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f350a268a7
This makes the default behavior (without specifying `globalns` manually) more predictable for users, finds the right globalns automatically. Implementation for classes assumes has a `__module__` attribute and that module is present in `sys.modules`. It does this recursively for all bases in the MRO. For modules, the implementation just uses their `__dict__` directly. This is backwards compatible, will just raise fewer exceptions in naive user code. Originally implemented and reviewed at https://github.com/python/typing/pull/470.
53 lines
1.1 KiB
Python
53 lines
1.1 KiB
Python
"""Module for testing the behavior of generics across different modules."""
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import sys
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from textwrap import dedent
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from typing import TypeVar, Generic, Optional
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if sys.version_info[:2] >= (3, 6):
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exec(dedent("""
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default_a: Optional['A'] = None
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default_b: Optional['B'] = None
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T = TypeVar('T')
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class A(Generic[T]):
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some_b: 'B'
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class B(Generic[T]):
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class A(Generic[T]):
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pass
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my_inner_a1: 'B.A'
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my_inner_a2: A
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my_outer_a: 'A' # unless somebody calls get_type_hints with localns=B.__dict__
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"""))
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else: # This should stay in sync with the syntax above.
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__annotations__ = dict(
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default_a=Optional['A'],
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default_b=Optional['B'],
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)
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default_a = None
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default_b = None
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T = TypeVar('T')
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class A(Generic[T]):
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__annotations__ = dict(
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some_b='B'
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)
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class B(Generic[T]):
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class A(Generic[T]):
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pass
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__annotations__ = dict(
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my_inner_a1='B.A',
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my_inner_a2=A,
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my_outer_a='A' # unless somebody calls get_type_hints with localns=B.__dict__
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)
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