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Relax DictWriter.fieldnames closer to implementation #5994

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Merged
merged 2 commits into from
Sep 2, 2021
Merged

Relax DictWriter.fieldnames closer to implementation #5994

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002ab17
Relax DictWriter.fieldnames closer to implementation
PeterJCLaw Sep 1, 2021
f8af7bc
Prefer to import collections types from collections.abc
PeterJCLaw Sep 2, 2021
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7 changes: 4 additions & 3 deletions stdlib/csv.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,8 @@ from _csv import (
unregister_dialect as unregister_dialect,
writer as writer,
)
from typing import Any, Generic, Iterable, Iterator, Mapping, Sequence, Type, TypeVar, overload
from collections.abc import Collection, Iterable, Iterator, Mapping, Sequence
from typing import Any, Generic, Type, TypeVar, overload

if sys.version_info >= (3, 8):
from typing import Dict as _DictReadMapping
Expand Down Expand Up @@ -78,14 +79,14 @@ class DictReader(Generic[_T], Iterator[_DictReadMapping[_T, str]]):
def __next__(self) -> _DictReadMapping[_T, str]: ...

class DictWriter(Generic[_T]):
fieldnames: Sequence[_T]
fieldnames: Collection[_T]
restval: Any | None
extrasaction: str
writer: _writer
def __init__(
self,
f: Any,
fieldnames: Sequence[_T],
fieldnames: Collection[_T],
restval: Any | None = ...,
extrasaction: str = ...,
dialect: _DialectLike = ...,
Expand Down