[jira] [Created] (ARROW-4637) [Python] Avoid importing Pandas unless necessary

[Antoine Pitrou (JIRA)]

Antoine Pitrou created ARROW-4637:
-------------------------------------

             Summary: [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


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.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)