用于python中,某些图形的显示。Note:TheseVisualStudiopackagesdonotalterthePATHvariableoraccesstheregistryatall.Ifyouwishtousethecommand-lineinterfacetoGraphvizorareusingsomeotherprogramthatcallsaGraphvizprogram,youwillneedtosetthePATHvariableyourself.