How can I test whether a variable holds a lambda?

Question

Is there a way to test whether a variable holds a lambda? The context is I\'d like to check a type in a unit test:

self.assertEquals(lambda, type(my         


        

Answer 1

This is years past-due, but callable(mylambda) will return True for any callable function or method, lambdas included. hasattr(mylambda, '__call__') does the same thing but is much less elegant.

If you need to know if something is absolutely exclusively a lambda, then I'd use:

callable(mylambda) and mylambda.__name__ == ""

(This answer is relevant to Python2.7.5, onwards.)