def push(stack):
s=[]
print “STACK BEFORE PUSH” display(stack)
s.append(input(“Enter student rollno?”))
s.append(raw_input(“Enter student name”))
s.append(raw_input(“Enter student grade”))
stack, append(s)
def display (stack):
l=len(stack)
print “STACK CONTENTS”
for i in range(l-1,-1,-1):
print stack[i]
stack=[]
print “Creating Stack”
n = input(“Enter the number of students”)
for i in range(n): student = []
student.append(input(“Enter student rollno?”))
student.append(raw_input(“Enter student name”))
student.append(raw_input(“Enter student grade”))
stack, append(student) push(stack)
display(stack)
