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BUG: fix BooleanArray.astype('string') (GH34110) #34509

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Jun 1, 2020
Merged

BUG: fix BooleanArray.astype('string') (GH34110) #34509

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4 changes: 4 additions & 0 deletions pandas/core/arrays/boolean.py
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Original file line number Diff line number Diff line change
Expand Up @@ -370,11 +370,15 @@ def astype(self, dtype, copy: bool = True) -> ArrayLike:
if incompatible type with an BooleanDtype, equivalent of same_kind
casting
"""
from pandas.core.arrays.string_ import StringDtype

dtype = pandas_dtype(dtype)

if isinstance(dtype, BooleanDtype):
values, mask = coerce_to_array(self, copy=copy)
return BooleanArray(values, mask, copy=False)
elif isinstance(dtype, StringDtype):
return dtype.construct_array_type()._from_sequence(self, copy=False)

if is_bool_dtype(dtype):
# astype_nansafe converts np.nan to True
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