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ENH: Improve error mesage verbosity in string accessor #59900

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Merged
merged 8 commits into from
Oct 28, 2024
Merged

ENH: Improve error mesage verbosity in string accessor #59900

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99b1c3d
sync to master
KevsterAmp Sep 7, 2024
55e6e47
Merge remote-tracking branch 'upstream/main'
KevsterAmp Sep 7, 2024
912293a
Merge remote-tracking branch 'upstream/main'
KevsterAmp Sep 26, 2024
9107624
improve error verbosity
KevsterAmp Sep 26, 2024
9ef9fe8
Merge remote-tracking branch 'upstream/main' into verbose-error-msg
KevsterAmp Oct 22, 2024
c6cb4b9
remove "!" on the error message
KevsterAmp Oct 22, 2024
a616b29
match exact error message on test
KevsterAmp Oct 24, 2024
d482efe
Merge remote-tracking branch 'upstream/main' into verbose-error-msg
KevsterAmp Oct 28, 2024
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4 changes: 3 additions & 1 deletion pandas/core/strings/accessor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -255,7 +255,9 @@ def _validate(data):
inferred_dtype = lib.infer_dtype(values, skipna=True)

if inferred_dtype not in allowed_types:
raise AttributeError("Can only use .str accessor with string values!")
raise AttributeError(
f"Can only use .str accessor with string values, not {inferred_dtype}"
)
return inferred_dtype

def __getitem__(self, key):
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3 changes: 2 additions & 1 deletion pandas/tests/series/accessors/test_str_accessor.py
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Expand Up @@ -15,7 +15,8 @@ def test_str_attribute(self):

# str accessor only valid with string values
ser = Series(range(5))
with pytest.raises(AttributeError, match="only use .str accessor"):
msg = "Can only use .str accessor with string values, not integer"
with pytest.raises(AttributeError, match=msg):
ser.str.repeat(2)

def test_str_accessor_updates_on_inplace(self):
Expand Down