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Reproducible Example
import pandas as pd, pyarrow as pa
pd.Series(pa.array("the quick brown fox".split()), dtype="string")
# ArrowInvalid: Needed to copy 1 chunks with 0 nulls, but zero_copy_only was True
Issue Description
The example above errors when it probably shouldn't. Here's the example + traceback:
import pandas as pd, pyarrow as pa
pd.Series(pa.array("the quick brown fox".split()), dtype="string")
# ArrowInvalid: Needed to copy 1 chunks with 0 nulls, but zero_copy_only was True
traceback
---------------------------------------------------------------------------
ArrowInvalid Traceback (most recent call last)
Cell In[1], line 3
1 import pandas as pd, pyarrow as pa
----> 3 pd.Series(pa.array("the quick brown fox".split()), dtype="string")
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pandas/core/series.py:490, in Series.__init__(self, data, index, dtype, name, copy, fastpath)
488 data = data.copy()
489 else:
--> 490 data = sanitize_array(data, index, dtype, copy)
492 manager = get_option("mode.data_manager")
493 if manager == "block":
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pandas/core/construction.py:565, in sanitize_array(data, index, dtype, copy, allow_2d)
563 _sanitize_non_ordered(data)
564 cls = dtype.construct_array_type()
--> 565 subarr = cls._from_sequence(data, dtype=dtype, copy=copy)
567 # GH#846
568 elif isinstance(data, np.ndarray):
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pandas/core/arrays/string_.py:359, in StringArray._from_sequence(cls, scalars, dtype, copy)
355 result[na_values] = libmissing.NA
357 else:
358 # convert non-na-likes to str, and nan-likes to StringDtype().na_value
--> 359 result = lib.ensure_string_array(scalars, na_value=libmissing.NA, copy=copy)
361 # Manually creating new array avoids the validation step in the __init__, so is
362 # faster. Refactor need for validation?
363 new_string_array = cls.__new__(cls)
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pandas/_libs/lib.pyx:712, in pandas._libs.lib.ensure_string_array()
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pandas/_libs/lib.pyx:754, in pandas._libs.lib.ensure_string_array()
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pyarrow/array.pxi:1475, in pyarrow.lib.Array.to_numpy()
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pyarrow/error.pxi:100, in pyarrow.lib.check_status()
ArrowInvalid: Needed to copy 1 chunks with 0 nulls, but zero_copy_only was True
This also occurs if dtype="string[pyarrow]":
pd.Series(pa.array("the quick brown fox".split()), dtype="string[pyarrow]")
# ArrowInvalid: Needed to copy 1 chunks with 0 nulls, but zero_copy_only was True
traceback
---------------------------------------------------------------------------
ArrowInvalid Traceback (most recent call last)
Cell In[2], line 3
1 import pandas as pd, pyarrow as pa
----> 3 pd.Series(pa.array("the quick brown fox".split()), dtype="string[pyarrow]")
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pandas/core/series.py:490, in Series.__init__(self, data, index, dtype, name, copy, fastpath)
488 data = data.copy()
489 else:
--> 490 data = sanitize_array(data, index, dtype, copy)
492 manager = get_option("mode.data_manager")
493 if manager == "block":
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pandas/core/construction.py:565, in sanitize_array(data, index, dtype, copy, allow_2d)
563 _sanitize_non_ordered(data)
564 cls = dtype.construct_array_type()
--> 565 subarr = cls._from_sequence(data, dtype=dtype, copy=copy)
567 # GH#846
568 elif isinstance(data, np.ndarray):
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pandas/core/arrays/string_arrow.py:149, in ArrowStringArray._from_sequence(cls, scalars, dtype, copy)
146 return cls(pa.array(result, mask=na_values, type=pa.string()))
148 # convert non-na-likes to str
--> 149 result = lib.ensure_string_array(scalars, copy=copy)
150 return cls(pa.array(result, type=pa.string(), from_pandas=True))
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pandas/_libs/lib.pyx:712, in pandas._libs.lib.ensure_string_array()
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pandas/_libs/lib.pyx:754, in pandas._libs.lib.ensure_string_array()
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pyarrow/array.pxi:1475, in pyarrow.lib.Array.to_numpy()
File ~/miniconda3/envs/pandas-2.0/lib/python3.10/site-packages/pyarrow/error.pxi:100, in pyarrow.lib.check_status()
ArrowInvalid: Needed to copy 1 chunks with 0 nulls, but zero_copy_only was True
Expected Behavior
This probably shouldn't error, and instead result in a series of the appropriate dtype.
I would note that this seems to work on 1.5.3
Installed Versions
INSTALLED VERSIONS
------------------
commit : 1a2e300170efc08cb509a0b4ff6248f8d55ae777
python : 3.10.9.final.0
python-bits : 64
OS : Darwin
OS-release : 20.6.0
Version : Darwin Kernel Version 20.6.0: Tue Jun 21 20:50:28 PDT 2022; root:xnu-7195.141.32~1/RELEASE_X86_64
machine : x86_64
processor : i386
byteorder : little
LC_ALL : None
LANG : None
LOCALE : None.UTF-8
pandas : 2.0.0rc0
numpy : 1.23.5
pytz : 2022.7.1
dateutil : 2.8.2
setuptools : 67.4.0
pip : 23.0.1
Cython : None
pytest : 7.2.1
hypothesis : None
sphinx : 6.1.3
blosc : None
feather : None
xlsxwriter : None
lxml.etree : None
html5lib : None
pymysql : None
psycopg2 : None
jinja2 : 3.1.2
IPython : 8.11.0
pandas_datareader: None
bs4 : 4.11.2
bottleneck : 1.3.7rc1
brotli : None
fastparquet : None
fsspec : 2023.1.0
gcsfs : None
matplotlib : 3.7.0
numba : 0.56.4
numexpr : 2.8.4
odfpy : None
openpyxl : 3.1.1
pandas_gbq : None
pyarrow : 11.0.0
pyreadstat : None
pyxlsb : None
s3fs : 2023.1.0
scipy : 1.10.1
snappy : None
sqlalchemy : None
tables : None
tabulate : None
xarray : None
xlrd : None
zstandard : None
tzdata : None
qtpy : None
pyqt5 : None