lib/python: lazily load the extremely slow virtualenvwrapper
lib/python: lazily load the extremely slow virtualenvwrapper

arnuschky/oh-my-zsh,offbyone/oh-my-zsh,WPettersson/oh-my-zsh,offbyone/oh-my-zsh,pocketkk/oh-my-zsh,pocketkk/oh-my-zsh,arnuschky/oh-my-zsh,boliusandreas/oh-my-zsh,boliusandreas/oh-my-zsh,offbyone/oh-my-zsh,lesterchan/oh-my-zsh,boliusandreas/oh-my-zsh,WPettersson/oh-my-zsh,lesterchan/oh-my-zsh,arnuschky/oh-my-zsh,arnuschky/oh-my-zsh