PY3.E0240

Inconsistent-mro

Used when a class has an inconsistent method resolution order.

Noncompliant Code:

class A:
    pass
class B:
    pass
class C(A, B):
    pass

Compliant Code:

class A:
    pass
class B(A):
    pass
class C(B):  # or B, A or A but not A, B
    pass

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