#Signature overridden wrong

class Base(object):

def ok1(self, arg1, arg2 = 2):

return arg1, arg2

def ok2(self, arg1, arg2 = 2):

return arg1, arg2

def grossly_wrong1(self, arg1, arg2):

return arg1, arg2

def grossly_wrong2(self, arg1, arg2):

return arg1, arg2

def strictly_wrong1(self, arg1, arg2 = 2):

return arg1, arg2

def strictly_wrong2(self, arg1, arg2 = 2):

return arg1, arg2

class Derived(Base):

def ok1(self, arg1, arg2 = 2):

return arg1, arg2

def ok2(self, arg1, arg2 = 2, arg3 = 3):

return arg1, arg2, arg3

def grossly_wrong1(self, arg1):

return arg1

def grossly_wrong2(self, arg1, arg2, arg3):

return arg1, arg2, arg3

def strictly_wrong1(self, arg1):

return arg1

def strictly_wrong2(self, arg1, arg2, arg3 = 3):

return arg1, arg2, arg3

#Special method signatures

class Special(object):

def __add__(self, x):

return self, x

def __pos__(self):

return self

def __str__(self):

return repr(self)

class WrongSpecials(object):

def __div__(self, x, y):

return self, x, y

def __mul__(self):

return self

def __neg__(self, other):

return self, other

def __exit__(self, arg0, arg1):

return arg0 == arg1

def __repr__():

return ""

def __add__(self, other="Unused default"):

return 4

@staticmethod

def __abs__():

return 42

class OKSpecials(object):

def __del__():

state = some_state()

def __del__(self):

use_the_state(state)

return __del__

__del__ = __del__()

__add__ = lambda x, y : do_add(x, y)

class NotOKSpecials(object):

__sub__ = lambda x : do_neg(x)

#Correctly overridden builtin method

class LoggingDict(dict):

def pop(self):

print("pop")

return dict.pop(self)

class MoreSpecialMethods:

@staticmethod

def __abs__():

return 42