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class A:
def __eq__(self, other):
print("A __eq__ called")
return True
class B:
def __ne__(self, other):
print("B __ne__ called")
return True
class C:
def __eq__(self, other):
print("C __eq__ called")
return False
class D:
def __ne__(self, other):
print("D __ne__ called")
return False
a = A()
b = B()
c = C()
d = D()
def test(s):
print(s)
print(eval(s))
for x in 'abcd':
for y in 'abcd':
test('{} == {}'.format(x,y))
test('{} != {}'.format(x,y))
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