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REF: Use nonzero in place of argwhere #31853

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Merged
merged 1 commit into from
Feb 11, 2020
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REF: Use nonzero in place of argwhere #31853

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6 changes: 1 addition & 5 deletions pandas/io/stata.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1671,17 +1671,13 @@ def _do_convert_missing(self, data: DataFrame, convert_missing: bool) -> DataFra
continue

if convert_missing: # Replacement follows Stata notation
missing_loc = np.argwhere(missing._ndarray_values)
missing_loc = np.nonzero(missing._ndarray_values)[0]
umissing, umissing_loc = np.unique(series[missing], return_inverse=True)
replacement = Series(series, dtype=np.object)
for j, um in enumerate(umissing):
missing_value = StataMissingValue(um)

loc = missing_loc[umissing_loc == j]
if loc.ndim == 2 and loc.shape[1] == 1:
# GH#31813 avoid trying to set Series values with wrong
# dimension
loc = loc[:, 0]
replacement.iloc[loc] = missing_value
else: # All replacements are identical
dtype = series.dtype
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