Python - test whether object is a builtin function

Question

Is there a nice way to check whether object o is a builtin Python function?

I know I can use, for example

type(o) == type(pow)

beca

Answer 1

Try this:

>>> import types
>>> isinstance(pow, types.BuiltinFunctionType)
True
>>> def a():
    pass
>>> isinstance(a, types.BuiltinFunctionType)
False