Skip to content

TST: Add regression test for to_datetime format gh-54958 #62397

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 2 commits into from
Closed

TST: Add regression test for to_datetime format gh-54958 #62397

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
0c7845b
TST: Add regression test for to_datetime format gh-54958
deepith-18 Sep 21, 2025
4d6a36c
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Sep 21, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
16 changes: 16 additions & 0 deletions pandas/tests/tslibs/test_array_to_datetime.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -298,3 +298,19 @@ def test_datetime_subclass(klass):

expected = np.array(["2000-01-01T00:00:00.000000"], dtype="M8[us]")
tm.assert_numpy_array_equal(result, expected)


import pandas as pd
from pandas import Timestamp


def test_to_datetime_format_long_string_gh54958():
"""
Test that to_datetime with a specific format doesn't fail on strings
that are longer than the format implies.
GH#54958
"""
ser = pd.Series(["2023010100"])
expected = pd.Series([Timestamp("2023-01-01")])
result = pd.to_datetime(ser, format="%Y%m%d")
tm.assert_series_equal(result, expected)
Loading