pydicti
Installation
You can install the newest version of pydicti from PyPI:
pip install pydictiAlternatively, you can just take the file pydicti.py and redistribute it with your application.
Overview
class dicti: default case insensitive dictionary type
class odicti: ordered case insensitive dictionary type
def build_dicti: create a case insensitive dictionary class
def Dicti: create a case insensitive copy of a dictionary
dicti
Objects of type dicti are dictionaries that feature case insensitive item access:
>>> d = dicti(Hello='foo', world='bar')
>>> d['heLLO']
'foo'
>>> 'WOrld' in d
TrueInternally however, the keys retain their original case:
>>> sorted(d.keys())
['Hello', 'world']odicti
The type odicti instanciates order-preserving case insensitive dictionaries:
>>> odicti(zip('abc', range(3)))
Dicti(OrderedDict([('a', 0), ('b', 1), ('c', 2)]))build_dicti
With build_dicti you can create custom case insensitive dictionaries. This function is what is used to create the pydicti.dicti and pydicti.odicti types. Note that calling build_dicti several times with the same argument will result in identical types:
>>> build_dicti(dict) is dicti
True
>>> build_dicti(OrderedDict) is odicti
Truebuild_dicti uses subclassing to inherit the semantics of the given base dictionary type:
>>> issubclass(odicti, OrderedDict)
TrueDicti
The function Dicti is convenient for creating case insensitive copies of dictionary instances:
>>> o = OrderedDict(zip('abcdefg', range(7)))
>>> oi = Dicti(o)
>>> type(oi) is odicti
TrueJSON
The subclassing approach allows to plug your dictionary instance into places where typechecking with isinstance is used, like in the json module:
>>> import json
>>> d == json.loads(json.dumps(d), object_hook=dicti)
TrueYou can use json.loads(s, object_pairs_hook=odicti) to deserialize ordered dictionaries.
Pitfalls
The equality comparison tries preserves the semantics of the base type as well as reflexitivity. This has impact on the transitivity of the comparison operator:
>>> i = dicti(oi)
>>> roi = odicti(reversed(list(oi.items())))
>>> roi == i and i == oi
True
>>> oi != roi and roi != oi # NOT transitive!
True
>>> oi == i and i == oi # reflexive
TrueThe coercion rules in python allow this to work pretty well when performing comparisons between types that are subclasses of each other. Be careful otherwise, however.
License
Copyright © 2013 Thomas Gläßle <t_glaessle@gmx.de>
This work is free. You can redistribute it and/or modify it under the terms of the Do What The Fuck You Want To Public License, Version 2, as published by Sam Hocevar. See the COPYING file for more details.
This program is free software. It comes without any warranty, to the extent permitted by applicable law.
CHANGELOG
1.2.0
Date: 25.02.2023
fix incorrect behaviour of __or__ and __ior__, see #8
1.2.0
Date: 15.12.2022
add type hints
1.1.6
Date: 04.11.2021
update the badges on the landing page
1.1.5
Date: 04.11.2021
maintenance release for testing automatic releases using GitHub Actions
1.1.4
Date: 17.10.2020
use str.casefold() on python3
make normalization function a parameter of build_dict, so that user-defined normalization functions can be passed
1.1.3
Date: 28.06.2019
avoid key recomputation in __setitem__
1.1.2
Date: 28.06.2019
leave item order invariant under assignment in odicti (#2)
leave key case invariant under assignment
1.1.1
Date: 25.03.2019
fix deprecated MutableMapping import (error on py38)
1.1.0
Date: 19.03.2019
drop py2.6 support
fix version number in long_description
1.0.0
Date: 19.03.2019
make str representation more dict-like
misc cleanup
0.0.6
Date: 08.09.2016
fix UnicodeDecodeError in setup when UTF-8 is not the default encoding
0.0.5
Date: 18.05.2016
fix pickling on py 3.5
the ‘name’ parameter to build_dicti can now be a qualname
0.0.4
Date: 01.02.2014
add coverage reports
use more extensive unit tests
add support for pickle
0.0.3
Date: 26.01.2014
add support for python26
make dependency on OrderedDict optional
migrate to setuptools in order to use testing commands
support ordereddict.OrderedDict as fallback
0.0.2
Date: 29.12.2013
fix dicti.pop
support deepcopy(dicti)
make nosetest automatically execute the doctests
1 maintainer
Metadata
1 maintainer
Release files for pydicti 1.2.1
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| pydicti-1.2.1.tar.gz | 11.1 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| pydicti-1.2.1-py2.py3-none-any.whl | Python 3, Python 2 | none | any | Details |
Total release size: 20.0 kB
Release files / pydicti-1.2.1.tar.gz
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|---|---|
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| Tags | Python 2 Python 3 |
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