Determine if user __init__ is defined

Question

I am trying to determine if a class that I received through an argument has a user-defined function __init__ in the class that was passed. Not in the superclass.

 class HasInit(object): def __init__(self): pass class NoInit(object): pass class Base(object): def __init__(self): pass class StillNoInit(Base): pass def has_user_defined_init_in(clazz): return True if # the magic assert has_user_defined_init_in(HasInit) == True assert has_user_defined_init_in(NoInit) == False assert has_user_defined_init_in(StillNoInit) == False 

Answer 1

I think this will work:

 def has_user_defined_init_in(clazz): return "__init__" in clazz.__dict__