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Posted to jira@arrow.apache.org by "Henrikh Kantuni (Jira)" <ji...@apache.org> on 2021/09/23 00:48:00 UTC
[jira] [Updated] (ARROW-14087) Cannot convert DataFrame with
`numpy.dtype` cells
[ https://issues.apache.org/jira/browse/ARROW-14087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Henrikh Kantuni updated ARROW-14087:
------------------------------------
Description:
Example 1:
{code:java}
import pandas as pd
import pyarrow as pa
df1 = pd.DataFrame(["foo", "bar"])
df2 = pd.DataFrame(df1.dtypes)
t = pa.Table.from_pandas(df2)
{code}
{color:#ff0000}
{color:#172b4d}Example 2:{color}
{color}
{code:java}
df2 = pd.DataFrame([np.dtype("<i2")]
{code}
raise an {color:#ff0000}ArrowInvalid{color} exception with {color:#ff0000}Could not convert dtype...{color}
was:
{code:java}
import pandas as pd
import pyarrow as pa
df1 = pd.DataFrame(["foo", "bar"])
df2 = pd.DataFrame(df1.dtypes)
t = pa.Table.from_pandas(df2)
{code}
raises an {color:#FF0000}ArrowInvalid{color} exception with {color:#FF0000}Could not convert dtype...{color}
> Cannot convert DataFrame with `numpy.dtype` cells
> -------------------------------------------------
>
> Key: ARROW-14087
> URL: https://issues.apache.org/jira/browse/ARROW-14087
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Environment: macOS
> Python 3.8
> Reporter: Henrikh Kantuni
> Priority: Minor
> Labels: numpy
>
> Example 1:
> {code:java}
> import pandas as pd
> import pyarrow as pa
> df1 = pd.DataFrame(["foo", "bar"])
> df2 = pd.DataFrame(df1.dtypes)
> t = pa.Table.from_pandas(df2)
> {code}
> {color:#ff0000}
> {color:#172b4d}Example 2:{color}
> {color}
>
> {code:java}
> df2 = pd.DataFrame([np.dtype("<i2")]
> {code}
>
> raise an {color:#ff0000}ArrowInvalid{color} exception with {color:#ff0000}Could not convert dtype...{color}
>
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