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Incorrect reading of CSV containing large integers Issue#52505 #54679

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Merged
merged 4 commits into from
Aug 24, 2023
Merged

Incorrect reading of CSV containing large integers Issue#52505 #54679

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a7d8838
mend
kvn4 Aug 21, 2023
4429c6a
mmend
kvn4 Aug 23, 2023
6f23751
mmend
kvn4 Aug 23, 2023
e2d51c4
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kvn4 Aug 24, 2023
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7 changes: 6 additions & 1 deletion pandas/io/parsers/arrow_parser_wrapper.py
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Expand Up @@ -223,5 +223,10 @@ def read(self) -> DataFrame:
elif using_pyarrow_string_dtype():
frame = table.to_pandas(types_mapper=arrow_string_types_mapper())
else:
frame = table.to_pandas()
if self.kwds.get("dtype") is not None and issubclass(
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Can you use isinstance instead of issubclass?

type(self.kwds.get("dtype")), dict
):
frame = table.to_pandas(types_mapper=self.kwds["dtype"].get)
else:
frame = table.to_pandas()
return self._finalize_pandas_output(frame)