export_to_png, get scale from kwargs to be python2 compatible
export_to_png, get scale from kwargs to be python2 compatible

rnixx/kivy,kivy/kivy,inclement/kivy,akshayaurora/kivy,kivy/kivy,matham/kivy,matham/kivy,akshayaurora/kivy,rnixx/kivy,kivy/kivy,rnixx/kivy,matham/kivy,matham/kivy,inclement/kivy,akshayaurora/kivy,inclement/kivy