54 lines
1.0 KiB
Python
54 lines
1.0 KiB
Python
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# test builtin property combined with inheritance
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try:
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property
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except:
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print("SKIP")
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raise SystemExit
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# test property in a base class works for derived classes
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class A:
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@property
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def x(self):
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print('A x')
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return 123
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class B(A):
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pass
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class C(B):
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pass
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class D:
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pass
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class E(C, D):
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pass
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print(A().x)
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print(B().x)
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print(C().x)
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print(E().x)
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# test that we can add a property to base class after creation
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class F:
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pass
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F.foo = property(lambda self: print('foo get'))
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class G(F):
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pass
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F().foo
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G().foo
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# should be able to add a property to already-subclassed class because it already has one
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F.bar = property(lambda self: print('bar get'))
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F().bar
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G().bar
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# test case where class (H here) is already subclassed before adding attributes
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class H:
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pass
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class I(H):
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pass
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# should be able to add a normal member to already-subclassed class
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H.val = 2
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print(I().val)
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# should be able to add a property to the derived class
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I.baz = property(lambda self: print('baz get'))
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I().baz
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