Python栈类实例分析

class Path: #a list used like a stack
    def __init__(self):
        self.P = []
    def push(self,t):
        self.P.append(t)
    def pop(self):
        return self.P.pop()
    def top(self):
        return self.P[-1]
    def remove(self):
        self.P.pop(0)
    def isEmpty(self):
        return (len(self.P)==0)
    def printPath(self):
        print self.P