Commits
Wes McKinney authored 286bf7c9d34
ARROW-4637: [Python] Conditionally import pandas symbols if they are used. Do not require pandas as a test dependency Warning: hold your nose for this one =) I think this can be made cleaner, but I just wanted to triage all the problems and make sure we don't introduce a hard dependency on pandas again Also resolves ARROW-4794: make pandas an optional dependency Author: Wes McKinney <wesm+git@apache.org> Closes #3893 from wesm/ARROW-4637 and squashes the following commits: 3c353b6b <Wes McKinney> do not override orc global mark in test_orc.py 59fdf8ab <Wes McKinney> Tweak pyarrow._orc import to see if it fixes MSVC 747c8937 <Wes McKinney> Address Python 2.7 unicode interaction issue with Cython 4d94b2e1 <Wes McKinney> Add benchmark from ARROW-4629 f7bf7741 <Wes McKinney> Cythonize pandas API shim for better performance 4a2549aa <Wes McKinney> Remove TF testing from travis_script_manylinux1.sh 5061c6e1 <Wes McKinney> Do not require pandas to run unit tests 385cfe55 <Wes McKinney> Finish pandas API shim; do not eagerly import pandas, add to CI 804587a0 <Wes McKinney> add import test script bb0240e2 <Wes McKinney> Begin to refactor to make references to pandas more centralized and lazy