89 lines
1.4 KiB
Python
89 lines
1.4 KiB
Python
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#!/usr/bin/env python
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# -*- encoding: utf-8 -*-
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"""
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Topic: sample
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Desc :
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"""
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class A:
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def spam(self):
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print('A.spam')
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class B(A):
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def spam(self):
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print('B.spam')
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super().spam() # Call parent spam()
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class A1:
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def __init__(self):
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self.x = 0
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class B1(A1):
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def __init__(self):
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super().__init__()
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self.y = 1
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class Proxy():
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def __init__(self, obj):
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self._obj = obj
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# Delegate attribute lookup to internal obj
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def __getattr__(self, name):
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return getattr(self._obj, name)
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# Delegate attribute assignment
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def __setattr__(self, name, value):
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if name.startswith('_'):
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super().__setattr__(name, value) # Call original __setattr__
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else:
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setattr(self._obj, name, value)
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class Base:
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def __init__(self):
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print('Base.__init__')
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class AA(Base):
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def __init__(self):
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super().__init__()
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print('AA.__init__')
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class BB(Base):
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def __init__(self):
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super().__init__()
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print('BB.__init__')
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class CC(AA, BB):
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def __init__(self):
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super().__init__() # Only one call to super() here
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print('CC.__init__')
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CC()
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print(CC.__mro__)
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class A3:
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def spam(self):
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print('A3.spam')
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super().spam()
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class B3:
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def spam(self):
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print('B3.spam')
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class C3(A3, B3):
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pass
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print(C3.__mro__)
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C3().spam()
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