Fix Python – How can I read a function’s signature including default argument values?

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Question

Asked By – Spì

Given a function object, how can I get its signature? For example, for:

def my_method(first, second, third='something'):
    pass

I would like to get "my_method(first, second, third='something')".

Now we will see solution for issue: How can I read a function’s signature including default argument values?

Answer

import inspect

def foo(a, b, x='blah'):
    pass

print(inspect.signature(foo))
# (a, b, x='blah')

Python 3.5+ recommends inspect.signature().

This question is answered By – unutbu

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