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Use dt units in empty() (tz path) #893

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merged 3 commits into from
Oct 23, 2023
Merged

Use dt units in empty() (tz path) #893

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6e2e305
Use dt units in empty()
martindurant Oct 23, 2023
76d3c3d
simplfiying suggestion
martindurant Oct 23, 2023
7ccdfd5
fix
martindurant Oct 23, 2023
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10 changes: 6 additions & 4 deletions fastparquet/dataframe.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,8 @@
from pandas import (
Categorical, DataFrame, Series,
CategoricalIndex, RangeIndex, Index, MultiIndex,
DatetimeIndex, CategoricalDtype
DatetimeIndex, CategoricalDtype,
DatetimeTZDtype
)
from pandas.core.arrays.masked import BaseMaskedDtype
import warnings
Expand Down Expand Up @@ -195,9 +196,10 @@ def set_cats(values, i=i, col=col, **kwargs):

values = Categorical.from_codes(codes=code, dtype=bvalues.dtype)

elif getattr(bvalues.dtype, 'tz', None):
values = np.zeros(shape=shape, dtype='M8[ns]')
values = type(bvalues)(values, dtype=bvalues.dtype)
elif isinstance(bvalues.dtype, DatetimeTZDtype):
dt = "M8[ns]" if PANDAS_VERSION.major < 2 else f'M8[{bvalues.dtype.unit}]'
values = np.zeros(shape=shape, dtype=dt)
values = type(bvalues)._from_sequence(values, copy=False, dtype=bvalues.dtype)
else:
if not isinstance(bvalues, np.ndarray):
# e.g. DatetimeLikeBlock backed by DatetimeArray/TimedeltaArray
Expand Down
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