mistool 1.2.6b0

Miscellaneous missing tools that can help the py-developper.

About this package

misTool is the contraction of missing, miscellaneous and tool(s). This package contains some modules that could be useful for Python developments.

If you want more informations and examples than thereafter, just take a look at the docstrings.

I beg your pardon for my english...

English is not my native language, so be nice if you notice misunderstandings, misspellings or grammatical errors in my documents and codes.

What's new in this version 1.2.2-beta ?

¨html and ¨latex basic frames have been added to be used with term_use.withframe.

What's new in this version 1.2.1-beta ?

The function between in string_use has a new optional argument keepseps so as to keep or not the separators.

What's new in this version 1.2.0-beta ?

The module date_use has been changed to datetime_use : see the presentation above to know how to work now with dates inside misTool.

What's new in this version 1.1.1-beta ?

In the module python_use, the new class MKOrderedDict allows to define kinds of ordered dictionaries accepting several times the same key but at different "places".

Warning ! Here are some important changes.

1. In the module python_use, the class OrderedRecuDict becomes RecuOrderedDict.

2. In the module string_use, the function ascii_it becomes asciify.

The module os_use

Changing the working directory for commands

With os_use.cd, you have a context which changes temporarily the directory where launching terminal like commands. When the context is closed, the working directory goes back to the one just before the call of os_use.cd.

Let's see an example. We suppose that we have the following directory with the absolute path /Users/projetmbc/basic_dir in a Unix system.

+ basic_dir
    * latex_1.tex
    * latex_2.tex
    * python_1.py
    * python_2.py
    * python_3.py
    * python_4.py
    * text_1.txt
    * text_2.txt
    * text_3.txt
    + empty_dir
    + sub_dir
        * code_A.py
        * code_B.py
        * slide_A.pdf
        * slide_B.pdf
        + sub_sub_dir
            * doc.pdf

The following code first goes inside /Users/projetmbc/basic_dir and then it moves to /Users/projetmbc/basic_dir/sub_dir. With subprocess.call("ls"), we simply use the Unix command ls so as to list files and folders inside the current working directory.

>>> import subprocess
>>> from mistool.os_use import cd
>>> with cd("/Users/projetmbc/basic_dir"):
...     subprocess.call("ls")
empty_dir	python_1.py	python_4.py	text_2.txt
latex_1.tex	python_2.py	sub_dir		text_3.txt
latex_2.tex	python_3.py	text_1.txt
>>> with cd("/Users/projetmbc/basic_dir/sub_dir"):
...     subprocess.call("ls")
code_A.py	slide_A.pdf	sub_sub_dir
code_B.py	slide_B.pdf

Launching commands like in a terminal

The aim of the function os_use.runthis is to simplify a lot the launching of subprocesses (just use commands as you were inside your terminal). Let's consider the basic following Python script with absolute path /Users/projetmbc/script.py.

print("Everything is ok.")

To launch this program, we just have to use the single string Unix command python3 /Users/projetmbc/script.py like in the following lines. You can see that by default nothing is printed, so you have to use showoutput = True if you want to see what the script launched prints.

>>> from mistool.os_use import PPath, runthis
>>> pyfile = PPath("/Users/projetmbc/script.py")
>>> runthis(cmd = "python3 {0}".format(ppath))
>>> runthis(cmd = "python3 {0}".format(ppath), showoutput = True)
Everything is ok.

System used and environment's path

The call to os_use.system() returns the name, in lower case, of the OS used : possible strings returned can be for example "windows", "mac", "linux" and also "java".

os_use.pathenv() gives you the paths of executables known by your OS (this is indeed an alias for os.getenv('PATH')).

Enhanced version of the class pathlib.Path

The class os_use.PPath adds several methods to the useful class pathlib.Path. Here are examples.

Informations about one path

The following code shows additional informations given by the class os_use.PPath.

>>> from mistool.os_use import PPath
>>> path = PPath("dir/subdir/file.txt")
>>> path.parent
PPath('dir/subdir')
>>> print(path.depth)
2
>>> print(path.ext)
'txt'

Another useful method named is_protected works as explained below.

1. If the path does not point to an existing file or folder, an OS error is raised.

2. If the path is the one of a folder, the answer returned is True for a modifiable directory and False otherwise.

3. Finally if the path points to a file, then that is its parent folder which is tested.

There is also the method is_empty which can give three different responses.

1. If the path is the one of an empty directory, False is returned.

2. True is returned when the path corresponds to an non-empty folder.

3. If the path doesn't point to an existing directory an OS error is raised.

Changing one path

Changing or adding an extension is very easy with the method with_ext.

>>> from mistool.os_use import PPath
>>> path_no_ext = PPath("dir/subdir")
>>> path_no_ext.with_ext("ext")
PPath('dir/subdir.ext')
>>> path_ext = PPath("dir/subdir/file.txt")
>>> path_ext.with_ext("ext")
PPath('dir/subdir/file.ext')

Obtaining a short version or a normalized one of a path needs no effort. Here is how to do that (~ is a shortcut for the main OS user's folder).

>>> from mistool.os_use import PPath
>>> path_too_long = PPath("~/dir_1/dir_2/dir_3/../../file.txt")
>>> path_too_long.normpath
PPath('/Users/projetmbc/dir_1/file.txt')
>>> path_long = PPath("/Users/projetmbc/dir_1/dir_2/dir_3/../../file.txt")
>>> path_long.shortpath
PPath('~/dir_1/file.txt')

Comparing paths

The "common" folder of several paths is obtained by using the method common_with or equivalently the magic operator &.

>>> from mistool.os_use import PPath
>>> path        = PPath("/Users/projetmbc/source/doc")
>>> path_1      = PPath("/Users/projetmbc/README")
>>> path_2      = PPath("/Users/projetmbc/source/misTool/os_use.py")
>>> path_danger = PPath("/NoUser/projects")
>>> path.common_with(path_1)           # Same as ``path & path_1``
PPath('/Users/projetmbc')
>>> path.common_with(path_2)           # Same as ``path & path_2``
PPath('/Users/projetmbc/source')
>>> path.common_with(path_danger)      # No error raised !
PPath('/')
>>> path.common_with(path_1, path_2)   # Same as ``path & path_1 & path_2``
PPath('/Users/projetmbc')
>>> path.common_with([path_1, path_2]) # Same as ``path & [path_1, path_2]``
PPath('/Users/projetmbc')

The class os_use.PPath adds a magic method so as to use path - anotherpath instead of path.relative_to(anotherpath) where the method relative_to is implemented by the class pathlib.Path.

>>> from mistool.os_use import PPath
>>> main    = PPath("/Users/projetmbc")
>>> path_1  = PPath("/Users/projetmbc/README")
>>> path_2  = PPath("/Users/projetmbc/source/misTool/os_use.py")
>>> path_1 - main
PPath('README')
>>> path_2 - main
PPath('source/misTool/os_use.py')
>>> path_2 - path_1
Traceback (most recent call last):
[...]
ValueError: '/Users/projetmbc/source/misTool/os_use.py' does not start with '/Users/projetmbc/README'

If you need to know the depth of one path relatively to another, just call the method depth_in.

>>> from mistool.os_use import PPath
>>> main    = PPath("/Users/projetmbc")
>>> path_1  = PPath("/Users/projetmbc/README")
>>> path_2  = PPath("/Users/projetmbc/source/misTool/os_use.py")
>>> path_pb = PPath("/NoUser/projects")
>>> print(path_1.depth_in(main))
0
>>> print(path_2.depth_in(main))
2
>>> print(path_pb.depth_in(main))
Traceback (most recent call last):
[...]
ValueError: '/NoUser/projects' does not start with '/Users/projetmbc'

The special concept of "regpath"

A "regpath" is a query mixing all the power of regexes and the Unix-glob special characters (there are also some additional query features). We will use some "regpaths" in the incoming examples.

See the docstring of the method regpath2meta for complete informations about the "regpaths".

Walk and see

The method see tries to open the current path with a possible associated application. For example, an HTML file will be opened by your default browser.

You can walk very easily inside a directory thanks to the method walk and the "regpaths" (see the previous section). For example, let's suppose that we have the following directory with absolute path /Users/projetmbc/basic_dir in a Unix system.

+ basic_dir
    * latex_1.tex
    * latex_2.tex
    * python_1.py
    * python_2.py
    * python_3.py
    * python_4.py
    * text_1.txt
    * text_2.txt
    * text_3.txt
    + empty_dir
    + sub_dir
        * code_A.py
        * code_B.py
        * slide_A.pdf
        * slide_B.pdf
        + sub_sub_dir
            * doc.pdf

Here are easy to understand examples where the regpath "*" is for a non-recursive search contrary to the regpath "**".

>>> from mistool.os_use import PPath
>>> folder = PPath("/Users/projetmbc/basic_dir")
>>> for p in folder.walk("dir::**"):
...     print("+", p)
...
+ /Users/projetmbc/basic_dir/empty_dir
+ /Users/projetmbc/basic_dir/sub_dir
+ /Users/projetmbc/basic_dir/sub_dir/sub_sub_dir
>>> for p in folder.walk("file::**.py"):
...     print("+", p)
...
+ /Users/projetmbc/basic_dir/python_1.py
+ /Users/projetmbc/basic_dir/python_2.py
+ /Users/projetmbc/basic_dir/python_3.py
+ /Users/projetmbc/basic_dir/python_4.py
+ /Users/projetmbc/basic_dir/sub_dir/code_A.py
+ /Users/projetmbc/basic_dir/sub_dir/code_B.py
>>> for p in folder.walk("file::*.py"):
...     print("+", p)
...
+ /Users/projetmbc/basic_dir/python_1.py
+ /Users/projetmbc/basic_dir/python_2.py
+ /Users/projetmbc/basic_dir/python_3.py
+ /Users/projetmbc/basic_dir/python_4.py

Create

Creating files and folders is straight forward with the method create even if this needs to add several parent directories that don't yet exist. In the following example, we suppose that the current directory has absolute path /Users/projetmbc, and doesn't contain any subfolder.

>>> from mistool.os_use import PPath
>>> path_1 = PPath("test/README")
>>> path_1.is_file()
False
>>> path_1.create("file")
>>> path_1.is_file()
True
>>> path_2 = PPath("test/README")
>>> path_2.create("dir")
Traceback (most recent call last):
[...]
ValueError: path points to an existing file.

Remove

If you want to destroy a whole directory, or simply a file, given by its PPath, just use the method remove.

Warning ! Because removing a file or a directory can be a dangerous thing, you can use the method can_be_removed which by default will raise an OS error if the PPath is one of an existing file or folder.

The method clean allows to remove specific files and/or directories matching a regpath given as an argument.

Move & copy

By default, the method copy_to allows you to copy a file or a directory into another location, whereas the method move_to will move a file or a directory to another place.

The module string_use

Multi-replacements

The class string_use.MultiReplace makes possible to do multi-replacements recursively or not (by default mode = "norecu").

>>> from mistool.string_use import MultiReplace
>>> from mistool.config.pattern import PATTERNS_WORDS
>>> oldnew = {
...     'W1': "Word #1",
...     'W2': "Word #2",
...     'W3': "W1 and W2"
... }
>>> mreplace = MultiReplace(
...     oldnew  = oldnew,
...     mode    = "recu",
...     pattern = PATTERNS_WORDS['var']
... )
>>> print(mreplace("W1 and W2 = W3"))
Word #1 and Word #2 = Word #1 and Word #2
>>> mreplace.mode = "norecu"  
>>> mreplace.build()
>>> print(mreplace("W1 and W2 = W3"))
Word #1 and Word #2 = W1 and W2

The code above show that cyclic definitions will raise a ValueError exception.

>>> from mistool.string_use import MultiReplace
>>> from mistool.config.pattern import PATTERNS_WORDS
>>> oldnew = {
...     'WRONG_1': "one small text and  WRONG_2",
...     'WRONG_2': "one small text, and then WRONG_3",
...     'WRONG_3': "with WRONG_1, there is one problem here"
... }
>>> mreplace = MultiReplace(
...     oldnew  = oldnew,
...     mode    = "recu",
...     pattern = PATTERNS_WORDS["var"]
... )
Traceback (most recent call last):
[...]
ValueError: the following viscious circle has been found.
	 + WRONG_2 --> WRONG_3 --> WRONG_1 --> WRONG_2

Multi-splits

The aim of the class string_use.MultiSplit is to split a text on several semantic depths. Here is an example of use.

>>> from mistool.string_use import MultiSplit
>>> msplit = MultiSplit(seps = "|")
>>> print(msplit("p_1 ; p_2 ; p_3 | r_1 ; r_2 | s"))
[
    'p_1 ; p_2 ; p_3 ',
    ' r_1 ; r_2 ',
	' s'
]
>>> msplit.seps  = ["|", ";"]
>>> msplit.strip = True
>>> print(msplit("p_1 ; p_2 ; p_3 | r_1 ; r_2 | s"))
[
    ['p_1', 'p_2', 'p_3'],
    ['r_1', 'r_2'],
    ['s']
]

Before, between and after

The function string_use.between looks for two separators such as to return the text before, between and after the first matching of this separators. By default, separators are not kept but you can ask to the function to keep them. None is returned if no matching has been found. Just take a look at a concrete example.

>>> from mistool.string_use import between
>>> text = "f(x ; y) = x**2 + y**2"
>>> seps = ["(", ")"]
>>> print(between(text, seps))
[
    'f',                # Before
    'x ; y',            # Between
    ' = x**2 + y**2'    # After
]
>>> print(between(text, seps, True))
[
    'f(',                # Before
    'x ; y',             # Between
    ') = x**2 + y**2'    # After
]
>>> seps = ["{", "}"]
>>> print(between(text, seps))
None

Join with a last special text

You can join several strings with a special final separator as the examples above show.

>>> from mistool.string_use import joinand
>>> texts = ["1", "2", "3"]
>>> print(joinand(texts))
1, 2 and 3
>>> print(joinand(texts = texts, andtext = "et"))
1, 2 et 3
>>> print(joinand(texts = texts, sep = " + ", andtext = "="))
1 + 2 = 3

Playing with cases of letters

The function string_use.case gives more auto-formatting of strings (the last formatting looks strange but it is useful for an incoming project of the author of mistool).

>>> from mistool.string_use import case
>>> text = "onE eXamPLe"
>>> for kind in ['lower', 'upper', 'sentence', 'title']:
...     print("{0}  [{1}]".format(case(text, kind), kind))
...
one example   [lower]
ONE EXAMPLE   [upper]
One example   [sentence]
One Example   [title]

A camel case string can be "uncamelized" by the function string_use.camelto. Here is how to use it (you can change the separator by using the optional argument sep which is "_" by default).

>>> from mistool.string_use import camelto
>>> text = "OneSmallExampLE"
>>> for kind in ['lower', 'upper', 'sentence', 'title']:
...     print("{0}  [{1}]".format(camelto(text, kind), kind))
...
one_small_examp_l_e   [lower]
ONE_SMALL_EXAMP_L_E   [upper]
One_small_examp_l_e   [sentence]
One_Small_Examp_L_E   [title]

If you need to check the case of a string, just use string_use.iscase(text, kind).

Playing with ASCII

You can check if a string is a pure ASCII one.

>>> from mistool.string_use import isascii
>>> print(isascii("Vive la France !"))
True
>>> print(isascii("¡Viva España!"))
False

You can also transform a string to a pure ASCII one (this will not always work but in case of failure you can contribute very easily to enhance string_use.asciify).

>>> from mistool.string_use import asciify
>>> print(asciify("¡Viva España!"))
Viva Espana!
>>> oldnew = {'!': ""}
>>> print(asciify(text = "¡Viva España!", oldnew = oldnew))
Viva Espana

The last example above shows how to be permissive : this means that string_use.asciify will "asciify" the most characters as possible.

>>> from mistool.string_use import asciify
>>> print(asciify(text = "L'Odyssée de ∏", strict = False))
L'Odyssee de ∏
>>> print(asciify("L'Odyssée de ∏"))
Traceback (most recent call last):
[...]
ValueError: ASCII conversion can't be made because of the character << ∏ >>.
You can use the function ``_ascii_report`` so as to report more precisely
this fealure with eventually an ascii alternative.

Auto completion

The class string_use.AutoComplete gives the auto-completion feature accessible without using any GUI package.

>>> from mistool.string_use import AutoComplete
>>> myac = AutoComplete(
...     words = [
...         "article", "artist", "art",
...         "when", "who", "whendy",
...         "bar", "barbie", "barber", "bar"
...     ]
... )
>>> print(myac.matching("art"))
['article', 'artist']
>>> print(myac.matching(""))
[
    'art', 'article', 'artist',
    'bar', 'barber', 'barbie',
    'when', 'whendy', 'who'
]
>>> print(myac.missing("art", 'article'))
icle

It is a convention in GUI applications to give auto-completion only for at least three characters. You can do that by using the optional argument minsize which is 1 by default.

The module term_use

Auto-numbering steps

For terminal informations, it can be useful to number some important printed steps. This can be done easily with the class term_use.Step.

>>> from mistool.term_use import Step
>>> mysteps = Step()
>>> i = 0
>>> while i <= 12:
...     if i % 2:
...         mysteps("Action #{0}".format(i))
...     i += 1
...
1) Action #1
2) Action #3
3) Action #5
4) Action #7
5) Action #9
6) Action #11

The class term_use.Step has two optional arguments.

1. start gives the first number which is 1 by default.

2. textit is a function of two variables (n, t) returning the text containing the step number n and the text t. By default, textit = lambda n, t: "{0}) {1}".format(n, t).

Frame

The function term_use.withframe puts a text inside an ASCII frame (you can choose the alignment and use other kinds of frames if necessary as it is explained in the docstrings).

>>> from mistool.term_use import withframe
>>> text = '''
... One small
... text
... to do tests
... '''.strip()
>>> print(withframe(text))
###############
# One small   #
# text        #
# to do tests #
###############

ASCII tree views of one directory

For our examples, we consider a folder with the following structure and the absolute path /Users/projetmbc/dir.

+ dir
    * code_1.py
    * code_2.py
    * file_1.txt
    * file_2.txt
    + doc
        * code_A.py
        * code_B.py
        * slide_A.pdf
        * slide_B.pdf
        + licence
            * doc.pdf
    + emptydir

The preceding ASCII tree view was built easily using the following code (PPath is the class defined in os_use added in term_use for you comfort).

>>> from mistool.term_use import DirView, PPath
>>> dir     = PPath("/Users/projetmbc/dir")
>>> dirview = DirView(
...     ppath   = dir,
...     sorting = "filefirst"
... )
>>> print(dirview.ascii)
+ dir
    * code_1.py
    * code_2.py
    * file_1.txt
    * file_2.txt
    + doc
        * code_A.py
        * code_B.py
        * slide_A.pdf
        * slide_B.pdf
        + licence
            * doc.pdf
    + emptydir

Using the "regpath" concept of the module os_use, we can filter folders and files shown as in the example above (we also use the argument display so as to customize the output).

>>> from mistool.term_use import DirView, PPath
>>> dir     = PPath("/Users/projetmbc/dir")
>>> dirview = DirView(
...     ppath   = dir,
...     regpath = "file::**.py",
...     display = "main short found"
... )
>>> print(dirview.ascii)
+ dir
    * code_1.py
    * code_2.py
    + doc
        * code_A.py
        * code_B.py

You can also use the following property methods.

1. dirview.tree is a graphical tree.

2. dirview.toc gives a minimal tabulated tree.

3. dirview.latex is for the LaTeX package dirtree.

The module python_use

A multikeys dictionary

The class MKOrderedDict allows to work easily with multikeys ordered dictionaries. Here is a complete example of use.

>>> from mistool.python_use import MKOrderedDict
>>> onemkdict = MKOrderedDict()
>>> onemkdict[(1, 2, 4)] = "1st value"
>>> onemkdict["key"] = "2nd value"
>>> onemkdict["key"] = "3rd value"
>>> print(onemkdict)
MKOrderedDict([
    ((id=0, key=(1, 2, 4)), value='1st value'),
    ((id=0, key='key')    , value='2nd value'),
    ((id=1, key='key')    , value='3rd value')
])
>>> for k_id, val in onemkdict["key"]:
...     print(k_id, val)
...
0 2nd value
1 3rd value
>>> print(onemkdict.getitembyid(1, "key"))
3rd value
>>> for (k_id, key), val in onemkdict.items():
...     print((k_id, key), "===>", val)
...
(0, (1, 2, 4)) ===> 1st value
(0, 'key') ===> 2nd value
(1, 'key') ===> 3rd value
>>> for key, val in onemkdict.items(noid=True):
...     print(key, "===>", val)
...
(1, 2, 4) ===> 1st value
key ===> 2nd value
key ===> 3rd value
>>> "key" in onemkdict
True
>>> "kaaaay" in onemkdict
False
>>> onemkdict.setitembyid(0, "key", "New 2nd value")
>>> print(onemkdict)
MKOrderedDict([
    ((id=0, key=(1, 2, 4)), value='1st value'),
    ((id=0, key='key')    , value='New 2nd value'),
    ((id=1, key='key')    , value='3rd value')])

A dictionary defined recursively

The class RecuOrderedDict allows to use a list of hashable keys, or just a single hashable key. Here is a complete example of use.

>>> from mistool.python_use import RecuOrderedDict
>>> onerecudict = RecuOrderedDict()
>>> onerecudict[[1, 2, 4]] = "1st value"
>>> onerecudict[(1, 2, 4)] = "2nd value"
>>> onerecudict["key"] = "3rd value"
>>> print(onerecudict)
RecuOrderedDict([
    (
        1,
        RecuOrderedDict([
            (
                2,
                RecuOrderedDict([ (4, '1st value') ])
            )
        ])
    ),
    (
        (1, 2, 4),
        '2nd value'
    ),
    (
        'key',
        '3rd value'
    )
])
>>> [1, 2, 4] in onerecudict
True
>>> [2, 4] in onerecudict[1]
True

List of single values of a dictionary

If you need to list all the value of one dictionary, the function python_use.dictvalues is made for you.

>>> from mistool.python_use import dictvalues
>>> onedict = {"a": 1, "b": 2, "c": 1}
>>> print(dictvalues(onedict))
[1, 2]
>>> print(list(onedict.values()))
[2, 1, 1]

Easy quoted text with the least escaped quote symbols

With python_use.quote you can add without pain quotes around a text.

>>> from mistool.python_use import quote
>>> print(quote('First example.'))
'First example.'
>>> print(quote("Same example."))
'Same example.'
>>> print(quote('One "small" example.'))
'One "small" example.'
>>> print(quote("Another kind of \"example\"."))
'Another kind of "example".'
>>> print(quote("An example a 'little' more \"problematic\"."))
'An example a \'little\' more "problematic".'

The module datetime_use

Special class ddatetime

The class ddatetime is an enhanced version of the class datetime.datetime : see the two sections below. It is very easy to build an instance of ddatetime thanks to the very cool function build_ddatetime. The examples above show different ways to define a date.

>>> from mistool.datetime_use import build_ddatetime
>>> build_ddatetime((2017, 8, 1))
ddatetime(2017, 8, 1, 0, 0)
>>> build_ddatetime(2017, 8, 1)
ddatetime(2017, 8, 1, 0, 0)
>>> build_ddatetime("2017-08-01")
ddatetime(2017, 8, 1, 0, 0)
>>> build_ddatetime("Friday 01 august 2017")
ddatetime(2017, 8, 1, 0, 0)
>>> build_ddatetime("Vendredi 1er août 2017", lang = "fr_FR")
ddatetime(2017, 8, 1, 0, 0)
>>> build_ddatetime("Vendredi 1er août 2017")
[...]
ValueError: Unknown string format
>>> build_ddatetime("Vendredi 1er août 2017", "fr_FR")
[...]
TypeError: an integer is required (got type str)

Note that you must define a special language using lang = "fr_FR" as you can see in the two last commands in the preceding example.

Next day having a fixed english name

In some applications you want to know the next monday after a fixing date.

>>> from mistool.datetime_use import ddatetime
>>> onedate = ddatetime(2017,8, 1)
>>> print(onedate.strftime("%Y-%m-%d is a %A."))
2017-08-01 is a Tuesday.
>>> nextfriday = onedate.nextday(name = "friday")
>>> print("Next Friday:", nextfriday.strftime("%Y-%m-%d"))
Next Friday: 2017-08-04

Translating a date

Thanks to the class ddatetime, it is easy to safely translate all the names in a date.

>>> from mistool.datetime_use import ddatetime
>>> onedate   = ddatetime(2015, 6, 2)
>>> oneformat = "%A %d %B %Y"
>>> print(onedate.translate(strformat = oneformat))
Tuesday 02 June 2015
>>> print(onedate.translate(strformat = oneformat, lang = "fr_FR"))
Mardi 02 juin 2015

Parsing a string to build a date

The function parsedate is an international version of the function dateutil.parser.parse (translations need external contributions : the job is very easy to do !).

>>> from mistool.datetime_use import parsedate
>>> parsedate("Friday 01 august 2017")
ddatetime(2017, 8, 1, 0, 0)
>>> parsedate(timestr = "Vendredi 1er Août 2017", lang = "fr_FR")
ddatetime(2017, 8, 1, 0, 0)
>>> parsedate(timestr = "Montag, 11. April 2016", lang = "de_DE")
[...]
ValueError: unsupported language ''de_DE''

The module url_use

Looking for dead or bad urls

For the following example, we suppose that we have a working internet connection.

>>> from mistool.url_use import islinked
>>> islinked("http://www.google.com")
True
>>> islinked("http://www.g-o-o-g-l-e.com")
False

Escaping special characters in urls

It is safe to not use non-ASCII characters in a url. Here is one way to do that.

>>> from mistool.url_use import escape
>>> print(escape("http://www.vivaespaña.com/camión/"))
http://www.vivaespa%C3%B1a.com/cami%C3%B3n/

The module latex_use

Escaping the special LaTeX characters

The function latex_use.escape will escape all special characters for you regarding the text or math mode.

>>> from mistool.latex_use import escape
>>> onetext = "\OH/ & ..."
>>> print(escape(onetext))
\textbackslash{}OH/ \& ...
>>> print(escape(text = onetext, mode = "math"))
\backslash{}OH/ \& ...

Easy LaTeX compilation(s)

The class latex_use.Build compiles a LaTeX file for you (for the moment only the PDF compilation is implemented). Let's consider the following LaTeX file with the absolute path /Users/projetmbc/latex/file.tex.

\documentclass[11pt, oneside]{article}

\begin{document}

\section{One little test}

One basic formula : $E = mc^2$.

\end{document}

In the following code, we call to the class term_use.DirView so as to show the new files made by LaTeX (the ellipsis [...] indicates some lines not reproduced here).

>>> from mistool.latex_use import Build, PPath
>>> from mistool.term_use import DirView
>>> latexdir = PPath("/Users/projetmbc/latex/file.tex")
>>> print(DirView(latexdir.parent).ascii)
+ latex
    * file.tex
>>> builder   = Build(latexdir)
>>> builder.pdf()
# -- Start of compilation Nb.1 -- #

This is pdfTeX, Version 3.14159265-2.6-1.40.15 (TeX Live 2014) (preloaded
format=pdflatex)
 restricted \write18 enabled.
entering extended mode

[...]

Output written on file.pdf (1 page, 36666 bytes).
Transcript written on file.log.

# -- End of compilation Nb.1 -- #
>>> print(DirView(latexdir.parent).ascii)
+ latex
    * file.aux
    * file.log
    * file.pdf
    * file.tex

The PDF file has been build by LaTeX but there are also temporary ones. If you need several compilations, so as to build a table of content for example, just use the attribut-argument repeat, and if you don't want to see the LaTeX ouput, just set the attribut-argument showinfos to False.

Removing the temporary files produced by LaTeX

We keep the same LaTeX example file. The function latex_use.clean cleans all unuseful temporary files when the compilation has been done.

>>> from mistool.latex_use import clean, PPath
>>> from mistool.term_use import DirView
>>> latexdir = PPath("/Users/projetmbc/latex")
>>> print(DirView(latexdir.parent).ascii)
+ latex
    * file.aux
    * file.log
    * file.pdf
    * file.synctex.gz
    * file.tex
>>> clean(ppath = latexdir, showinfos = True)
* Cleaning for "/Users/projetmbc/latex/file.tex"
>>> print(DirView(latexdir.parent).ascii)
+ latex
    * file.pdf
    * file.tex

Automatic installation of personal LaTeX packages

Let's suppose that we have package named lyxam stored in a folder having the absolute path /Users/projetmbc/latex/lyxam and whose structure is the following one.

+ lyxam
    + change_log
        + 2012
            * 02.txt
            * 03.txt
            * 04.txt
            * 10.txt
        * todo.txt
    * lyxam.sty
    + config
        * settings.tex
        + lang
            * en.tex
            * fr.tex
            + special
                * fr.config
            + standard
                * en.config
                * fr.config
        + style
            * apmep.tex
            * default.tex

To install this package locally in your LaTeX distribution, just do like in the code above.

>>> from mistool.latex_use import install, PPath
>>> package = PPath("/Users/projetmbc/latex/lyxam")
>>> install(package)
Starting installation of the package locally.
    * Deletion of the old << lyxam >> package in the local LaTeX directory.
    * Creation of a new << lyxam >> package in the local LaTeX directory.
        + Adding the new file << lyxam.sty >>
        + Adding the new file << change_log/todo.txt >>
        + Adding the new file << change_log/2012/02.txt >>
        + Adding the new file << change_log/2012/03.txt >>
        + Adding the new file << change_log/2012/04.txt >>
        + Adding the new file << change_log/2012/10.txt >>
        + Adding the new file << config/settings.tex >>
        + Adding the new file << config/lang/en.tex >>
        + Adding the new file << config/lang/fr.tex >>
        + Adding the new file << config/lang/special/fr.config >>
        + Adding the new file << config/lang/standard/en.config >>
        + Adding the new file << config/lang/standard/fr.config >>
        + Adding the new file << config/style/apmep.tex >>
        + Adding the new file << config/style/default.tex >>
    * Refreshing the list of LaTeX packages.

Using the concept of "regpath" of the module os_use, you can for example choose to not install all the TXT files.

>>> from mistool.latex_use import install, PPath
>>> package = PPath("/Users/projetmbc/latex/lyxam")
>>> install(ppath = package, regpath = "file not::**.txt")
Starting installation of the package locally.
    * Deletion of the old << lyxam >> package in the local LaTeX directory.
    * Creation of a new << lyxam >> package in the local LaTeX directory.
        + Adding the new file << lyxam.sty >>
        + Adding the new file << config/settings.tex >>
        + Adding the new file << config/lang/en.tex >>
        + Adding the new file << config/lang/fr.tex >>
        + Adding the new file << config/lang/special/fr.config >>
        + Adding the new file << config/lang/standard/en.config >>
        + Adding the new file << config/lang/standard/fr.config >>
        + Adding the new file << config/style/apmep.tex >>
        + Adding the new file << config/style/default.tex >>
    * Refreshing the list of LaTeX packages.

Remove a personal LaTeX packages

Just use remove(name) where name is the name of a local LaTeX package.