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feat(python,rust): add date pattern dd.mm.YYYY #16045

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May 5, 2024
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feat(python,rust): add date pattern dd.mm.YYYY #16045

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1 change: 1 addition & 0 deletions crates/polars-time/src/chunkedarray/string/patterns.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
//! parsing different orders of dates in a single column.

pub(super) static DATE_D_M_Y: &[&str] = &[
"%d.%m.%Y", // 31.12.2021
"%d-%m-%Y", // 31-12-2021
"%d/%m/%Y", // 31/12/2021
];
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20 changes: 20 additions & 0 deletions py-polars/tests/unit/namespaces/test_strptime.py
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Expand Up @@ -132,6 +132,26 @@ def test_to_date_non_exact_strptime() -> None:
s.str.to_date(format, strict=True, exact=True)


@pytest.mark.parametrize(
("time_string", "expected"),
[
("01-02-2024", date(2024, 2, 1)),
("01.02.2024", date(2024, 2, 1)),
("01/02/2024", date(2024, 2, 1)),
("2024-02-01", date(2024, 2, 1)),
("2024/02/01", date(2024, 2, 1)),
("31-12-2024", date(2024, 12, 31)),
("31.12.2024", date(2024, 12, 31)),
("31/12/2024", date(2024, 12, 31)),
("2024-12-31", date(2024, 12, 31)),
("2024/12/31", date(2024, 12, 31)),
],
)
def test_to_date_all_inferred_date_patterns(time_string: str, expected: date) -> None:
result = pl.Series([time_string]).str.to_date()
assert result[0] == expected


@pytest.mark.parametrize(
("value", "attr"),
[
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