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71fb0432f3
* Fix problem where Model instancess are not considered subtypes of each other due to fallback_to_any = True. Fixes #52. - Added a stub for __getstate__ to Model. - Added a stub for clean() to Model. - Correct arg type for sort_dependencies so they are covariant (Iterable rather than List). Test ignores: - Added some test ignores in cases where a model inherits from 2 different base models. - Added some test ignores for cases that MyPy flags as errors due to variable redefinitions or imports that are incompatible types. * Address review comment.
29 lines
589 B
Plaintext
29 lines
589 B
Plaintext
[CASE test_model_subtype_relationship_and_getting_and_setting_attributes]
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from django.db import models
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class A(models.Model):
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pass
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class B(models.Model):
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b_attr = 1
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pass
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class C(A):
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pass
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def service(a: A) -> int:
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pass
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a_instance = A()
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b_instance = B()
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reveal_type(b_instance.b_attr) # E: Revealed type is 'builtins.int'
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reveal_type(b_instance.non_existent_attribute) # E: Revealed type is 'Any'
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b_instance.non_existent_attribute = 2
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service(b_instance) # E: Argument 1 to "service" has incompatible type "B"; expected "A"
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c_instance = C()
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service(c_instance)
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