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stack.py

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class Stack:

def __init__(self):

self.items = []

def push(self,item):

self.items.append(item)

def isEmpty(self):

return self.items == []

def pop(self):

if self.isEmpty():

raise Empty("Stack is empty.")

return self.items.pop()

def peek(self):

'''if self.isEmpty():

raise Empty("Stack is empty.")'''

return self.items[len(self.items)-1]

def size(self):

return self.items.len()

def disp(self):

item=self.items

while item:

return item

ss=Stack()

ss.push(5)

ss.push(4)

ss.push(3)

print(ss.disp())

#print(ss.isEmpty())

'''print(ss.peek())

ss.pop()

ss.pop()

ss.pop()

print(ss.isEmpty())'''