On 12/07/2019 16.12, Paulo da Silva wrote:
> Hi all!
>
> Is there any difference between using the base class name or super to
> call __init__ from base class?
There is, when multiple inheritance is involved. super() can call
different 'branches' of the inheritance tree if necessary.
Let me demonstrate:
class A1:
def __init__(self):
super().__init__()
print('A1 called')
class B1(A1):
def __init__(self):
super().__init__()
print('B1 called')
class C1(A1):
def __init__(self):
super().__init__()
print('C1 called')
class D1(B1,C1):
def __init__(self):
super().__init__()
print('D1 called')
class A2:
def __init__(self):
object.__init__(self)
print('A2 called')
class B2(A2):
def __init__(self):
A2.__init__(self)
print('B2 called')
class C2(A2):
def __init__(self):
A2.__init__(self)
print('C2 called')
class D2(B2,C2):
def __init__(self):
super().__init__()
print('D2 called')
if __name__ == '__main__':
D1()
print('---')
D2()
##############
% python3 super_demo.py
A1 called
C1 called
B1 called
D1 called
---
A2 called
B2 called
D2 called
>
> class C1:
> def __init__(self):
> ...
>
> class C2(C1):
> def __init__(self):
> C1.__init__(self) or super().__init__() ??
> ...
>
> I have been using super, but I see some scripts where the base class
> name is used.
Just use super(), especially in __init__.
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