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Posted to issues@arrow.apache.org by "Joris Van den Bossche (Jira)" <ji...@apache.org> on 2019/12/02 10:32:00 UTC
[jira] [Updated] (ARROW-7282) [Python] let ArrowIOError subclass
from FileNotFoundError when appropriate
[ https://issues.apache.org/jira/browse/ARROW-7282?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Joris Van den Bossche updated ARROW-7282:
-----------------------------------------
Summary: [Python] let ArrowIOError subclass from FileNotFoundError when appropriate (was: [Python] IOError subclassing)
> [Python] let ArrowIOError subclass from FileNotFoundError when appropriate
> --------------------------------------------------------------------------
>
> Key: ARROW-7282
> URL: https://issues.apache.org/jira/browse/ARROW-7282
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 0.15.1
> Environment: Arch Linux, Python 3.7
> Reporter: Scott Gigante
> Priority: Minor
> Labels: exception-reporting, pyarrow
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> I get the following error when trying to open a file that does not exist.
> ```
> pyarrow.lib.ArrowIOError: Failed to open local file 'filename', error: No such file or directory
> ```
> In my opinion, this particular error should also subclass from Python FileNotFoundError. It currently only inherits from IOError (which is a superclass of FileNotFoundError).
> ```
> >>> import pyarrow
> >>> try:
> ... raise pyarrow.lib.ArrowIOError
> ... except IOError:
> ... pass
> ...
> >>> try:
> ... raise pyarrow.lib.ArrowIOError
> ... except FileNotFoundError:
> ... print('caught')
> ...
> Traceback (most recent call last):
> File "<stdin>", line 2, in <module>
> pyarrow.lib.ArrowIOError
> >>> try:
> ... raise pyarrow.lib.ArrowIOError
> ... except IOError:
> ... print('caught')
> ...
> caught
> ```
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