numpy.exceptions.AxisError: axis 1 is out of bounds for array of dimension 1 · Issue #54848 · pandas-dev/pandas (original) (raw)

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Description

Reproducer:

import pandas as pd

df1 = pd.DataFrame(["a"]).convert_dtypes() df2 = pd.DataFrame([1]).convert_dtypes() pd.concat([df1, df2]) # <= numpy.exceptions.AxisError: axis 1 is out of bounds for array of dimension 1

Traceback:

Traceback (most recent call last): File "", line 1, in File "Miniconda3\envs\modin\lib\site-packages\pandas\core\reshape\concat.py", line 393, in concat return op.get_result() File "Miniconda3\envs\modin\lib\site-packages\pandas\core\reshape\concat.py", line 680, in get_result new_data = concatenate_managers( File "Miniconda3\envs\modin\lib\site-packages\pandas\core\internals\concat.py", line 180, in concatenate_managers values = concat_compat(vals, axis=1, ea_compat_axis=True) File "Miniconda3\envs\modin\lib\site-packages\pandas\core\dtypes\concat.py", line 135, in concat_compat result = np.concatenate(to_concat_arrs, axis=axis) numpy.exceptions.AxisError: axis 1 is out of bounds for array of dimension 1

pandas 2.1.0rc0