classVector():def__init__(self,x,y):self.x=xself.y=yclassEnvironment():# A collection of data which is relevant for more than# one class.def__init__(self):self.path=Noneself.directories={}self.pwd=None# current directoryself.cf=None# current fileself.keybuffer=''self.copy=Noneself.termsize=Vector(80,24)