improved style

2 jobs for master in 1 minute and 52 seconds (queued for 1 second)
Name Stage Failure
style Style
[41] /builds/schmittu/workship_demo$ /builds/schmittu/workship_demo/.tox/flake8/bin/flake8 workship_demo tests
tests/ E211 whitespace before '('
ERROR: InvocationError for command /builds/schmittu/workship_demo/.tox/flake8/bin/flake8 workship_demo tests (exited with code 1)
flake8 finish: run-test after 0.52 seconds
flake8 start: run-test-post
flake8 finish: run-test-post after 0.00 seconds
___________________________________ summary ____________________________________
ERROR: flake8: commands failed
ERROR: Job failed: exit code 1