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4 changes: 2 additions & 2 deletions pandas/_libs/tslibs/offsets.pyx
Original file line number Diff line number Diff line change
Expand Up @@ -4883,7 +4883,7 @@ def _warn_about_deprecated_aliases(name: str, is_period: bool) -> str:
warnings.warn(
f"\'{name}\' is deprecated and will be removed "
f"in a future version, please use "
f"\'{c_PERIOD_AND_OFFSET_DEPR_FREQSTR.get(name)}\' "
f"\'{c_PERIOD_AND_OFFSET_DEPR_FREQSTR.get(name)}\'"
f" instead.",
FutureWarning,
stacklevel=find_stack_level(),
Expand All @@ -4897,7 +4897,7 @@ def _warn_about_deprecated_aliases(name: str, is_period: bool) -> str:
warnings.warn(
f"\'{name}\' is deprecated and will be removed "
f"in a future version, please use "
f"\'{_name}\' "
f"\'{_name}\'"
f" instead.",
FutureWarning,
stacklevel=find_stack_level(),
Expand Down
6 changes: 4 additions & 2 deletions pandas/tests/arrays/test_datetimes.py
Original file line number Diff line number Diff line change
Expand Up @@ -769,8 +769,10 @@ def test_date_range_frequency_M_Q_Y_raises(self, freq):
@pytest.mark.parametrize("freq_depr", ["2MIN", "2nS", "2Us"])
def test_date_range_uppercase_frequency_deprecated(self, freq_depr):
# GH#9586, GH#54939
depr_msg = f"'{freq_depr[1:]}' is deprecated and will be removed in a "
f"future version. Please use '{freq_depr.lower()[1:]}' instead."
depr_msg = (
f"'{freq_depr[1:]}' is deprecated and will be removed in a "
f"future version, please use '{freq_depr.lower()[1:]}' instead."
)

expected = pd.date_range("1/1/2000", periods=4, freq=freq_depr.lower())
with tm.assert_produces_warning(FutureWarning, match=depr_msg):
Expand Down