# Simple inheritance case
class super1 (object):
def __new__(typ, *args, **kwargs):
obj = object.__new__(typ, *args, **kwargs)
obj.attr1 = []
return obj
class derived1(super1):
def __init__(self, arg4, **kwargs):
self.attr4 = arg4
self.attr5 = kwargs['arg5']
if '__main__'==__name__:
d1 = derived1(222, arg5=333)
d1.attr1.append(111)
print d1.attr1, d1.attr4, d1.attr5,
print isinstance(d1, super1)
# Multiple inheritance case
class super2 (object):
def __new__(typ, *args, **kwargs):
obj = object.__new__(typ, *args, **kwargs)
obj.attr2 = 222
return obj
import copy
class derived2 (super1, super2):
def __new__(typ, *args, **kwargs):
objList = [sup.__new__(typ, *args, **kwargs)
for sup in derived2.__bases__]
for obj in objList[1:]:
objList[0].__dict__.update(copy.deepcopy(obj.__dict__))
objList[0].attr3 = 333
return objList[0]
def __init__(self, arg4, **kwargs):
self.attr1.append(111)
self.attr4 = arg4
self.attr5 = kwargs['arg5']
if '__main__'==__name__:
d1 = derived2(444, arg5=555)
print d1.attr1, d1.attr2, d1.attr3, d1.attr4, d1.attr5,
print isinstance(d1, super1),
print isinstance(d1, super2)
