Fix Python 3 support
Fix Python 3 support

paylogic/HTTPretty,Multiposting/HTTPretty,gabrielfalcao/HTTPretty,andresriancho/HTTPretty,demianbrecht/HTTPretty,xgess/HTTPretty,andresriancho/HTTPretty,xgess/HTTPretty,xgess/HTTPretty,codepython/HTTPretty,BenjamenMeyer/HTTPretty,pxg/HTTPretty,codepython/HTTPretty,paylogic/HTTPretty,demianbrecht/HTTPretty,andresriancho/HTTPretty,letolab/HTTPretty,BenjamenMeyer/HTTPretty,BenjamenMeyer/HTTPretty,Multiposting/HTTPretty,gabrielfalcao/HTTPretty,Multiposting/HTTPretty,pxg/HTTPretty,demianbrecht/HTTPretty,andresriancho/HTTPretty,pxg/HTTPretty,codepython/HTTPretty,paylogic/HTTPretty,letolab/HTTPretty,letolab/HTTPretty