improved PEP8 spacing in function arg list
improved PEP8 spacing in function arg list

--HG--
extra : convert_revision : svn%3A3ed01bd8-26fb-0310-9e4c-ca1a4053419f/networkx/trunk%40351

beni55/networkx,ionanrozenfeld/networkx,ghdk/networkx,SanketDG/networkx,dhimmel/networkx,blublud/networkx,aureooms/networkx,dmoliveira/networkx,nathania/networkx,RMKD/networkx,harlowja/networkx,bzero/networkx,JamesClough/networkx,chrisnatali/networkx,andnovar/networkx,ghdk/networkx,jakevdp/networkx,aureooms/networkx,dhimmel/networkx,nathania/networkx,kernc/networkx,dhimmel/networkx,harlowja/networkx,farhaanbukhsh/networkx,tmilicic/networkx,jni/networkx,jakevdp/networkx,kai5263499/networkx,jtorrents/networkx,debsankha/networkx,ltiao/networkx,ionanrozenfeld/networkx,sharifulgeo/networkx,jni/networkx,michaelpacer/networkx,jcurbelo/networkx,sharifulgeo/networkx,kai5263499/networkx,debsankha/networkx,dmoliveira/networkx,sharifulgeo/networkx,Sixshaman/networkx,chrisnatali/networkx,jni/networkx,jakevdp/networkx,RMKD/networkx,debsankha/networkx,wasade/networkx,blublud/networkx,kernc/networkx,ghdk/networkx,chrisnatali/networkx,aureooms/networkx,ionanrozenfeld/networkx,goulu/networkx,bzero/networkx,farhaanbukhsh/networkx,yashu-seth/networkx,NvanAdrichem/networkx,blublud/networkx,nathania/networkx,kai5263499/networkx,bzero/networkx,cmtm/networkx,RMKD/networkx,jfinkels/networkx,harlowja/networkx,dmoliveira/networkx,OrkoHunter/networkx,kernc/networkx,jtorrents/networkx,farhaanbukhsh/networkx