aynı yığıt kontrolü özyineli

ozyineliayniyigit.py

class Stack:
    def __init__(self):
        self.alist=[]
    def pop(self):
        return self.alist.pop()
    def push(self,a):
        self.alist.append(a)
    def show(self):
        return self.alist
    def peek(self):
        return self.alist[len(self.alist)-1]
    def isempty(self):
        return len(self.alist)==0
    def size(self):
        return len(self.alist)
def yigitaynimi(a,b):
    if a.isempty and b.isempty():
        return True
    else:
        if a.isempty() or b.isempty():
            return False
        else:
            if a.pop()!=b.pop():
                return False
            else:
                return yigitaynimi(a,b)