You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@arrow.apache.org by "Antoine Pitrou (JIRA)" <ji...@apache.org> on 2019/04/22 13:45:00 UTC
[jira] [Commented] (ARROW-4824) [Python] read_csv should accept
io.StringIO objects
[ https://issues.apache.org/jira/browse/ARROW-4824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16823111#comment-16823111 ]
Antoine Pitrou commented on ARROW-4824:
---------------------------------------
Actually, only binary files are accepted by the CSV reader. However, the error should be better than what you're getting :-)
> [Python] read_csv should accept io.StringIO objects
> ---------------------------------------------------
>
> Key: ARROW-4824
> URL: https://issues.apache.org/jira/browse/ARROW-4824
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Python
> Affects Versions: 0.12.1
> Reporter: Dave Hirschfeld
> Assignee: Antoine Pitrou
> Priority: Minor
> Fix For: 0.14.0
>
>
> It would be nice/convenient if `read_csv` also supported `io.StringIO` objects:
>
> {{In [59]: csv = io.StringIO('''issue_date_utc,variable_name,station_name,station_id,value_date_utc,value}}
> {{ ...: 2019-02-26 22:00:00,TEMPERATURE,ARCHERFIELD,040211,2019-02-27 03:00,29.1}}
> {{ ...: ''')}}
> {{In [60]: pd.read_csv(csv)}}
> {{Out[60]: }}
> {{ issue_date_utc variable_name ... value_date_utc value}}
> {{0 2019-02-26 22:00:00 TEMPERATURE ... 2019-02-27 03:00 29.1}}
> {{[1 rows x 6 columns]}}
> {{In [61]: pa.csv.read_csv(csv)}}
> {{Traceback (most recent call last):}}
> {{ File "<ipython-input-61-d86447415aa3>", line 1, in <module>}}
> {{ pa.csv.read_csv(csv)}}
> {{SystemError: <built-in function read_csv> returned NULL without setting an error}}
>
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)