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[BUG] cudf implicitly converting object types to the actual types #14038

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galipremsagar opened this issue Sep 6, 2023 · 0 comments · Fixed by #14050
Closed

[BUG] cudf implicitly converting object types to the actual types #14038

galipremsagar opened this issue Sep 6, 2023 · 0 comments · Fixed by #14050
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bug Something isn't working Python Affects Python cuDF API.

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galipremsagar commented Sep 6, 2023 •
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Describe the bug
Pandas allows object dtype that can contain values of arbitrary types, cudf is converting that column to the actual type of the values in it.

Steps/Code to reproduce bug

In [1]: import pandas as pd

In [2]: s = pd.Series([1, 2, 3], dtype='object')

In [3]: import cudf

In [4]: gs = cudf.from_pandas(s)

In [5]: gs
Out[5]: 
0    1
1    2
2    3
dtype: int64

In [6]: s.dtype
Out[6]: dtype('O')

In [7]: gs.dtype
Out[7]: dtype('int64')

Expected behavior
We shouldn't be allowing this behavior as we don't have a true object dtype.

Environment overview (please complete the following information)

  • Environment location: [Bare-metal]
  • Method of cuDF install: [from source]
@galipremsagar galipremsagar added bug Something isn't working Python Affects Python cuDF API. labels Sep 6, 2023
@galipremsagar galipremsagar self-assigned this Sep 6, 2023
@galipremsagar galipremsagar mentioned this issue Sep 7, 2023
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rapids-bot bot pushed a commit that referenced this issue Sep 7, 2023
@galipremsagar
Raise MixedTypeError when a column of mixed-dtype is being construc…
6945c4f 
…ted (#14050)

Fixes #14038 

This PR introduces changes that raise an error when a column of `object` dtype is being constructed when the data is not string or bools.

Authors:
  - GALI PREM SAGAR (https://github.com/galipremsagar)

Approvers:
  - Matthew Roeschke (https://github.com/mroeschke)

URL: #14050
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Raise MixedTypeError when a column of mixed-dtype is being constructed galipremsagar/cudf
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