Reformat file and fix style & documentation
Reformat file and fix style & documentation

Fix all PEP8 and PEP257 violations.
(the mixed tabs/spaces was particularly evil).

danmichaelo/wm_metrics,danmichaelo/wm_metrics,danmichaelo/wm_metrics,Commonists/wm_metrics,Commonists/wm_metrics,Commonists/wm_metrics,danmichaelo/wm_metrics,Commonists/wm_metrics