funcsigs is a backport of the PEP 362 function signature features from
Python 3.3's inspect module. The backport is compatible with Python 2.6, 2.7
as well as 3.2 and up.
The reference documentation is standard library documentation for the
inspect module in Python3. This documentation has been included in the
funcsigs package documentation hosted on Read The Docs.
To obtain a signature object, pass the target function to the
funcsigs.signature function.
>>> from funcsigs import signature >>> def foo(a, b=None, *args, **kwargs): ... pass >>> sig = signature(foo)
For the details of the signature object, refer to the either the package of standard library documentation.
The funcsigs backport has been tested against:
- CPython 2.6
- CPython 2.7
- CPython 3.2
- PyPy 1.9
Continuous integration testing is provided by Travis CI.
Under Python 2.x there is a compatability issue when a function is assigned to
the __wrapped__ property of a class after it has been constructed.
Similiarily there under PyPy directly passing the __call__ method of a
builtin is also a compatability issues. Otherwise the functionality is
believed to be uniform between both Python2 and Python3.
Source code for funcsigs is hosted on GitHub. Any bug reports or feature
requests can be made using GitHub's issues system. 
This is a derived work of CPython under the terms of the PSF License Agreement. The original CPython inspect module, its unit tests and documentation are the copyright of the Python Software Foundation. The derived work is distributed under the Apache License Version 2.0.