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stdlib: csv.DictReader.fieldnames should be Optional[Sequence[str]] (#3752)

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Jaromir Latal
2020-02-22 04:50:02 +00:00
committed by GitHub
parent 6600dabd5c
commit daa738f70e
1 changed files with 1 additions and 1 deletions
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stdlib/2and3/csv.pyi
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@@ -55,7 +55,7 @@ class DictReader(Iterator[_DRMapping]):
reader: _reader
dialect: _DialectLike
line_num: int
fieldnames: Sequence[str]
fieldnames: Optional[Sequence[str]]
def __init__(
self,
f: Iterable[Text],