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Error Indexing DafaFrame with a 0-d array

See original GitHub issue

>>> df = pd.DataFrame([[1, 2], [3, 4]], columns=['a', 'b'])
>>> ar = np.array(0)
>>> df.iloc[ar]
Traceback (most recent call last):
  ...
  ...
  File "/home/float2/Documents/Python/Pandas/pandas/pandas/core/indexes/base.py", line 529, in _shallow_copy_with_infer
    if not len(values) and 'dtype' not in kwargs:
TypeError: object of type 'numpy.int64' has no len()

A 0-d array passes this check cause it is an Iterable. But later, when len() is called on, TypeError is raised. It would be nice to implement PEP 357 to prevent this error. The matter has been raised at PyTorch project. #9237

Issue Analytics

State:
Created 5 years ago
Reactions:1
Comments:29 (26 by maintainers)

Top GitHub Comments

1reaction

jrebackcommented, Jan 29, 2019

@tamuhey issues are closed when the corresponding PR is actually merged

0reactions

jrebackcommented, Mar 24, 2019

this is a duplicate of #24919 and closed by #24924

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