Python: can a decorator determine if a function is being defined inside a class?

Question

I\'m writing a decorator, and for various annoying reasons[0] it would be expedient to check if the function it is wrapping is being defined stand-alone or as part of a class (a

Answer 1

A little late to the party here, but this has proven to be a reliable means of determining if a decorator is being used on a function defined in a class:

frames = inspect.stack()

className = None
for frame in frames[1:]:
    if frame[3] == "":
        # At module level, go no further
        break
    elif '__module__' in frame[0].f_code.co_names:
        className = frame[0].f_code.co_name
        break

The advantage of this method over the accepted answer is that it works with e.g. py2exe.