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19e9c38a86
If the C3 MRO algorithm fails and the old-style ancestors algorithm tells that there are unresolved ancestors, we return a single 'null' ancestor as a sign that we don't know who the ancestors really are. If there are no unresolved ancestors, then we fall back to the old-style ancestors algorithm in order to make resolve work. A future inspection for detecting incorrect MRO may warn the user about this situation.
24 lines
234 B
Python
24 lines
234 B
Python
class X(Unresolved):
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pass
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class Y(Unresolved):
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pass
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class A(X, Y):
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def foo(self):
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pass
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class B(Y, X):
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pass
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class C(A, B): # we don't know whether MRO is OK or not
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pass
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print(C.foo)
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# <ref>
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