Python: check if method is static

Question

assume following class definition:

class A:
  def f(self):
    return 'this is f'

  @staticmethod
  def g():
    return 'this is g'

a = A() 

So f is a normal method and g is a static method.

Now, how can I check if the funcion objects a.f and a.g are static or not? Is there a "isstatic" funcion in Python?

I have to know this because I have lists containing many different function (method) objects, and to call them I have to know if they are expecting "self" as a parameter or not.

Answer 1

Lets experiment a bit:

>>> import types
>>> class A:
...   def f(self):
...     return 'this is f'
...   @staticmethod
...   def g():
...     return 'this is g'
...
>>> a = A()
>>> a.f
<bound method A.f of <__main__.A instance at 0x800f21320>>
>>> a.g
<function g at 0x800eb28c0>
>>> isinstance(a.g, types.FunctionType)
True
>>> isinstance(a.f, types.FunctionType)
False

So it looks like you can use types.FunctionType to distinguish static methods.