Detect definition path of a decorated function

Question

Are there any ways to obtain a path of a file corresponding to a function object which is passed to a decorator function?

Finally I need a directory of the file.

def mydec(arg):
    def dec_inner(func):
        def wrapper(*args, **kwargs):
            # how to detect a path where func is defined?
        return wrapper
     return dec_inner

@jonrsharpe No. I mean something similar to result of os.path.realpath(). — sergzach, Sep 03 '14 at 16:08
Well once you have the module name, you can find the module path - see e.g. http://stackoverflow.com/q/247770/3001761 - `sys.modules[func.__module__].__file__`, for example. — jonrsharpe, Sep 03 '14 at 16:09

score 3 · Accepted Answer · answered Sep 03 '14 at 16:14

You can find the name of the module a function comes from using the __module__ attribute:

>>> from random import choice
>>> choice.__module__
'random'

You can get the module from its name via the sys.modules dictionary:

>>> sys.modules['random']
<module 'random' from 'C:\Python27\lib\random.pyc'>

And the file path itself from the module attribute __file__. Putting all of that together:

>>> sys.modules[choice.__module__].__file__
'C:\\Python27\\lib\\random.pyc'

Detect definition path of a decorated function

1 Answers1