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## Summary We were over-conflating the conditions for deferred name resolution. `from __future__ import annotations` defers annotations, but not class bases. In stub files, class bases are also deferred. Modeling this correctly also reduces likelihood of cycles in Python files using `from __future__ import annotations` (since deferred resolution is inherently cycle-prone). The same cycles are still possible in `.pyi` files, but much less likely, since typically there isn't anything in a `pyi` file that would cause an early return from a scope, or otherwise cause visibility constraints to persist to end of scope. Usually there is only code at module global scope and class scope, which can't have `return` statements, and `raise` or `assert` statements in a stub file would be very strange. (Technically according to the spec we'd be within our rights to just forbid a whole bunch of syntax outright in a stub file, but I kinda like minimizing unnecessary differences between the handling of Python files and stub files.) ## Test Plan Added mdtests. |
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|---|---|---|
| .. | ||
| annotated.md | ||
| any.md | ||
| callable.md | ||
| deferred.md | ||
| int_float_complex.md | ||
| invalid.md | ||
| literal.md | ||
| literal_string.md | ||
| never.md | ||
| new_types.md | ||
| optional.md | ||
| starred.md | ||
| stdlib_typing_aliases.md | ||
| string.md | ||
| union.md | ||
| unsupported_special_forms.md | ||
| unsupported_type_qualifiers.md | ||