["python","arguments","python-inspect"]
How can I read a function's signature including default argument values?

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')".
import inspect def foo(a, b, x='blah'): pass print(inspect.signature(foo)) # (a, b, x='blah') Python 3.5+ recommends inspect.signature().