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Fix #849: Update converters type in read_excel for better Pyright compatibility #1297

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Merged
merged 8 commits into from
Sep 19, 2025
+18 −6
Merged

Fix #849: Update converters type in read_excel for better Pyright compatibility #1297

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a0614f3
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Sachi-Parashar Jul 28, 2025
ae5365d
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Sachi-Parashar Jul 28, 2025
2c1b5df
Delete tests/test_excel_converters.py
Sachi-Parashar Jul 29, 2025
288c04d
Move converter test to test_io.py
Sachi-Parashar Jul 29, 2025
19d18ce
Used ensure_clean()
Sachi-Parashar Aug 7, 2025
9f07189
Update test_io.py black formatting
loicdiridollou Sep 19, 2025
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Update test_io.py
loicdiridollou Sep 19, 2025
5128059
Update test_io.py
loicdiridollou Sep 19, 2025
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12 changes: 6 additions & 6 deletions pandas-stubs/io/excel/_base.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -54,7 +54,7 @@ def read_excel(
usecols: str | UsecolsArgType = ...,
dtype: str | Dtype | Mapping[str, str | Dtype] | None = ...,
engine: ExcelReadEngine | None = ...,
converters: Mapping[int | str, Callable[[object], object]] | None = ...,
converters: Mapping[int | str, Callable[[Any], Any]] | None = ...,
true_values: Iterable[Hashable] | None = ...,
false_values: Iterable[Hashable] | None = ...,
skiprows: int | Sequence[int] | Callable[[object], bool] | None = ...,
Expand Down Expand Up @@ -97,7 +97,7 @@ def read_excel(
usecols: str | UsecolsArgType = ...,
dtype: str | Dtype | Mapping[str, str | Dtype] | None = ...,
engine: ExcelReadEngine | None = ...,
converters: Mapping[int | str, Callable[[object], object]] | None = ...,
converters: Mapping[int | str, Callable[[Any], Any]] | None = ...,
true_values: Iterable[Hashable] | None = ...,
false_values: Iterable[Hashable] | None = ...,
skiprows: int | Sequence[int] | Callable[[object], bool] | None = ...,
Expand Down Expand Up @@ -141,7 +141,7 @@ def read_excel( # type: ignore[overload-cannot-match]
usecols: str | UsecolsArgType = ...,
dtype: str | Dtype | Mapping[str, str | Dtype] | None = ...,
engine: ExcelReadEngine | None = ...,
converters: Mapping[int | str, Callable[[object], object]] | None = ...,
converters: Mapping[int | str, Callable[[Any], Any]] | None = ...,
true_values: Iterable[Hashable] | None = ...,
false_values: Iterable[Hashable] | None = ...,
skiprows: int | Sequence[int] | Callable[[object], bool] | None = ...,
Expand Down Expand Up @@ -184,7 +184,7 @@ def read_excel(
usecols: str | UsecolsArgType = ...,
dtype: str | Dtype | Mapping[str, str | Dtype] | None = ...,
engine: ExcelReadEngine | None = ...,
converters: Mapping[int | str, Callable[[object], object]] | None = ...,
converters: Mapping[int | str, Callable[[Any], Any]] | None = ...,
true_values: Iterable[Hashable] | None = ...,
false_values: Iterable[Hashable] | None = ...,
skiprows: int | Sequence[int] | Callable[[object], bool] | None = ...,
Expand Down Expand Up @@ -264,7 +264,7 @@ class ExcelFile:
names: ListLikeHashable | None = ...,
index_col: int | Sequence[int] | None = ...,
usecols: str | UsecolsArgType = ...,
converters: dict[int | str, Callable[[object], object]] | None = ...,
converters: dict[int | str, Callable[[Any], Any]] | None = ...,
true_values: Iterable[Hashable] | None = ...,
false_values: Iterable[Hashable] | None = ...,
skiprows: int | Sequence[int] | Callable[[object], bool] | None = ...,
Expand Down Expand Up @@ -292,7 +292,7 @@ class ExcelFile:
names: ListLikeHashable | None = ...,
index_col: int | Sequence[int] | None = ...,
usecols: str | UsecolsArgType = ...,
converters: dict[int | str, Callable[[object], object]] | None = ...,
converters: dict[int | str, Callable[[Any], Any]] | None = ...,
true_values: Iterable[Hashable] | None = ...,
false_values: Iterable[Hashable] | None = ...,
skiprows: int | Sequence[int] | Callable[[object], bool] | None = ...,
Expand Down
9 changes: 9 additions & 0 deletions tests/test_excel_converters.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,9 @@
from functools import partial
import pandas as pd
from typing_extensions import assert_type

partial_func = partial(pd.to_datetime, errors="coerce")

df = pd.read_excel("foo.xlsx", converters={"field_1": partial_func})

assert_type(df, pd.DataFrame)