Standard regular expression

[IlyaEp]

Hello,

I would like to use standard regular expressions along with the core functions of your library, such as building an automaton from a regular expression. How can i do this?

Thanks for pyformlang!

[Aunsiels]

Hi,

I am happy you like and use Pyformlang!

I wrote the wrapper PythonRegex: https://github.com/Aunsiels/pyformlang/blob/master/pyformlang/regular_expression/python_regex.py#L43. However, it does not contain all operations. You can access to:

• Set of characters with [] (no inverse with [^...])
• positive closure +
• . for all printable characters
• ? for optional character/group
• Shortcuts: \d, \s, \w

For example:

PythonRegex("a[a-z]")
PythonRegex(r"a[\da]")

You can also give a regular expression directly to PythonRegex.

PythonRegex(re.compile("[a-e-g-z]*"))

You can check the tests for more examples: https://github.com/Aunsiels/pyformlang/blob/master/pyformlang/regular_expression/tests/test_python_regex.py

If you require additional operations, please let me know so I can consider adding them.