: [1, 2],
...: [3, 4, 5],
...: [ { "x": 1, "y": -1, }, ],
...: ],
...: },
...: }
...: expect = [ ["a"],
...: ["a", "b"],
...: ["a", "b[0]"],
...: ["a", "b[0][0]"],
...: ["a", "b[0][1]"],
...: ["a", "b[1]"],
...: ["a", "b[1][0]"],
...: ["a", "b[1][1]"],
...: ["a", "b[1][2]"],
...: ["a", "b[2]"],
...: ["a", "b[2][0]"],
...: ["a", "b[2][0]", "x"],
...: ["a", "b[2][0]", "y"],
...: ]
...: result = keylists(data, indexes=True)
...: result.sort()
...: assert result == expect
In [5]: data = { "a": 1,
...: "b": { "c": { "x": 2, "y": 3, },
...: "d": { "x": 4, "y": 5, },
...: "e": [ { "x": 1, "y": -1, "z": [1, 2, 3], },
...: { "x": 2, "y": -2, "z": [2, 3, 4], },
...: { "x": 3, "y": -3, "z": [3, 4, 5], },
...: ],
...: },
...: }
...: expect = [ ["a"],
...: ["b"],
...: ["b", "c"],
...: ["b", "c", "x"],
...: ["b", "c", "y"],
...: ["b", "d"],
...: ["b", "d", "x"],
...: ["b", "d", "y"],
...: ["b", "e"],
...: ]
...: result = keylists(data, indexes=False)
...: result.sort()
...: assert result == expect
In [6]:
keypaths()
Keypath support attribute-styple access to value (dot-notation by default).
keypaths(obj, separator, indexes=False)
In [1]: from datajuggler import keypaths
...:
...: data = { "a": 1,
...: "b": { "c": { "x": 2, "y": 3 },
...: "d": { "x": 4, "y": 5 },
...: },
...: }
...: expect = [ "a",
...: "b",
...: "b.c",
...: "b.c.x",
...: "b.c.y",
...: "b.d",
...: "b.d.x",
...: "b.d.y",
...: ]
...:
...: result = keypaths(data)
...: assert result == expect
In [2]: data = { "a": 1,
...: "b": { "c": { "x": 2, "y": 3 },
...: "d": { "x": 4, "y": 5 },
...: },
...: }
...: expect = [ "a",
...: "b",
...: "b c",
...: "b c x",
...: "b c y",
...: "b d",
...: "b d x",
...: "b d y",
...: ]
...: result = keypaths(data, separator=" ")
...: assert result == expect
In [3]: data = { 1: { 1: 1 }, 2: { 2: 1 }, 3: { 3: 1 } }
...: expect = ['1', '1.1', '2', '2.2', '3', '3.3']
...: result = keypaths(data)
...: assert result == expect
In [4]: data = { "a": 1,
...: "b": { "c": { "x": 2, "y": 3, },
...: "d": { "x": 4, "y": 5, },
...: "e": [ { "x": 1, "y": -1, "z": [1, 2, 3], },
...: { "x": 2, "y": -2, "z": [2, 3, 4], },
...: { "x": 3, "y": -3, "z": [3, 4, 5], },
...: ],
...: },
...: }
...: expect = [ "a",
...: "b",
...: "b.c", "b.c.x", "b.c.y", "b.d", "b.d.x", "b.d.y", "b.e",
...: "b.e[0]", "b.e[0].x", "b.e[0].y", "b.e[0].z",
...: "b.e[0].z[0]", "b.e[0].z[1]", "b.e[0].z[2]",
...: "b.e[1]", "b.e[1].x", "b.e[1].y", "b.e[1].z",
...: "b.e[1].z[0]", "b.e[1].z[1]", "b.e[1].z[2]",
...: "b.e[2]", "b.e[2].x", "b.e[2].y", "b.e[2].z",
...: "b.e[2].z[0]", "b.e[2].z[1]", "b.e[2].z[2]",
...: ]
...:
...: result = keypaths(data, indexes=True)
...: assert result == expect
In [5]: data = { "a": 1,
...: "b": {
...: "c": { "x": 2, "y": 3, },
...: "d": { "x": 4, "y": 5, },
...: "e": [ { "x": 1, "y": -1, "z": [1, 2, 3], },
...: { "x": 2, "y": -2, "z": [2, 3, 4], },
...: { "x": 3, "y": -3, "z": [3, 4, 5], },
...: ],
...: },
...: }
...: expect = [ "a",
...: "b",
...: "b.c",
...: "b.c.x",
...: "b.c.y",
...: "b.d",
...: "b.d.x",
...: "b.d.y",
...: "b.e",
...: ]
...: result = keypaths(data, indexes=False)
...: assert result == expect
In [6]: data = { "a": { "b": [ [1, 2],
...: [3, 4, 5],
...: [ { "x": 1, "y": -1, }, ],
...: ],
...: },
...: }
...: expect = [ "a",
...: "a.b",
...: "a.b[0]",
...: "a.b[0][0]",
...: "a.b[0][1]",
...: "a.b[1]",
...: "a.b[1][0]",
...: "a.b[1][1]",
...: "a.b[1][2]",
...: "a.b[2]",
...: "a.b[2][0]",
...: "a.b[2][0].x",
...: "a.b[2][0].y",
...: ]
...: result = keypaths(data, indexes=True)
...: assert result == expect
In [7]:
list2path() and path2list()
Convert from/to keylists and keypaths.
In [1]: from datajuggler import Keylist, Keypath
...:
...: data = ['x', 'y', 'z']
...: expect = ['x.y.z']
...:
...: result = Keylist.list2path(data)
...: assert result == expect
In [2]: expect = ['x_y_z']
...: result = Keylist.list2path(data, separator='_')
...: assert result == expect
In [3]: data = [['x', 'y', 'z'], ['a', 'b', 'c']]
...: expect = ['x.y.z', 'a.b.c']
...: result = Keylist.list2path(data)
...: assert result == expect
In [4]: data = 'x.y.z'
...: expect = ['x', 'y', 'z']
...: result = Keypath.path2list(data)
...: assert result == expect
In [5]: data = 'x_y_z'
...: expect = ['x', 'y', 'z']
...: result = Keypath.path2list(data, separator='_')
...: assert result == expect
In [6]: data = ['x.y.z', 'a.b.c']
...: expect = [['x', 'y', 'z'], ['a', 'b', 'c']]
...: result = Keypath.path2list(data)
...: assert result == expect
In [7]:
class uDict
uDict is utilized dictionary which is subclass of IODict. This class is inspired by python-benedict. uDict support keypath and keylist.
uDict has following methods.
clean(d1: dict, strings=True, collections=True, inplace=False, factory=dict)clone(d1: dict, empty=False, memo=None)compare(d1: dict, d2: dict, keys=None, thrown_error=False)counts(pattern, d=None, count_for"key", wild=False, verbatim=False)filter(predicate, d=None, factory=dict)get_keys(d=None, output_as=None)get_values(keys, d=None)groupby(seq, key, factory=dict)invert(d=None, flat=False, inplace=False, factory=dict)keylists(d=None, indexes=False)keypaths(d=None, indexes=False, separator=".")map(func, d=None, map_for=None, inplace=False, factory=dict)merge(other, d=None, overwrite=False, inplace=False, factory=dict)move(key_src, key_dest, d=None, overwrite=False, inplace=False, factory=dict)nest(items, key, patrent_key, children_key)rename(key, key_new, d=None, case_name=None, overwrite=False, inplace=False, factory=dict)remove(keys, d=None, inplace=False, factory=dict)subset(keys, d=None, default=None, use_keypath=False, separator=".", inplace=False, factory=dict)find(keys, d=None, default=None, first_one=True, factory=dict)search(query, d=None, search_for="key", exact=False, ignore_case=False)sort(d=None, sort_by="key", reverse=False, inplace=False, factory=dict)swap(key1, key2, d=None, inplace=False, factory=dict)flatten(d=None, separator=".", inplace=False, factory=dict)unflatten(d=None, default=None, separator=".", inplace=False, factory=dict)traverse(callback, d=None, parents=[], *args, **kwargs)unique(d=None)get_items(loc, value, d=None, func=None, separator='.',inplace=False, factory=dict)pop_items(loc, value, d=None, func=None, separator='.',inplace=False, factory=dict)del_items(loc, value, d=None, func=None, separator='.',inplace=False, factory=dict)set_items(loc, value, d=None, func=None, separator='.',inplace=False, factory=dict)
helper functions are defined in datajuggler.dicthelper for normal dict objects.
d_clean()d_clone()d_compare()d_counts()d_filter()d_groupby()d_invert()d_map()d_merge()d_move()d_rename()d_remove()d_nest()d_subset()d_find()d_sort()d_search()d_swap()d_flatten()d_unflatten()d_traverse()d_unique()get_keys()get_values()get_items()pop_items()del_items()set_items()
clean() and d_clean()
def clean(self,
obj: Optional[dict]=None,
strings=True,
collections=True,
inplace: bool=False,
factory: Optional[Type[dict]]=None,
):
def d_clean(
obj: dict,
strings=True,
collections=True,
inplace: bool=False,
factory: Type[dict]=dict,
):
Clean the current dict instance removing all empty values:
None, '', {}, [], ().
If strings or collections (dict, list, set, tuple) flags are False, related empty values will not be deleted.
In [1]: from datajuggler import aDict
...: from datajuggler.dicthelper import d_clean
...:
...: data = {
...: "a": {},
...: "b": {"x": 1},
...: "c": [],
...: "d": [0, 1],
...: "e": 0.0,
...: "f": "",
...: "g": None,
...: "h": "0",
...: }
...:
...: expect = {
...: "b": {"x": 1},
...: "d": [0, 1],
...: "e": 0.0,
...: "h": "0",
...: }
...:
...: result = d_clean(data)
...: assert result == expect
In [2]: expect = {
...: "a": {},
...: "b": {"x": 1},
...: "c": [],
...: "d": [0, 1],
...: "e": 0.0,
...: "h": "0",
...: }
...:
...: result = d_clean(data, collections=False)
...: assert result == expect
In [3]: expect = {
...: "b": {"x": 1},
...: "d": [0, 1],
...: "e": 0.0,
...: "f": "",
...: "h": "0",
...: }
...:
...: result = d_clean(data, strings=False)
...: assert result == expect
In [4]: expect = aDict({
...: "b": {"x": 1},
...: "d": [0, 1],
...: "e": 0.0,
...: "h": "0",
...: })
...:
...: result = d_clean(data, factory=aDict)
...: assert result == expect
In [5]: expect = {
...: "b": {"x": 1},
...: "d": [0, 1],
...: "e": 0.0,
...: "h": "0",
...: }
...:
...: d_clean(data, inplace=True)
...: assert data == expect
In [6]:
clone() and d_clone()
def clone(self,
obj: Optional[dict]=None,
empty: bool=False,
memo: Optional[dict]=None,
factory: Optional[Type[dict]]=None,
):
def d_clone(
obj: dict,
empty: bool=False,
memo: Optional[dict]=None,
):
Return a clone (deepcopy) of the dict.
In [1]: from datajuggler.dicthelper import d_clone
...:
...: data = { "a": { "b": { "c": 1, }, }, }
...:
...: result = d_clone(data)
...: assert isinstance(result, dict) == True
...: assert result == data
In [2]: result["a"]["b"]["c"] = 2
...:
...: assert result["a"]["b"]["c"] == 2
...: assert data["a"]["b"]["c"] == 1
In [3]: data = { "a": { "b": { "c": 1, }, }, }
...: result = d_clone(data, empty=True)
...: assert isinstance(result, dict) == True
...: assert result == {}
In [4]:
compare() and d_compare()
def compare(self,
d1: dict,
d2: Optional[dict]=None,
*,
keys: Optional[Union[Hashable,list]]=None,
keylist: bool=False,
keypath: bool=False,
thrown_error: bool=False,
):
def d_compare(
d1: dict,
d2: dict,
*,
keys: Optional[Union[Hashable,list, Keylist, Keypath]]=None,
keylist: bool=False,
keypath: bool=False,
thrown_error: bool=False,
):
Compare tow dictionary with keys and return True when equal found values.
otherwise return False.
if not set second dictionary, use self object.
if not set keys, just compare two dictionaries,
if pass thrown_error=True, raise ValueError when not equal found values.
if passs keylist=True, keylist accept for key.
if passs keypath=True, keypath accept for key.
In [1]: from datajuggler import aDict, Keylist, Keypath
...: from datajuggler.dicthelper import d_compare
...:
...: d1 = {}
...: d2 = {}
...: result = d_compare(d1, d2)
...: assert result == True
In [2]: d1 = {1: 1}
...: d2 = {1: 1}
...: result = d_compare(d1, d2)
...: assert result == True
In [3]: d1 = {'1': 'one'}
...: d2 = {'1': 'one'}
...: result = d_compare(d1, d2)
...: assert result == True
In [4]: d1 = {'1': 'one'}
...: d2 = {'1': 2}
...: result = d_compare(d1, d2)
...: assert result == False
In [5]: d1 = { "a": 1, "b": [1,2,3] }
...: d2 = { "a": 1, "b": [1,2,3] }
...: result = d_compare(d1, d2)
...: assert result == True
In [6]: d1 = { "a": 1,
...: "b": 2,
...: "c": {
...: "d": {
...: "e": 3,
...: "f": 4,
...: "g": { "h": 5, },
...: }
...: },
...: }
...: d2 = { "a": 1,
...: "b": 2,
...: "c": {
...: "d": {
...: "e": 3,
...: "f": 4,
...: "g": { "h": 5, },
...: }
...: },
...: }
...: result = d_compare(d1, d2)
...: assert result == True
In [7]: d1 = { "a": 1,
...: "b": 2,
...: "c": {
...: "d": {
...: "e": 3,
...: "f": 4,
...: "g": { "h": 5, },
...: }
...: },
...: }
...: d2 = { "a": 1,
...: "b": 2,
...: "c": {
...: "d": {
...: "e": 13,
...: "f": 14,
...: "g": { "h": 5, },
...: }
...: },
...: }
...: result = d_compare(d1, d2, keys='b')
...: assert result == True
In [8]: d1 = { "a": 1,
...: "b": 2,
...: "c": {
...: "d": {
...: "e": 3,
...: "f": 4,
...: "g": { "h": 5, },
...: }
...: },
...: }
...: d2 = { "a": 1,
...: "b": 2,
...: "c": {
...: "d": {
...: "e": 13,
...: "f": 14,
...: "g": { "h": 5, },
...: }
...: },
...: }
...: result = d_compare(d1, d2, keys='d')
...: assert result == False
In [9]: d1 = { "a": 1,
...: "b": 2,
...: "c": {
...: "d": {
...: "e": 3,
...: "f": 4,
...: "g": { "h": 5, },
...: }
...: },
...: }
...: d2 = { "a": 1,
...: "b": 2,
...: "c": {
...: "d": {
...: "e": 13,
...: "f": 14,
...: "g": { "h": 5, },
...: }
...: },
...: }
...: result = d_compare(d1, d2, keys=Keylist(['c', 'd', 'g']))
...: assert result == True
In [10]: d1 = { "a": 1,
...: "b": 2,
...: "c": {
...: "d": {
...: "e": 3,
...: "f": 4,
...: "g": { "h": 5, },
...: }
...: },
...: }
...: d2 = { "a": 1,
...: "b": 2,
...: "c": {
...: "d": {
...: "e": 13,
...: "f": 14,
...: "g": { "h": 5, },
...: }
...: },
...: }
...: result = d_compare(d1, d2, keys=Keypath('c.d.g'))
...: assert result == True
In [11]:
counts() and d_counts()
def counts(self,
pattern: Union[Pattern, Hashable, Sequence],
obj: Optional[dict]=None,
count_for: DictItemType=DictItem.KEY,
wild: bool=False,
verbatim: bool=False,
) ->Union[int, dict]:
def d_counts(
obj: dict,
pattern: Union[Hashable, Pattern, Sequence],
count_for: DictItemType=DictItem.KEY,
wild: bool=False,
verbatim: bool=False,
) ->Union[int, dict]:
Counts of keys or values.
count_for accept "key" and "value".
if pass wild=True, match substr and ignore_case.
if pass verbatim=True, counts as it is.
In [1]: from datajuggler.dicthelper import d_counts
...:
...: data = {'x': {'y': {'z': [{'aA': 'v11', 'b': 'v12', 'c': 'v13'},
...: {'aA': 'v21', 'b': 'v22', 'c': 'v23'}]} }}
...: d_counts(data, 'aA')
Out[1]: 2
In [2]: d_counts(data, 'aA', count_for='key')
Out[2]: 2
In [3]: d_counts(data, 'aa', count_for='key')
Out[3]: 0
In [4]: d_counts(data, 'aa', count_for='key', wild=True)
Out[4]: 2
In [5]: d_counts(data, ['aA', 'b'])
Out[5]: defaultdict(int, {'aA': 2, 'b': 2})
In [6]: d_counts(data, ['aA', 'b'], wild=True)
Out[6]: defaultdict(int, {'aA': 2, 'b': 2})
In [7]: d_counts(data, ['a', 'b'], wild=True, verbatim=True)
Out[7]: defaultdict(int, {'aA': 2, 'b': 2})
In [8]: d_counts(data, 'v11', count_for='value')
Out[8]: {'v11': 1}
In [9]: d_counts(data, 'v1', count_for='value', wild=True)
Out[9]: {'v1': 3}
In [10]: d_counts(data, 'v1', count_for='value', wild=True, verbatim=True)
Out[10]: {'v11': 1, 'v12': 1, 'v13': 1}
In [11]: data = {'x': {'y': {'z': [{'aA': 100, 'b': 101, 'c': 103},
...: {'aA': 100, 'b': 101, 'c': 103}]} }}
...: d_counts(data, 100, count_for='value')
Out[11]: {100: 2}
In [12]:
filter() and d_filter()
def filter(self,
predicate: Callable,
obj: Optional[dict]=None,
factory: Optional[Type[dict]]=None,
):
def d_filter(
predicate: Callable,
obj: dict,
factory: Type[dict]=dict,
):
Create a new dictionary with filter items in dictionary by item.
Predicate function receives key, value arguments
and should return a bool value.
If set factory, create instance of factory class.
If set True to inplace, perform operation in-place.
In [1]: from datajuggler import uDict, aDict
...: from datajuggler.dicthelper import d_filter
...:
...:
...: is_janfeb = lambda x, y: x.endswith('ary')
...: data = { 'January': 1, 'February': 2, 'March': 3, 'April': 4 }
...:
...: d_filter(is_janfeb, data)
Out[1]: {'January': 1, 'February': 2}
In [2]: d_filter(is_janfeb, data, factory=uDict)
Out[2]: uDict({'January': 1, 'February': 2})
In [3]: is_even = lambda x, y: y % 2 == 0
...: d_filter(is_even, data)
Out[3]: {'February': 2, 'April': 4}
In [4]:
groupby() and d_groupby()
def groupby( self,
seq: list,
key: Hashable,
factory: Optional[Type[dict]]=None,
) -> dict:
def d_groupby(
seq: list,
key: Hashable,
factory: Type[dict]=dict,
) -> dict:
A groupby operation involves some combination of splitting the object, applying a function, and combining the results. This can be used to group large amounts of data and compute operations on these groups.
In [1]: from datajuggler import uDict, aDict
...: from datajuggler.dicthelper import d_groupby
...:
...: data = [
...: {"id": 1, "name": "John"},
...: {"id": 2, "name": "Paul"},
...: {"id": 3, "name": "David"},
...: {"id": 4, "name": "Freddie"},
...: {"id": 3, "name": "Jack"},
...: {"id": 1, "name": "Eddie"},
...: {"id": 3, "name": "Bob"},
...: {"id": 4, "name": "Maichael"},
...: {"id": 1, "name": "Edward"},
...: ]
...: expect = ( "{1: [{'id': 1, 'name': 'John'}, "
...: "{'id': 1, 'name': 'Eddie'}, "
...: "{'id': 1, 'name': 'Edward'}], "
...: "2: [{'id': 2, 'name': 'Paul'}], "
...: "3: [{'id': 3, 'name': 'David'}, "
...: "{'id': 3, 'name': 'Jack'}, "
...: "{'id': 3, 'name': 'Bob'}], "
...: "4: [{'id': 4, 'name': 'Freddie'}, "
...: "{'id': 4, 'name': 'Maichael'}]}" )
...: result = d_groupby(data, "id")
...: assert result.__repr__() == expect
invert() and d_invert()
def invert( self,
obj: Optional[dict]=None,
flat: bool=False,
inplace: bool=False,
factory: Optional[Type[dict]]=None,
) ->dict:
def d_invert(
obj: dict,
flat: bool=False,
inplace: bool=False,
factory: Type[dict]=dict,
) ->dict:
Return an inverted dict where values become keys and keys become values.
Since multiple keys could have the same value, each value will be a list of keys.
If pass flat=True each value will be a single value.
(use this only if values are unique).
In [1]: from datajuggler import aDict
...: from datajuggler.dicthelper import d_invert
...:
...:
...: data = { "a": 1, "b": 2, "c": 3, "d": 4, "e": 5}
...: expect = {1: ['a'], 2: ['b'], 3: ['c'], 4: ['d'], 5: ['e']}
...: result = d_invert(data)
...: assert result == expect
In [2]: data = { "a": 1, "b": 2, "c": 3, "d": 4, "e": 5}
...: expect = {1: ['a'], 2: ['b'], 3: ['c'], 4: ['d'], 5: ['e']}
...: d_invert(data, inplace=True)
...: assert data == expect
In [3]: data = { "a": 1, "b": 2, "c": 3, "d": 4, "e": 5}
...: expect = aDict({1: ['a'], 2: ['b'], 3: ['c'], 4: ['d'], 5: ['e']})
...: result = d_invert(data, factory=aDict)
...: assert result == expect
In [4]: data = { "a": 1, "b": 2, "c": 3, "d": 4, "e": 5}
...: expect = { 1: "a", 2: "b", 3: "c", 4: "d", 5: "e"}
...: result = d_invert(data, flat=True)
...: assert result == expect
In [5]: data = { "a": 1, "b": 2, "c": 3, "d": 4, "e": 5}
...: expect = { 1: "a", 2: "b", 3: "c", 4: "d", 5: "e"}
...: d_invert(data, flat=True, inplace=True)
...: assert data == expect
In [6]: data = { "a": 1, "b": 2, "c": 3, "d": 4, "e": 5}
...: expect = aDict({ 1: "a", 2: "b", 3: "c", 4: "d", 5: "e"})
...: result = d_invert(data, flat=True, factory=aDict)
...: assert result == expect
In [7]:
map() and d_map()
def map(self,
func: Callable,
obj: Optional[dict]=None,
map_for: Optional[DictItemType]=None,
inplace: bool=False,
factory: Optional[Type[dict]]=None,
) ->dict:
def d_map(
func: Callable,
obj: dict,
map_for: Optional[DictItemType]=None,
inplace: bool=False,
factory: Type[dict]=dict,
) ->dict:
Create a new dictionary with apply function to keys/value of dictionary.
if pass map_for=None apply function to key and value. (default)
if pass map_for="key" apply function to key.
if pass map_for="value" apply function to value.
If set factory, create instance of factory class.
If set True to inplace, perform operation in-place.
In [1]: from datajuggler import uDict, aDict
...: from datajuggler.dicthelper import d_map
...:
...:
...: data = { 'January': 1, 'February': 2, 'March': 3, 'April': 4 }
...: expect = { 1: 'January', 2: 'February', 3: 'March', 4: 'April' }
...: result = d_map(reversed, data)
...: assert result == expect
In [2]: expect = uDict({ 1: 'January', 2: 'February', 3: 'March', 4: 'April' })
...: result = d_map(reversed, data, factory=uDict)
...: assert result == expect
...:
In [3]: expect = { 1: 'January', 2: 'February', 3: 'March', 4: 'April' }
...: result = d_map(reversed, data, inplace=True)
...: assert data == expect
In [4]: data = { 'January': 1, 'February': 2, 'March': 3, 'April': 4 }
...: expect = uDict({ 'JANUARY': 1, 'FEBRUARY': 2, 'MARCH': 3, 'APRIL': 4 })
...: result = d_map(str.upper, data, map_for="key")
...: assert result == expect
In [5]: data = { 'Jack': [10, 11, 12], 'John': [8, 15, 3] }
...: expect = { 'Jack': 33, 'John': 26 }
...: result = d_map(sum, data, map_for="value")
...: assert result == expect
In [6]:
merge() and d_merger()
def merge(self,
others: list,
obj: Optional[dict]=None,
overwrite: bool=True,
concat: bool=False,
inplace: bool=False,
factory: Optional[Type[dict]]=None,
) ->dict:
def d_merge(
obj: dict,
others: Union[dict, list, tuple],
overwrite: bool=True,
concat: bool=False,
inplace: bool=False,
factory: Type[dict]=dict,
) ->dict:
Merge one or more dictionary objects into obj.
Sub-dictionaries keys will be merged toghether.
If pass overwrite=False, existing values will not be overwritten.
If pass concat=True, list values will be concatenated toghether.
If set factory, create instance of factory class.
If set True to inplace, perform operation in-place.
In [1]: from datajuggler import aDict
...: from datajuggler.dicthelper import d_merge
...:
...:
...: d1 = { "a": 1, "b": 1, }
...: d2 = { "b": 2, "c": 3, }
...: expect = { "a": 1, "b": 2, "c": 3, }
...: d_merge(d1, d2)
Out[1]: {'a': 1, 'b': 2, 'c': 3}
In [2]: d_merge(d1, d2, factory=aDict)
Out[2]: aDict({'a': 1, 'b': 2, 'c': 3})
In [3]: d_merge(d1, d2, inplace=True)
In [4]: d1
Out[4]: {'a': 1, 'b': 2, 'c': 3}
In [5]: d1 = {
...: "a": [0, 1, 2],
...: "b": [5, 6, 7],
...: "c": [],
...: "d": [],
...: }
...: d2 = {
...: "a": [3, 4, 5],
...: "b": [8, 9, 0],
...: "c": [-1],
...: }
...: expect = {
...: "a": [3, 4, 5],
...: "b": [8, 9, 0],
...: "c": [-1],
...: "d": [],
...: }
In [6]: d_merge(d1, d2)
Out[6]: {'a': [3, 4, 5], 'b': [8, 9, 0], 'c': [-1], 'd': []}
In [7]: d_merge(d1, d2, concat=True)
Out[7]: {'a': [0, 1, 2, 3, 4, 5], 'b': [5, 6, 7, 8, 9, 0], 'c': [-1], 'd': []}
In [8]: d1 = { "a": 1, "b": 1, }
...: d2 = { "b": 2, "c": 3, "d": 3, }
...: d3 = { "d": 5, "e": 5, }
...: d4 = { "d": 4, "f": 6, }
In [9]: d_merge(d1, [d2, d3, d4])
Out[9]: {'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5, 'f': 6}
In [10]: d_merge(d1, (d2, d3, d4))
Out[10]: {'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5, 'f': 6}
In [11]: d1 = {
...: "a": 1,
...: "b": {
...: "c": { "x": 2, "y": 3, },
...: "d": { "x": 4, "y": 5, },
...: "e": { "x": 6, "y": 7, },
...: },
...: }
...: d2 = {
...: "a": 0,
...: "b": {
...: "c": 1,
...: "d": { "y": 1, "z": 2, },
...: "e": {
...: "f": { "x": 2, "y": 3, },
...: "g": { "x": 4, "y": 5, },
...: },
...: },
...: }
In [12]: d_merge(d1, d2)
Out[12]:
{'a': 0,
'b': {'c': 1,
'd': {'x': 4, 'y': 1, 'z': 2},
'e': {'x': 6, 'y': 7, 'f': {'x': 2, 'y': 3}, 'g': {'x': 4, 'y': 5}}}}
In [13]: d_merge(d1, d2, overwrite=False)
Out[13]:
{'a': 1,
'b': {'c': 1,
'd': {'x': 4, 'y': 1, 'z': 2},
'e': {'x': 6, 'y': 7, 'f': {'x': 2, 'y': 3}, 'g': {'x': 4, 'y': 5}}}}
In [14]:
move() and d_move()
def move(self,
key_src: Union[str, list],
key_dest: Union[str, list],
obj: Optional[dict]=None,
*,
keep_order: bool=False,
overwrite: bool=True,
inplace: bool=False,
factory: Optional[Type[dict]]=None,
) ->dict:
def d_move(
obj: dict,
key_src: Union[str, list, dict],
key_dest: Optional[Union[str, list]]=None,
*,
overwrite: bool=True,
keep_order: bool=False,
inplace: bool=False,
factory: Type[dict]=dict,
) ->dict:
Create new dictionary which Move an item from key_src to key_dst.
It can be used to rename a key.
If key_dst exists and pass overwrite=True, its value will be overwritten.
if pass keep_order=True, keep ordered of dictionary. (may be slow).
If set factory, create instance of factory class.
If set True to inplace, perform operation in-place.
In [1]: from datajuggler import aDict
...: from datajuggler.dicthelper import d_move
...:
...: data = {
...: "a": { "x": 1, "y": 1, },
...: "b": { "x": 2, "y": 2, },
...: "c": { "x": 3, "y": 3, },
...: }
In [2]: d_move(data, "a", "a")
Out[2]: {'a': {'x': 1, 'y': 1}, 'b': {'x': 2, 'y': 2}, 'c': {'x': 3, 'y': 3}}
In [3]: d_move(data, "a", "d")
Out[3]: {'b': {'x': 2, 'y': 2}, 'c': {'x': 3, 'y': 3}, 'd': {'x': 1, 'y': 1}}
In [4]: d_move(data, "a", "d", overwrite=False)
Out[4]: {'b': {'x': 2, 'y': 2}, 'c': {'x': 3, 'y': 3}, 'd': {'x': 1, 'y': 1}}
In [5]: d_move(data, "a", "d", keep_order=True)
Out[5]: {'d': {'x': 1, 'y': 1}, 'b': {'x': 2, 'y': 2}, 'c': {'x': 3, 'y': 3}}
In [6]: d_move(data, "a", "d", factory=aDict)
Out[6]: aDict({'b': {'x': 2, 'y': 2}, 'c': {'x': 3, 'y': 3}, 'd': {'x': 1, 'y': 1}})
In [7]: d_move(data, "a", "d", inplace=True)
In [8]: data
Out[8]: {'b': {'x': 2, 'y': 2}, 'c': {'x': 3, 'y': 3}, 'd': {'x': 1, 'y': 1}}
In [9]:
rename() and d_rename()
def rename(self,
key: Union[Hashable,dict],
key_new: Optional[Hashable]=None,
obj: Optional[dict]=None,
case_name: Optional[str]=None,
*,
overwrite: bool=False,
keep_order: bool=False,
inplace: bool=False,
factory: Optional[Type[dict]]=None,
) ->dict:
def d_rename(
obj: dict,
key: Union[Hashable,dict, list],
key_new: Optional[Hashable]=None,
case_name: Optional[str]=None,
*,
overwrite: bool=False,
keep_order: bool=False,
inplace: bool=False,
factory: Type[dict]=dict,
) ->dict:
Create the new dictionary which is chnaged the key to key_new.
if key as dictionary {key: key_new}, change key using mapping dictionary.
If key_dst exists and pass overwrite=True, its value will be overwritten.
if pass keep_order=True, keep ordered of dictionary. (may be slow).
If set factory, create instance of factory class.
If set True to inplace, perform operation in-place.
In [1]: from datajuggler import aDict
...: from datajuggler.dicthelper import d_rename
...:
...: data = { "a": 1, "b": 2, "c": 3, "d": None, }
In [2]: d_rename(data, "a", "a")
Out[2]: {'a': 1, 'b': 2, 'c': 3, 'd': None}
In [3]: d_rename(data, "a", "A")
Out[3]: {'b': 2, 'c': 3, 'd': None, 'A': 1}
In [4]: d_rename(data, "a", "A", keep_order=True)
Out[4]: {'A': 1, 'b': 2, 'c': 3, 'd': None}
In [5]: try:
...: result = d_rename(data, "a", "b")
...: except KeyError as e:
...: print(e)
...:
"Invalid key: 'b', key already in dict and 'overwrite' is disabled."
In [6]: d_rename(data, "a", "b", overwrite=True)
Out[6]: {'b': 1, 'c': 3, 'd': None}
In [7]: d_rename(data, {'a': 'A', 'b': 'B'})
Out[7]: {'c': 3, 'd': None, 'A': 1, 'B': 2}
In [8]: d_rename(data, "b", "B", inplace=True)
In [9]: data
Out[9]: {'a': 1, 'c': 3, 'd': None, 'B': 2}
In [10]: data = { "First Name": 'jack', 'Last Name': 'bauwer' }
In [11]: d_rename(data, "First Name", case_name='snake')
Out[11]: {'Last Name': 'bauwer', 'first_name': 'jack'}
In [12]: keys = list(data.keys())
...: d_rename(data, keys, case_name='snake')
Out[12]: {'first_name': 'jack', 'last_name': 'bauwer'}
In [13]: d_rename(data, keys, case_name='camel')
Out[13]: {'firstName': 'jack', 'lastName': 'bauwer'}
In [14]:
remove() and d_remove()
def remove(self,
keys: Union[list, Hashable],
obj: Optional[dict]=None,
*,
inplace: bool=False,
factory: Optional[Type[dict]]=None,
):
def d_remove(
obj: dict,
keys: Union[list, tuple, Hashable],
*,
inplace: bool=False,
factory: Type[dict]=dict,
):
Create new dictionary which Remove multiple keys from the dict. It is possible to pass a single key or more keys (as list or *args).
In [1]: from datajuggler import aDict
...: from datajuggler.dicthelper import d_remove
...:
...: data = { "a": 1, "b": 2, "c": 3, "d": 4, "e": 5, }
In [2]: d_remove(data, "c")
Out[2]: {'a': 1, 'b': 2, 'd': 4, 'e': 5}
In [3]: d_remove(data, ["c", "d", "e"])
Out[3]: {'a': 1, 'b': 2}
In [4]: d_remove(data, ("c", "d", "e"))
Out[4]: {'a': 1, 'b': 2}
In [5]: d_remove(data, "c", factory=aDict)
Out[5]: aDict({'a': 1, 'b': 2, 'd': 4, 'e': 5})
In [6]: d_remove(data, "c", inplace=True)
In [7]: data
Out[7]: {'a': 1, 'b': 2, 'd': 4, 'e': 5}
In [8]:
nest() and d_nest()
def d_nest(
items: tuple,
id_key: Union[str, list],
parent_id_key: Union[str, list],
children_key: Union[str, list],
) -> list:
Nest a list of dicts at the given key and return a new nested list using the specified keys to establish the correct items hierarchy.
In [1]: from datajuggler.dicthelper import d_nest
...:
...: data = [
...: {"id": 1, "parent_id": None, "name": "John"},
...: {"id": 2, "parent_id": 1, "name": "Frank"},
...: {"id": 3, "parent_id": 2, "name": "Tony"},
...: {"id": 4, "parent_id": 3, "name": "Jimmy"},
...: {"id": 5, "parent_id": 1, "name": "Sam"},
...: {"id": 6, "parent_id": 3, "name": "Charles"},
...: {"id": 7, "parent_id": 2, "name": "Bob"},
...: {"id": 8, "parent_id": 3, "name": "Paul"},
...: {"id": 9, "parent_id": None, "name": "Michael"},
...: ]
In [2]: d_nest(data, "id", "parent_id", "children")
Out[2]:
[{'id': 1,
'parent_id': None,
'name': 'John',
'children': [{'id': 2,
'parent_id': 1,
'name': 'Frank',
'children': [{'id': 3,
'parent_id': 2,
'name': 'Tony',
'children': [{'id': 4, 'parent_id': 3, 'name': 'Jimmy', 'children': []},
{'id': 6, 'parent_id': 3, 'name': 'Charles', 'children': []},
{'id': 8, 'parent_id': 3, 'name': 'Paul', 'children': []}]},
{'id': 7, 'parent_id': 2, 'name': 'Bob', 'children': []}]},
{'id': 5, 'parent_id': 1, 'name': 'Sam', 'children': []}]},
{'id': 9, 'parent_id': None, 'name': 'Michael', 'children': []}]
In [3]: try:
...: result = d_nest(data, "id", "id", "children")
...: except ValueError as e:
...: print(e)
...:
keys should be different.
In [4]: try:
...: result = d_nest(data, "id", "parent_id", "id")
...: except ValueError as e:
...: print(e)
...:
keys should be different.
In [5]: try:
...: d_nest(data, "id", "parent_id", "parent_id")
...: except ValueError as e:
...: print(e)
...:
keys should be different.
In [6]: data = [
...: [{"id": 1, "parent_id": None, "name": "John"}],
...: [{"id": 2, "parent_id": 1, "name": "Frank"}],
...: ]
In [7]: try:
...: d_nest(data, "id", "parent_id", "children")
...: except ValueError as e:
...: print(e)
...:
element should be a dict.
In [8]:
subset() and d_subset()
def d_subset(
obj: dict,
keys: Union[str, list, tuple, Hashable],
*,
default: Optional[Any]=None,
use_keypath: bool=False,
separator: str=Default_Keypath_Separator,
inplace: bool=False,
factory: Type[dict]=dict,
):
Return a dict subset for the given keys. It is possible to pass a single key or more keys (as list or *args).
In [1]: from datajuggler import aDict
...: from datajuggler.dicthelper import d_subset
...:
...:
...: data = { "a": 1, "b": 2, "c": 3, "d": 4, "e": 5}
In [2]: d_subset(data, 'b')
Out[2]: {'b': 2}
In [3]: d_subset(data, ['b', 'd'])
Out[3]: {'b': 2, 'd': 4}
In [4]: d_subset(data, ('b', 'd'))
Out[4]: {'b': 2, 'd': 4}
In [5]: d_subset(data, ('b', 'd'), factory=aDict)
Out[5]: aDict({'b': 2, 'd': 4})
In [6]: d_subset(data, ('b', 'd'), inplace=True)
In [7]: data
Out[7]: {'b': 2, 'd': 4}
In [8]: data = { "a": 1,
...: "b": { "c": { "x": 2, "y": 3 },
...: "d": { "x": 4, "y": 5 },
...: },
...: }
In [9]: d_subset(data, keys='z', default={})
Out[9]: {'z': {}}
In [10]: try:
...: d_subset(data, keys='x', default={})
...: except KeyError as e:
...: print(e)
...:
"Multiple keys founded.'x'"
In [11]: d_subset(data, keys='x', default={}, use_keypath=True)
Out[11]: {'b.c.x': 2, 'b.d.x': 4}
In [12]: d_subset(data, keys='c')
Out[12]: {'c': {'x': 2, 'y': 3}}
In [13]: d_subset(data, keys=['c', 'd'])
Out[13]: {'c': {'x': 2, 'y': 3}, 'd': {'x': 4, 'y': 5}}
In [14]: d_subset(data, keys=['c', 'd'], use_keypath=True)
Out[14]: {'b.c': {'x': 2, 'y': 3}, 'b.d': {'x': 4, 'y': 5}}
In [15]: d_subset(data, keys=['c', 'd'],use_keypath=True, separator=' ')
Out[15]: {'b c': {'x': 2, 'y': 3}, 'b d': {'x': 4, 'y': 5}}
In [16]:
find() and d_find()
def d_find(
obj: dict,
keys: Union[list,Hashable],
default: Optional[Any]=None,
first_one: bool=True,
factory: Type[dict]=dict,
) -> Union[Any, dict]:
Return the match searching for the given keys.
if pass first_one=True, return first matches.
If no result found, default value is returned.
In [1]: from datajuggler.dicthelper import d_find
...:
...: data = { "a": 1, "b": 2, "c": 3, "d": None, }
In [2]: d_find(data, "b", 0)
Out[2]: 2
In [3]: d_find(data, "e", 0)
Out[3]: 0
In [4]: d_find(data, ["x", "y", "b", "z"], 5)
Out[4]: 2
In [5]: d_find(data, ["a", "x", "b", "y"], 5)
Out[5]: 1
In [6]: d_find(data, ["x", "y", "z"], 5)
Out[6]: 5
In [7]: d_find(data, ["x", "y", "z"], "missing")
Out[7]: 'missing'
In [8]: d_find(data, ["x", "y", "z"])
In [9]: d_find(data, ["a", "b", "c"], first_one=True)
Out[9]: 1
In [10]: d_find(data, ["a", "b", "c"], first_one=False)
Out[10]: {'a': 1, 'b': 2, 'c': 3}
In [11]:
sort() and d_sort()
def d_sort(
obj: dict,
sort_by: DictItemType=DictItem.KEY,
reverse: bool=False,
inplace: bool=False,
factory: Type[dict]=dict,
):
Create new dictiionary which is sorted by keys/values.
sort_by accept "key" and "value". default is "key".
If pass reverse=True, the list will be reversed.
If set factory, create instance of factory class.
If set True to inplace, perform operation in-place.
In [1]: from datajuggler import aDict
...: from datajuggler.dicthelper import d_sort
...:
...: data = {
...: "a": 8,
...: "c": 6,
...: "e": 4,
...: "g": 2,
...: "b": 7,
...: "d": 5,
...: "f": 3,
...: "h": 1,
...: }
In [2]: d_sort(data)
Out[2]: {'h': 1, 'g': 2, 'f': 3, 'e': 4, 'd': 5, 'c': 6, 'b': 7, 'a': 8}
In [3]: d_sort(data, reverse=True)
Out[3]: {'a': 8, 'b': 7, 'c': 6, 'd': 5, 'e': 4, 'f': 3, 'g': 2, 'h': 1}
In [4]: d_sort(data, sort_by="value")
Out[4]: {'a': 8, 'b': 7, 'c': 6, 'd': 5, 'e': 4, 'f': 3, 'g': 2, 'h': 1}
In [5]: d_sort(data, factory=aDict)
Out[5]: aDict({'h': 1, 'g': 2, 'f': 3, 'e': 4, 'd': 5, 'c': 6, 'b': 7, 'a': 8})
In [6]: d_sort(data, inplace=True)
In [7]: data
Out[7]: {'h': 1, 'g': 2, 'f': 3, 'e': 4, 'd': 5, 'c': 6, 'b': 7, 'a': 8}
In [8]:
search() and d_search()
def d_search(
obj: dict,
query: Pattern,
search_for: DictItemType=DictItem.KEY,
exact: bool=False,
ignore_case: bool=False,
use_keypath: bool=True,
):
Search and return a list of items matching the given query.
In [1]: from datajuggler.dicthelper import d_search
...:
...: data = {
...: "a": "January",
...: "b": "january!",
...: "c": {
...: "d": True,
...: "e": " january february ",
...: "f": {
...: "g": ['January', 'February', 'March', 'April' ],
...: "january": 12345,
...: "February": True,
...: },
...: },
...: "x": "Peter Piper picked a peck of pickled peppers.",
...: "y": { "x": { "y": 5, "z": 6, }, },
...: "January February": "march",
...: }
In [2]: d_search(data, "jarnuary", search_for="value")
Out[2]: {}
In [3]: d_search(data, "january", search_for="value", ignore_case=True)
Out[3]: {'a': 'January', 'b': 'january!', 'c.f.g.0': 'January'}
In [4]: d_search(data, "january", search_for="value", exact=True)
Out[4]: {}
In [5]: d_search(data, "january", search_for="value", ignore_case=True)
Out[5]:
{Keypath("a"): 'January',
Keypath("b"): 'january!',
Keypath("c.f.g[0]"): 'January'}
In [6]: d_search(data, "january", search_for="value",
...: ignore_case=True, use_keypath=False)
Out[6]: {'a': 'January', 'b': 'january!', 'c.f.g[0]': 'January'}
In [7]:
swap() and d_swap()
def d_swap(
obj: dict,
key1: Hashable,
key2: Hashable,
inplace: bool=False,
factory: Type[dict]=dict,
) ->Optional[dict]:
Swap items values at the given keys.
In [1]: from datajuggler import aDict
...: from datajuggler.dicthelper import d_swap
...:
...: data = { "a": 1, "b": 2, "c": 3, "d": None, }
In [2]: d_swap(data, "a", "b")
Out[2]: {'a': 2, 'b': 1, 'c': 3, 'd': None}
In [3]: d_swap(data, "a", "a")
Out[3]: {'a': 1, 'b': 2, 'c': 3, 'd': None}
In [4]: d_swap(data, "a", "b", factory=aDict)
Out[4]: aDict({'a': 2, 'b': 1, 'c': 3, 'd': None})
In [5]: d_swap(data, "a", "b", inplace=True)
In [6]: data
Out[6]: {'a': 2, 'b': 1, 'c': 3, 'd': None}
In [7]:
flatten() and d_flatten()
def d_flatten(
obj: dict,
separator: str=Default_Keypath_Separator,
inplace: bool=False,
factory: Type[dict]=dict,
) -> dict:
Return a new flattened dict using the given separator to join nested
In [1]: from datajuggler import aDict
...: from datajuggler.dicthelper import d_flatten, d_unflatten
...:
...: data = { "a": 1,
...: "b": 2,
...: "c": {
...: "d": {
...: "e": 3,
...: "f": 4,
...: "g": { "h": 5, },
...: }
...: },
...: }
In [2]: d_flatten(data)
Out[2]: {'a': 1, 'b': 2, 'c.d.e': 3, 'c.d.f': 4, 'c.d.g.h': 5}
In [3]: d_flatten(data, separator="_")
Out[3]: {'a': 1, 'b': 2, 'c_d_e': 3, 'c_d_f': 4, 'c_d_g_h': 5}
In [4]: d_flatten(data, factory=aDict)
Out[4]: aDict({'a': 1, 'b': 2, 'c.d.e': 3, 'c.d.f': 4, 'c.d.g.h': 5})
In [5]: d_flatten(data, inplace=True)
In [6]: data
Out[6]: {'a': 1, 'b': 2, 'c.d.e': 3, 'c.d.f': 4, 'c.d.g.h': 5}
In [7]:
unflatten() and d_unflatten()
def d_unflatten(
obj: dict,
default: Optional[Any]=None,
separator: str=Default_Keypath_Separator,
inplace: bool=False,
factory: Type[dict]=dict,
) -> dict:
Return a new unflattened dict using the given separator to join nested dict keys to flatten keypaths.
In [1]: from datajuggler import aDict
...: from datajuggler.dicthelper import d_flatten, d_unflatten
...:
...: data = {
...: "a": 1,
...: "b": 2,
...: "c.d.e": 3,
...: "c.d.f": 4,
...: "c.d.g.h": 5,
...: }
In [2]: d_unflatten(data)
Out[2]: {'a': 1, 'b': 2, 'c': {'d': {'e': 3, 'f': 4, 'g': {'h': 5}}}}
In [3]: data = {
...: "a": 1,
...: "b": 2,
...: "c_d_e": 3,
...: "c_d_f": 4,
...: "c_d_g_h": 5,
...: }
In [4]: d_unflatten(data, separator="_")
Out[4]: {'a': 1, 'b': 2, 'c': {'d': {'e': 3, 'f': 4, 'g': {'h': 5}}}}
In [5]: d_unflatten(data, separator="_", inplace=True)
In [6]: data
Out[6]: {'a': 1, 'b': 2, 'c': {'d': {'e': 3, 'f': 4, 'g': {'h': 5}}}}
In [7]:
traverse() and d_traverse()
ef d_traverse(
obj: Union[dict, list, tuple],
callback: Callable,
parents: list=[],
*args: Any,
**kwargs: Any,
):
Traverse dict or list and apply callback function. callback function will be called as follows.
callback(obj, key, value, *args, parents=parents, **kwargs)callback(obj, index, value, *args, parents=parents, **kwargs)
parantes can pass to Keylist().
- Keylist(parents)`
In [1]: from datajuggler.dicthelper import d_traverse
...:
...:
...: data = { "a": { "x": 2, "y": 3, "z": { "ok": 5, }, },
...: "b": { "x": 7, "y": 11, "z": { "ok": 13, }, },
...: "c": { "x": 17, "y": 19, "z": { "ok": 23, }, },
...: }
In [2]: def func(obj, key, val, *args, **kwargs):
...: if not isinstance(val, dict):
...: obj[key] = val + 1
...:
...: d_traverse(data, func)
In [3]: data
Out[3]:
{'a': {'x': 3, 'y': 4, 'z': {'ok': 6}},
'b': {'x': 8, 'y': 12, 'z': {'ok': 14}},
'c': {'x': 18, 'y': 20, 'z': {'ok': 24}}}
In [4]: from datajuggler import Keylists
...: paths=[]
...: def func(obj, key, val, *args, parents, **kwargs):
...: global paths
...: if not isinstance(val, dict):
...: obj[key] = val + 1
...: paths.append(Keylist(parents).to_keypath())
...:
...: d_traverse(data, func)
In [5]: data
Out[5]:
{'a': {'x': 4, 'y': 5, 'z': {'ok': 7}},
'b': {'x': 9, 'y': 13, 'z': {'ok': 15}},
'c': {'x': 19, 'y': 21, 'z': {'ok': 25}}}
In [6]: data = [ 100, [200, [300, 310], 210], 110]
...:
...: def func(obj, index, val, *args, parents, **kwargs):
...: if not isinstance(val, list):
...: obj[index] = val + 1000
...:
...: d_traverse(data, func)
In [7]: data
Out[7]: [1100, [1200, [1300, 1310], 1210], 1110]
In [8]: paths = []
...: def func(obj, index, val, parents, *args, **kwargs):
...: global paths
...: index_paths = [ str(x) for x in parents ]
...: paths.append( ' '.join(index_paths))
...:
...: d_traverse(data, func)
In [9]: data
Out[9]: [1100, [1200, [1300, 1310], 1210], 1110]
In [10]: data = [ 100, [200, [300, 310], 210], 110]
In [11]: paths = []
...: def func(obj, index, val, parents, *args, **kwargs):
...: global paths
...: index_paths = [ str(x) for x in parents ]
...: paths.append( ' '.join(index_paths))
...:
...: d_traverse(data, func)
In [12]: data
Out[12]: [100, [200, [300, 310], 210], 110]
In [13]: data = { "a": { "x": [ 100, 200], "y": 3, "z": { "ok": 5, }, },
...: "b": { "x": [ 110, 210], "y": 11, "z": { "ok": 13, }, },
...: "c": { "x": [ 120, 220], "y": 19, "z": { "ok": 13, }, },
...: }
...:
...: paths = []
...: def func(obj, key, val, parents, *args, **kwargs):
...: global paths
...: if not isinstance(val, dict) and not isinstance(val, list):
...: obj[key] = val + 1
...:
...: d_traverse(data, func)
In [14]: data
Out[14]:
{'a': {'x': [101, 201], 'y': 4, 'z': {'ok': 6}},
'b': {'x': [111, 211], 'y': 12, 'z': {'ok': 14}},
'c': {'x': [121, 221], 'y': 20, 'z': {'ok': 14}}}
In [15]: aths = []
...: def func(obj, key, val, parents, *args, **kwargs):
...: global paths
...: if not isinstance(val, dict) and not isinstance(val, list):
...: obj[key] = val + 1
...: index_paths = [ str(x) for x in parents ]
...: paths.append( ' '.join(index_paths))
...:
...: d_traverse(data, func)
In [16]: data
Out[16]:
{'a': {'x': [102, 202], 'y': 5, 'z': {'ok': 7}},
'b': {'x': [112, 212], 'y': 13, 'z': {'ok': 15}},
'c': {'x': [122, 222], 'y': 21, 'z': {'ok': 15}}}
In [17]:
unique() and d_unique()
def d_unique(
obj: dict,
) -> list:
Return unique values from dict.
In [1]: from datajuggler.dicthelper import d_unique
...:
...: data = { "a": { "x": 1, "y": 1, },
...: "b": { "x": 2, "y": 2, },
...: "c": { "x": 1, "y": 1, },
...: "d": { "x": 1, },
...: "e": { "x": 1, "y": 1, "z": 1, },
...: "f": { "x": 2, "y": 2, },
...: }
In [2]: d_unique(data)
Out[2]: [{'x': 1, 'y': 1}, {'x': 2, 'y': 2}, {'x': 1}, {'x': 1, 'y': 1, 'z': 1}]
In [3]:
get_keys()
def get_keys(
obj: Optional[dict]=None,
indexes: bool=False,
*,
output_as: Optional[DictKey]=None,
separator: str=Default_Keypath_Separator,
) -> list:
Get all keys from dictionary as a List
This function is able to process on nested dictionary.
output_as accept "keylist" and "keypath".
In [1]: from datajuggler.dicthelper import get_keys
In [2]: data = { "a": 1,
...: "b": { "c": { "x": 2, "y": 3, },
...: "d": { "x": 4, "y": 5, },
...: },
...: }
In [3]: get_keys(data)
Out[3]: ['a', 'b', 'c', 'x', 'y', 'd', 'x', 'y']
In [4]: get_keys(data, output_as="keylist")
Out[4]:
[['a'],
['b'],
['b', 'c'],
['b', 'c', 'x'],
['b', 'c', 'y'],
['b', 'd'],
['b', 'd', 'x'],
['b', 'd', 'y']]
In [5]: get_keys(data, output_as="keypath")
Out[5]: ['a', 'b', 'b.c', 'b.c.x', 'b.c.y', 'b.d', 'b.d.x', 'b.d.y']
In [6]: get_keys(data, output_as="keypath", separator='_')
Out[6]: ['a', 'b', 'b_c', 'b_c_x', 'b_c_y', 'b_d', 'b_d_x', 'b_d_y']
In [7]:
get_values()
def get_values(
obj: Union[dict, Sequence],
keys: Union[Hashable, Keylist, Keypath],
) -> Any:
Get the value of key in the objet(s).
obj : dict, dict[dict], dict[list], list[dict]
return value, list, dict.
In [1]: from datajuggler import uDict, Keypath, Keylist
...: from datajuggler.dicthelper import get_values
In [2]: data = { "a": 1,
...: "b": { "c": { "x": 2, "y": 3, },
...: "d": { "x": 4, "y": 5, },
...: "e": [ { "x": 1, "y": -1, "z": [1, 2, 3], },
...: { "x": 2, "y": -2, "z": [2, 3, 4], },
...: { "x": 3, "y": -3, "z": [3, 4, 5], },
...: ],
...: },
...: }
...:
In [3]: get_values(data, 'a')
Out[3]: 1
In [4]: get_values(data, ('b', 'c'))
Out[4]: {'x': 2, 'y': 3}
In [5]: get_values(data, Keylist(['b', 'c']))
Out[5]: {'x': 2, 'y': 3}
In [6]: get_values(data, Keylist(['b', 'e[1]', 'z[2]']))
Out[6]: 4
In [7]: get_values(data, Keypath('b.c'))
Out[7]: {'x': 2, 'y': 3}
In [8]: get_values(data, Keypath('b.e[1].z[2]'))
Out[8]: 4
In [9]: d = uDict(data)
In [10]: d['a']
Out[10]: 1
In [11]: d[('b', 'c')]
Out[11]: uDict({'x': 2, 'y': 3})
In [12]: d[Keylist(['b', 'c'])]
Out[12]: uDict({'x': 2, 'y': 3})
In [13]: d[Keylist(['b', 'e[1]', 'z[2]'])]
Out[13]: 4
In [14]: d[Keypath('b.c')]
Out[14]: uDict({'x': 2, 'y': 3})
In [15]: d[Keypath('b.e[1].z[2]')]
Out[15]: 4
In [16]:
keylists()
def keylists(
obj: Any,
indexes: bool=False,
) -> list:
keylist is the list of key as keys from dict/list.
this function is just calling Keylist.keylists()
keypaths()
def keypaths(
obj: dict,
indexes: bool=False,
separator: str=Default_Keypath_Separator,
) -> str:
Keypath is the string for attribute-sytle access to value. (dot-notation by default).
this function is just calling Keypath.keypaths()
get_items()
def get_items(
obj: dict,
loc: Hashable,
value: Any,
func: Optional[Callable]=None,
*,
separator: str=Default_Keypath_Separator,
factory: Type[dict]=dict,
):
Create new dictionary with new key value pair as d[key]=val.
If set True to inplace, perform operation in-place.
otherwise, not modify the initial dictionary.
In [1]: from datajuggler import uDict, Keypath, Keylist
...: from datajuggler.dicthelper import get_items
In [2]: get_items({}, 'a', 1)
Out[2]: {'a': 1}
In [3]: data = { 'a': 1, 'b': 2}
...: get_items(data, 'a', 3)
Out[3]: {'a': 3, 'b': 2}
In [4]: data = { 'a': 1, 'b': [{'c': 11, 'd': 12 },
...: {'c': 22, 'd': 22 }] }
...:
...: get_items(data, 'b', 2)
Out[4]: {'a': 1, 'b': 2}
In [5]: data = { 'a': 1, 'b': [{'c': 11, 'd': 12 },
...: {'c': 22, 'd': 22 }] }
...:
...: get_items(data, 'c', 4)
Out[5]: {'a': 1, 'b': [{'c': 11, 'd': 12}, {'c': 22, 'd': 22}], 'c': 4}
In [6]: data = { 'a': 1, 'b': [{'c': 11, 'd': 12 },
...: {'c': 22, 'd': 22 }] }
...:
...: get_items(data, ('b','c'), 4)
Out[6]: {'a': 1, 'b': {'c': 4}}
In [7]: data = { 'a': 1, 'b': [{'c': 11, 'd': 12 },
...: {'c': 22, 'd': 22 }] }
...:
...: get_items(data, Keylist('b','c'), 4)
Out[7]: {'a': 1, 'b': 4}
In [8]: data = { 'a': 1, 'b': [{'c': 11, 'd': 12 },
...: {'c': 22, 'd': 22 }] }
...:
...: get_items(data, Keypath('b.c'), 4)
Out[8]: {'a': 1, 'b': {'c': 4}}
In [9]: d = uDict(data)
In [10]: d
Out[10]: uDict({'a': 1, 'b': [{'c': 11, 'd': 12}, {'c': 22, 'd': 22}]})
In [11]: d.get_items('a', 3)
Out[11]: uDict({'a': 3, 'b': [{'c': 11, 'd': 12}, {'c': 22, 'd': 22}]})
In [12]: d.get_items('c', 4)
Out[12]: uDict({'a': 1, 'b': [{'c': 11, 'd': 12}, {'c': 22, 'd': 22}], 'c': 4})
In [13]: d.get_items('b', 2)
Out[13]: uDict({'a': 1, 'b': 2})
In [14]: d.get_items(('b','c'), 4)
Out[14]: uDict({'a': 1, 'b': uDict({'c': 4})})
In [15]: d.get_items(Keylist('b','c'), 4)
Out[15]: uDict({'a': 1, 'b': 4})
In [16]: d.get_items(Keypath('b.c'), 4)
Out[16]: uDict({'a': 1, 'b': uDict({'c': 4})})
In [17]:
pop_items()
ef pop_items(
obj: dict,
loc: Hashable,
value: Optional[Any]=None,
func: Optional[Callable]=None,
*,
separator: str=Default_Keypath_Separator,
factory: Type[dict]=dict,
):
Create new dictionary with new key value pair as d[key]=val.
If set True to inplace, perform operation in-place.
otherwise, not modify the initial dictionary.
del_items()
def del_items(
obj: dict,
loc: Union[Hashable, list, tuple],
*.
separator: str=Default_Keypath_Separator,
inplace: bool=False,
factory: Type[dict]=dict,
):
Create new dicttionary with the given key(s) removed.
New dictionary has d[key] deleted for each supplied key.
If set True to inplace, perform operation in-place.
otherwise, not modify the initial dictionary.
set_items()
def set_items(
obj: Union[dict, Sequence],
loc: Union[str, Sequence],
value: Any,
func: Optional[Callable]=None,
separator: str=Default_Keypath_Separator,
factory: Type[dict]=dict,
):
Create new dict with new, potentially nested, key value pair.
class iList
iList class support immutable and hashable for list.
freeze()change status of object in frozen.unfreeze()unfreeze for object.
if call freeze(), following method will raise AttiributeError.
__hash__()__radd__()__rand__()__ior__()__isub__()__setitem__()__reversed__()append()reverse()clear()expand()pop()remove()sort()
and add new helper mehtods.
copy(freeze: bool=False)clone(empty: bool=False)find(val)without(items)replace(old, new)
copy()
def copy(self, freeze: bool=False):
Creaate the new list that is copied this list.
this method could not copy self.attrs..
if pass freeze=True, return frozen list object.
In [1]: from datajuggler import iList
In [2]: l1 = iList([1,2,3])
...: l1.Hello = 'Python'
...: l2 = l1.copy()
...: assert l2 == l1
In [3]: l2.get_attrs()
Out[3]: {}
In [4]: l1 = iList([1])
...: l2 = l1.copy(freeze=True)
...: hash(l2)
Out[4]: -4714387948668998104
In [5]:
clone()
def clone(self, empty: bool=False):
Creaate the new list that is cloned this list.
this method copy self.attrs.
if pass empty=True, keep self.attrs but list will be cleared.
In [5]: l1 = iList([1,2,3])
...: l1.Hello = 'Python'
...: l2 = l1.clone()
...: assert l2 == l1
In [6]: l2.get_attrs()
Out[6]: {'Hello': 'Python'}
In [7]: l3 = l1.clone(empty=True)
In [8]: l3
Out[8]: iList([])
In [9]: l3.get_attrs()
Out[9]: {'Hello': 'Python'}
In [10]:
without()
def without(self, *items):
Create new list without items and return iterable.
In [13]: l1 = iList([1,2,3,4,5,6,7,8,9])
In [14]: l1.without([2,4,6,8])
Out[14]: [1, 3, 5, 7, 9]
In [15]: l1
Out[15]: iList([1, 2, 3, 4, 5, 6, 7, 8, 9])
In [16]:
find()
def find(self,
val: Union[Any, list, tuple],
) -> list:
Return the list of index that found val in list. otherwise return None
In [2]: l1 = iList([1,2,3,4,5,6,7,8,9])
In [3]: l1.find(2)
Out[3]: [1]
In [4]: l1.find([2,4,6,8])
Out[4]: [1, 3, 5, 7]
In [5]:
replace()
def replace(self,
old: Any,
new: Any,
func: Optional[Callable]=None,
) ->list:
Return a new list that has new instead of old. if old is not found, it will raise an ItemNotFountError. callback function will be called as follows.
func(index, old, new)
In [1]: from datajuggler import iList
In [2]: l1 = iList([1,2,3,1,2,3])
In [3]: l1.replace(3, 5)
Out[3]: [1, 2, 5, 1, 2, 5]
In [4]: def func(index, old, new):
...: if index > 3:
...: return new
...: else:
...: return old
...:
In [5]: l1 = iList([1,2,3,1,2,3])
In [6]: l1.replace(3, 5, func)
Out[6]: [1, 2, 3, 1, 2, 5]
In [7]:
class TypeValidator
TypeValidator class has following classmethods. using TypeValidator not necessary including typing module.
is_bool(cls, obj: Any)is_collection(cls, obj: Any)is_callable(cls, obj: Any)is_datetime(cls, obj: Any)is_decimal(cls, obj: Any)is_dict(cls, obj: Any)is_dict_or_other(cls, obj: Any, other: Any)is_dict_and_not_other(cls, obj: Any, other: Any)is_dict_keys(cls, obj: Any)is_dict_values(cls, obj: Any)is_dict_items(cls, obj: Any)is_dict_or_list(cls, obj: Any)is_dict_or_list_or_tuple(cls, obj: Any)is_float(cls, obj: Any)is_function(cls, obj: Any)is_hashable(cls, obj: Any)is_integer(cls, obj: Any)is_integer_or_float(cls, obj: Any)is_iterable(cls, obj: Any)is_json_serializable(cls, obj: Any)is_keylist(cls, obj: Any)is_keypath(cls, obj: Any)is_keylist_or_keypath(cls, obj: Any)is_list(cls, obj: Any)is_list_not_empty(cls, obj: Any)is_list_or_tuple(cls, obj: Any)is_list_of_keylists(cls, obj: Any)is_list_of_keypaths(cls, obj: Any)is_mapping(cls, obj: Any)is_match(cls, obj: Any)is_none(cls, obj: Any)is_not_none(cls, obj: Any)is_pattern(cls, obj: Any)is_regex(cls, obj: Any)is_same_as(cls, obj: Any, other: Any)is_sequence(cls, obj: Any)is_set(cls, obj: Any)is_set_not_empty(cls, obj: Any)is_str(cls, obj: Any)is_str_not_empty(cls, obj: Any)is_tuple(cls, obj: Any)is_tuple_not_empty(cls, obj: Any)is_uuid(cls, obj: Any)is_str_alnum(cls, obj: Any)is_str_alpha(cls, obj: Any)is_str_financial_number(cls, obj: Any)is_str_emoji(cls, obj: Any)- `is_truthy(cls, value: Any)
is_bytes(cls, obj: Any)is_bytes_not_empty(cls, obj: Any)is_made_by_pydantic(cls, obj: Any)is_made_by_dataclass(cls, obj: Any)is_made_by_namedtuple(cls, obj: Any)is_made_by_typing_namedtuple(cls, obj: Any)is_made_by_collections_namedtuple(cls, obj: Any)
Using TypeValidator class no need to include typing module compare with objects.
i.e.:
In [1]: from datajuggler.validator import TypeValidator as _type
In [2]: data = { "a": 1,
...: "b": { "c": { "x": 2, "y": 3, },
...: "d": { "x": 4, "y": 5, },
...: },
...: }
In [3]: keys = data.keys()
In [4]: keys
Out[4]: dict_keys(['a', 'b'])
In [5]: _type.is_dict_keys(keys)
Out[5]: True
In [6]:
class ValueValidator
- `is_md5(cls, value: Any):
- `is_sha1(cls, value: Any):
- `is_sha224(cls, value: Any):
- `is_sha256(cls, value: Any):
- `is_sha512(cls, value: Any):
- `is_financial_number(cls, value: Any):
- `is_valid_checkdigit(cls, value: Any, num_digits=None, weights=None):
- `is_uuid(cls, value: Any):
- `is_truthy(cls, value: Any)
- `is_length(cls, value: Any, min=None, max=None, thrown_error=False)
- `is_between(cls, value: Any, min=None, max=None, thrown_error=False)
In [1]: from datajuggler.validator import ValueValidator as _value
In [2]: import hashlib
In [3]: data = 'datajuggler'
In [4]: hash_str = hashlib.md5(data.encode()).hexdigest()
...: assert _value.is_md5(hash_str) == True
...: assert _value.is_md5(data) == False
In [5]: hash_str = hashlib.sha1(data.encode()).hexdigest()
...: assert _value.is_sha1(hash_str) == True
...: assert _value.is_sha1(data) == False
In [6]: hash_str = hashlib.sha224(data.encode()).hexdigest()
...: assert _value.is_sha224(hash_str) == True
...: assert _value.is_sha224(data) == False
In [7]: hash_str = hashlib.sha256(data.encode()).hexdigest()
...: assert _value.is_sha256(hash_str) == True
...: assert _value.is_sha256(data) == False
In [8]: hash_str = hashlib.sha512(data.encode()).hexdigest()
...: assert _value.is_sha512(hash_str) == True
...: assert _value.is_sha512(data) == False
In [9]: assert _value.is_between(10, 2, 10) == True
...: assert _value.is_between(10, 2, 20) == True
...: assert _value.is_between(10, None, 20) == True
...: assert _value.is_between(10, None, None) == False
...: assert _value.is_between(10, 1, None) == True
...: assert _value.is_between(10, -1, None) == True
...: assert _value.is_between(10, 10, None) == True
In [10]: data = 'datajuggler'
...: assert _value.is_length(data, 2, 10) == False
...: assert _value.is_length(data, 2, 11) == True
...: assert _value.is_length(data, None, 11) == True
...: assert _value.is_length(data, None, None) == False
...: assert _value.is_length(data, 1, None) == True
...: assert _value.is_length(data, -1, None) == False
...: assert _value.is_length(data, 11, None) == True
...:
In [11]: data = list([1,2,3,4,5,6,7,8,9,10,11])
...: assert _value.is_length(data, 2, 10) == False
...: assert _value.is_length(data, 2, 11) == True
...: assert _value.is_length(data, None, 11) == True
...: assert _value.is_length(data, None, None) == False
...: assert _value.is_length(data, 1, None) == True
...: assert _value.is_length(data, -1, None) == False
...: assert _value.is_length(data, 11, None) == True
In [12]: data = range(11)
...: assert _value.is_length(data, 2, 10) == False
...: assert _value.is_length(data, 2, 11) == True
...: assert _value.is_length(data, None, 11) == True
...: assert _value.is_length(data, None, None) == False
...: assert _value.is_length(data, 1, None) == True
...: assert _value.is_length(data, -1, None) == False
...: assert _value.is_length(data, 11, None) == True
In [13]: import uuis
...: data = uuid.uuid4()
...: assert _value.is_uuid(data) == True
...: assert _value.is_uuid('datajuggler') == False
In [14]: assert _value.is_financial_number('1') == True
...: assert _value.is_financial_number('12') == True
...: assert _value.is_financial_number('123') == True
...: assert _value.is_financial_number('1,234') == True
...: assert _value.is_financial_number('-1,234') == True
...: assert _value.is_financial_number('-1234') == True
...: assert _value.is_financial_number('0.12') == True
...: assert _value.is_financial_number('.12') == True
...: assert _value.is_financial_number('12.') == True
In [15]: assert _value.is_valid_checkdigit(261009) == True
...: assert _value.is_valid_checkdigit(261008) == False
...: assert _value.is_valid_checkdigit(26100, 5) == True
...: assert _value.is_valid_checkdigit(1100, 5) == True
In [16]: assert _value.is_valid_checkdigit('261009') == True
...: assert _value.is_valid_checkdigit('261008') == False
...: assert _value.is_valid_checkdigit('26100', 5) == True
...: assert _value.is_valid_checkdigit('1100', 5) == True
In [17]: assert _value.is_valid_checkdigit(261009,
...: weights=[6,5,4,3,2]) == True
...: assert _value.is_valid_checkdigit('261009',
...: weights=[6,5,4,3,2]) == True
In [18]:
class StrCase
strCase class support convert case.
convert_case(case)show_supported_case()
In [1]: from datajuggler import StrCase
In [2]: c = StrCase('The sky is the limits')
In [3]: c.show_supported_case()
Out[4]:
{'case': 'sample',
'snake': 'convert_case',
'kebab': 'convert-case',
'camel': 'convertCase',
'pascal': 'ConvertCase',
'const': 'CONVERT_CASE',
'sentence': 'Convert case',
'title': 'Convert Case',
'lower': 'convert case',
'upper': 'CONVERT CASE'}
In [4]: c.convert_case('snake')
Out[4]: 'the_sky_is_the_limits'
In [5]: c.convert_case('camel')
Out[5]: 'theSkyIsTheLimits'
StrCase class accept str, list, dict objects for inputs.
In [8]: data = "The sky is the limit"
...: expect = 'the-sky-is-the-limit'
...: s = StrCase(data)
...: assert s.convert_case('kebab') == expect
In [9]: data = "The sky is the limit"
...: expect = 'theSkyIsTheLimit'
...: s = StrCase(data)
...: assert s.convert_case(case='camel') == expect
In [10]: data = ["Good luck", "The sky is the limit" ]
...: expect = ["good_luck", "the_sky_is_the_limit"]
...: s = StrCase(data)
...: assert s.convert_case() == expect
In [11]: data = {1: "Good luck", 2: "The sky is the limit" }
...: expect = {1: "good_luck", 2: "the_sky_is_the_limit" }
...: s = StrCase(data)
...: assert s.convert_case() == expect
In [12]: data = {"Good luck": 1, "The sky is the limit": 2 }
...: expect = {"good_luck": 1, "the_sky_is_the_limit": 2 }
...: s = StrCase(data)
...: assert s.convert_case(replace_for='key') == expect
In [13]:
StrCase class support nested objects.
In [13]: data = ["Good luck", "The sky is the limit",
...: {1: "Good luck", 2: "The sky is the limit" } ]
...: expect = ["good_luck", "the_sky_is_the_limit",
...: {1: "good_luck", 2: "the_sky_is_the_limit" } ]
...: s = StrCase(data)
...: assert s.convert_case() == expect
In [14]:
split_chunks()
Return split into even chunk_size elements.
In [1]: from datajuggler import split_chunks
...:
...: data = [11,12,13,14, 21,22,23, 31,32,33]
...: expect = [[11,12,13, 14], [21,22,23,31], [32,33, None, None ]]
...: result = list(split_chunks(data,4))
...: assert result == expect
In [2]: data = [11,12,13,14, 21,22,23, 31,32,33]
...: expect = [[11,12,13, 14], [21,22,23,31], [32,33] ]
...: result = list(split_chunks(data,4, fill_na=False))
...: assert result == expect
In [3]: data = [11,12,13,14, 21,22,23,31,32,33]
...: expect = [[11,12,13, 14], [21,22,23,31], [32,33, -1, -1] ]
...: result = list(split_chunks(data,4, na_value=-1))
...: assert result == expect
In [4]:
if pass tuple as input. return list of tuple for chunk data.
In [4]: data = (11,12,13,21,22,23,31,32,33)
...: expect = [(11,12,13), (21,22,23), (31,32,33)]
...: result = list(split_chunks(data,3))
...: assert result == expect
In [5]:
if pass dict objects as input. return list of dict for chunk data.
fill_na and na_value is always ignored.
In [5]: data = { 'January': 1, 'February': 2, 'March': 3, 'April': 4 }
...: expect = [{ 'January': 1, 'February': 2, 'March': 3},
...: { 'April': 4 } ]
...: result = list(split_chunks(data,3))
...: assert result == expect
In [6]: data = { 'January': 1, 'February': 2, 'March': 3, 'April': 4 }
...: expect = [{ 'January': 1, 'February': 2, 'March': 3},
...: { 'April': 4 } ]
...: result = list(split_chunks(data,3, fill_na=True))
...: assert result == expect
In [7]: data = { 'January': 1, 'February': 2, 'March': 3, 'April': 4 }
...: expect = [{ 'January': 1, 'February': 2, 'March': 3},
...: { 'April': 4 } ]
...: result = list(split_chunks(data,3, na_value=None))
In [8]:
if pass str objects as input. return list of str for chunk data.
fill_na and na_value is always ignored.
In [8]: data = "Peter Piper picked a peck of pickled peppers."
...: expect = [ "Peter Piper picked a",
...: " peck of pickled pep",
...: "pers." ]
...: result = list(split_chunks(data,20))
...: assert result == expect
In [9]: data = "Peter Piper picked a peck of pickled peppers."
...: expect = [ "Peter Piper picked a",
...: " peck of pickled pep",
...: "pers." ]
...: result = list(split_chunks(data,20, fill_na=True, na_value=None))
...: assert result == expect
In [10]:
urange()
urange() is almost same as range()
In [1]: from datajuggler import urange
...:
...: expect = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
...: result = list(urange(10))
...: assert result == expect
In [2]: expect = [1, 2, 3, 4, 5, 6, 7, 8, 9]
...: result = list(urange(1, 10))
...: assert result == expect
In [3]: expect = [1, 3, 5, 7, 9]
...: result = list(urange(1, 10, 2))
...: assert result == expect
In [4]: expect = [10, 8, 6, 4, 2]
...: result = list(urange(10, 1, -2))
...: assert result == expect
In [5]: expect = [10, 9, 8, 7, 6, 5, 4, 3, 2]
...: result = list(urange(10, 1))
...: assert result == expect
In [6]:
urange() support callable as step.
In [6]: def gen_step(val):
...: return (val * 3)
...:
...: expect = [1, 4, 16]
...: result = list(urange(1, 20, gen_step))
...: assert result == expect
In [7]:
rename_duplicate()
Rename duplicate string for list or values of dict.
In [1]: from datajuggler import rename_duplicates
...:
...: data = ["Apple", "Apple", "Banana", "Maple" ]
...: expect = ["Apple", "Apple_01", "Banana", "Maple" ]
...: result = rename_duplicates(data)
...: assert result == expect
In [2]: data = ["Apple", "Apple", "Banana", "Maple" ]
...: expect = ["Apple", "Apple__01", "Banana", "Maple" ]
...: result = rename_duplicates(data, separator='__')
...: assert result == expect
In [3]: data = ["Apple", "Apple", "Banana", "Maple" ]
...: expect = ["Apple", "Apple_001", "Banana", "Maple" ]
...: result = rename_duplicates(data, format="{:03}")
...: assert result == expect
In [4]: data = ["Apple", ["Apple", "Apple", "Banana", "Maple" ]]
...: expect = ["Apple", ["Apple", "Apple_01", "Banana", "Maple" ]]
...: result = rename_duplicates(data)
...: assert result == expect
In [5]:
df_compare()
In [1]: from datajuggler import df_compare
...:
...: d1 = pd.DataFrame([ ['Kyoto', 35.0117,135.452],
...: ['Osaka', 34.4138,135.3808]],
...: columns=['cityName', 'latitude', 'longitude'])
...: d2 = pd.DataFrame([ ['Kyoto', 35.0117,135.452],
...: ['Osaka', 34.4138,135.3808]],
...: columns=['cityName', 'latitude', 'longitude'])
...: assert ( df_compare(d1, d2) == 0 )
In [2]: d1 = pd.DataFrame([ ['26100', 35.0117,135.452],
...: ['27100', 34.4138,135.3808]],
...: columns=['cityCode', 'latitude', 'longitude'])
...: d2 = pd.DataFrame([ ['Kyoto', 35.0117,135.452],
...: ['Osaka', 34.4138,135.3808]],
...: columns=['cityName', 'latitude', 'longitude'])
...: assert ( df_compare(d1, d2) != 0 )
In [3]:
omit_values()
Omit values from objects.
In [1]: from datajuggler import omit_values
...:
...: data = ['January', 'February', 'March', 'April' ]
...: omits = ['February', 'April']
...: expect = ['January', '', 'March', '' ]
...: result = omit_values(data, omits)
...: assert result == expect
In [2]: data = ['January', 'February', 'March', 'April' ]
...: omits = ['february', 'april']
...: expect = ['January', '', 'March', '' ]
...: result = omit_values(data, omits, ignore_case=True)
...: assert result == expect
In [3]: data = ['January', 'February', 'March', 'April' ]
...: omits = ['February', 'April']
...: expect = ['January', 'March' ]
...: result = omit_values(data, omits, drop=True)
...: assert result == expect
In [4]: data = "JanuaryFebruaryMarchApril"
...: omits = ['February', 'April']
...: expect = "JanuaryMarch"
...: result = omit_values(data, omits)
...: assert result == expect
In [5]:
replace_values()
Replace values for objects. mutltidispatch functions as follows.
-
replace_values( data: str, old, new, ignore_case)
-
replace_values( values: list, replace: dict, *, ignore_case: bool=False, inplace: bool=False, **kwargs: Any )
-
replace_values( values: dict, replace: dict, *, ignore_case: bool=False, inplace: bool=False, replace_for: ReplaceForType = ReplaceFor.VALUE ) ReplaceFor.KEY and ReplaceFor.VALUE are defined 'key' and 'value'.
-
replace_values( values: list, replace_from: list, replace_to: str, *, ignore_case: bool=False, inplace: bool=False, **kwargs: Any)
-
replace_values( values: str, replace_from: list, replace_to: Hashable, *, ignore_case: bool=False, **kwargs: Any)
-
replace_values( values: str, replace: dict, *, ignore_case: bool=False, **kwargs: Any)
In [1]: from datajuggler import replace_values
...:
...: data = "JanuaryFebruaryMarchApril"
...: old = [ 'March', 'April' ]
...: replace_to = ""
...: expect = "JanuaryFebruary"
...: result = replace_values( data, old, replace_to )
...: assert result == expect
In [2]: data = "JanuaryFebruaryMarchApril"
...: replace = { 'March': '3', 'April': '4' }
...: expect = "JanuaryFebruary34"
...: result = replace_values( data, replace )
...: assert result == expect
...:
In [3]: data = "JanuaryFebruaryMarchApril"
...: replace = { 'March': 3, 'April': 4 }
...: expect = "JanuaryFebruary34"
...: result = replace_values( data, replace )
...: assert result == expect
In [4]: data = ['January', 'February', 'March', 'April' ]
...: replace = { 'March': '3', 'April': '4' }
...: expect = ['January', 'February', '3', '4' ]
...: result = replace_values( data, replace )
...: assert result == expect
In [5]: def convert_func(matchobj):
...: map = {'January': '1',
...: 'February': '2' }
...: return map[matchobj.group(0)]
...:
...: data = ['January', 'February', 'March', 'April',
...: 'May', 'June', 'July', 'August',
...: 'September', 'October', 'November', 'December']
...:
...: replace = { '.*ary': convert_func, '.*ber': 'BER' }
...:
...: expect = ['1', '2', 'March', 'April',
...: 'May', 'June', 'July', 'August',
...: 'BER', 'BER', 'BER', 'BER']
...: result = replace_values( data, replace)
...: assert result == expect
In [6]: data = ['January', 'February', 'March', 'April']
...: replace = {'march': '3', 'april': '4' }
...:
...: expect = ['January', 'February', '3', '4' ]
...: result = replace_values( data, replace, ignore_case=True)
...: assert result == expect
In [7]: data = ['January', 'February', 'March', 'April']
...: replace = {'march': '3', 'april': '4' }
...: expect = ['January', 'February', '3', '4' ]
...: replace_values( data, replace, ignore_case=True, inplace=True)
...: assert data == expect
In [8]: data = { 1: 'January', 2: 'February', 3: 'March', 4: 'April' }
...: replace = { 'March': 3, 'April': 4 }
...: expect = { 1: 'January', 2: 'February', 3: 3, 4: 4 }
...: result = replace_values( data, replace )
...: assert result == expect
In [9]: data = { 1: 'January', 2: 'February', 3: 'March', 4: 'April' }
...: replace = { 'March': 3, 'April': 4 }
...: expect = { 1: 'January', 2: 'February', 3: 3, 4: 4 }
...: result = replace_values( data, replace, replace_for='value' )
...: assert result == expect
In [10]: data = { 1: 'January', 2: 'February', 3: 'March', 4: 'April' }
...: replace = { 'march': 3, 'april': 4 }
...: expect = { 1: 'January', 2: 'February', 3: 3, 4: 4 }
...: result = replace_values( data, replace, ignore_case=True )
...: assert result == expect
In [11]: data = { 1: 'January', 2: 'February', 3: 'March', 4: 'April' }
...: replace = { 'march': 3, 'april': 4 }
...: expect = { 1: 'January', 2: 'February', 3: 3, 4: 4 }
...: replace_values( data, replace, ignore_case=True, inplace=True )
...: assert data == expect
In [12]: data = { 1: 'one', 2: 'two', 3: 'three', 4: 'four' }
...: replace = {1: 'one', 2: 'two', 3: 'three'}
...: expect = { 'one': 'one', 'two': 'two', 'three': 'three', 4: 'four' }
...: result = replace_values( data, replace, replace_for='key')
...: assert result == expect
In [13]: data = { 1: 'one', 2: 'two', 3: 'three', 4: 'four' }
...: replace = {'one': 1, 'two': [2, 'two'], 'three': { 3: 'three'}}
...: expect = { 1: 1, 2: [2, 'two'] , 3: {3: 'three'}, 4: 'four' }
...: result = replace_values( data, replace )
...: assert result == expect
In [14]:
copy_docstring()
Copying the docstring of function onto another function by name The following is an example of a method definition in uDict.
from datajuggler.strings import copy_docstring
from datajuggler import dicthelper as d
# ...
class uDic(IODict):
# ...
@copy_docstring(d.d_counts)
def counts(self,
pattern: Union[Pattern, Hashable, Sequence],
obj: Optional[dict]=None,
*,
count_for: DictItemType=DictItem.KEY,
wild: bool=False,
verbatim: bool=False,
) ->Union[int, dict]:
"""If obj is omitted, self is used. """
obj = obj if obj or obj == {} else self
return d.d_counts(obj, pattern, count_for=count_for,
wild=wild, verbatim=verbatim)
In [3]: from datajuggler import dicthelper as d
In [4]: print(d.d_counts.__doc__)
Counts of keys or values
if pass `wild=True`, match substr and ignore_case.
if pass `verbatim=True`, counts as it is.
In [5]: from datajuggler import uDict
In [6]: print(uDict.counts.__doc__)
Counts of keys or values
if pass `wild=True`, match substr and ignore_case.
if pass `verbatim=True`, counts as it is.
If obj is omitted, self is used.
In [7]
KNOWN PROBLEMS
datajuggler is not support followings issues.
- out-of-core processing.
- multi-threaded data processing.
If you are working with huge datasets, try using datatable.
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