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Closed as duplicate of#18692
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Description
Bug Report
Follow-up after #18850 discovery.
When a base TypedDict is defined in sys.version_info branches, mypy does not pick it as a proper TypedDict base.
To Reproduce
from typing import Required, TypedDict
class Base(TypedDict):
foo: int
BestBase = Base
class Child(BestBase):
baz: Required[int] # E: Required[] can be only used in a TypedDict definitionOr playground
Expected Behavior
sys.version_info is a recognized guard, so Child should be treated as regular TypedDict.
Actual Behavior
e.py:9: error: Required[] can be only used in a TypedDict definition [valid-type]
Found 1 error in 1 file (checked 1 source file)Your Environment
- Mypy version used: 1.15.0 and current master
- Mypy command-line flags: N/A
- Mypy configuration options from
mypy.ini(and other config files): N/A - Python version used: 3.12