Stack operation

stack = []

Stud = {'Amit': 40, 'Rajeev': 59, 'Nilam': 75, 'Sanyam': 49}

def PUSH(Student):
    for name in Student:
        if Student[name] > 50:
            stack.append(Student[name])
            print("Pushed:", Student[name])

def POP():
    if len(stack) == 0:
        print("Stack is Empty")
    else:
        print("Popped:", stack.pop())

def DISPLAY():
    if len(stack) == 0:
        print("Stack is Empty")
    else:
        print("Full Stack (Top to Bottom):")
        for i in range(len(stack) - 1, -1, -1):
            print(stack[i])

# Function Calls
PUSH(Stud)
DISPLAY()
POP()
DISPLAY()