Comment 90 for bug 1368661

Reviewed: https://review.openstack.org/254276
Committed: https://git.openstack.org/cgit/openstack/swift/commit/?id=be54d0c928528cdc1b12e1bcb1614ea8859fae2e
Submitter: Jenkins
Branch: master

commit be54d0c928528cdc1b12e1bcb1614ea8859fae2e
Author: janonymous <email address hidden>
Date: Mon Dec 7 21:45:43 2015 +0530

    clear pycache and remove all pyc/pyo before starting unit test

    Delete python bytecode before every test run.
    Because python creates pyc files during tox runs, certain
    changes in the tree, like deletes of files, or switching
    branches, can create spurious errors.

    Closes-Bug: #1368661
    Change-Id: Iedcb400fa3b0417f5bb8e943b17758fcfb4070c6