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.

Change-Id: Ib2af15b06f75b86edd4d7f7ca37695b85b12b311
Closes-Bug: #1368661

1 files changed, 3 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 4f14419..6d19a7b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,7 +12,9 @@ setenv = VIRTUAL_ENV={envdir}
 
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-commands = python setup.py testr --slowest --testr-args='{posargs}'
+commands = find . -type f -name "*.pyc" -delete
+           python setup.py testr --slowest --testr-args='{posargs}'
+whitelist_externals = find
 
 [testenv:pep8]
 commands =