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PEP 604: Remove some more uses of Union/Optional (#7515)

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The following patterns still break mypy:

1. `type[]` at top level fails
2. `tuple[T1, T2]` at top level fails (but `tuple[T1, ...]` is fine)
3. `T1 | Callable[..., T2 | T3]` fails, but only <=3.9

This PR cleans up usage of `Union` and `Optional` outside these patterns.
This commit is contained in:
Jelle Zijlstra
2022-03-19 08:23:00 -07:00
committed by GitHub
parent 1acc8f3bd6
commit b7d129f727
7 changed files with 24 additions and 23 deletions
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21
stdlib/os/__init__.pyi
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@@ -32,7 +32,6 @@ from typing import (
Protocol,
Sequence,
TypeVar,
Union,
overload,
runtime_checkable,
)
@@ -832,16 +831,16 @@ def execlpe(file: StrOrBytesPath, __arg0: StrOrBytesPath, *args: Any) -> NoRetur
# Not separating out PathLike[str] and PathLike[bytes] here because it doesn't make much difference
# in practice, and doing so would explode the number of combinations in this already long union.
# All these combinations are necessary due to list being invariant.
_ExecVArgs = Union[
tuple[StrOrBytesPath, ...],
list[bytes],
list[str],
list[PathLike[Any]],
list[bytes | str],
list[bytes | PathLike[Any]],
list[str | PathLike[Any]],
list[bytes | str | PathLike[Any]],
]
_ExecVArgs = (
tuple[StrOrBytesPath, ...]
| list[bytes]
| list[str]
| list[PathLike[Any]]
| list[bytes | str]
| list[bytes | PathLike[Any]]
| list[str | PathLike[Any]]
| list[bytes | str | PathLike[Any]]
)
_ExecEnv = Mapping[bytes, bytes | str] | Mapping[str, bytes | str]
def execv(__path: StrOrBytesPath, __argv: _ExecVArgs) -> NoReturn: ...