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https://issues.apache.org/jira/browse/ARROW-4637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17661660#comment-17661660
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Rok Mihevc commented on ARROW-4637:
-----------------------------------
This issue has been migrated to [issue
#21172|https://github.com/apache/arrow/issues/21172] on GitHub. Please see the
[migration documentation|https://github.com/apache/arrow/issues/14542] for
further details.
> [Python] Avoid importing Pandas unless necessary
> ------------------------------------------------
>
> Key: ARROW-4637
> URL: https://issues.apache.org/jira/browse/ARROW-4637
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Python
> Affects Versions: 0.12.0
> Reporter: Antoine Pitrou
> Assignee: Wes McKinney
> Priority: Minor
> Labels: pull-request-available
> Fix For: 0.13.0
>
> Time Spent: 6h 20m
> Remaining Estimate: 0h
>
> Importing PyArrow is more than twice slower when Pandas is installed:
> {code}
> $ time python -c "import pyarrow"
> real 0m0,360s
> user 0m0,305s
> sys 0m0,037s
> $ time python -c "import sys; sys.modules['pandas'] = None; import pyarrow"
> real 0m0,144s
> user 0m0,124s
> sys 0m0,020s
> {code}
> We should only import Pandas when necessary, e.g. when asked to ingest or
> create Pandas data.
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