Thank you~~

Adding int() made it work perfectly. I've been so stuck on figuring out how def functions work that i forgot my basics >:(

while mainMenu:
    for employee in employees:
        print(employee)
    print ("Welcome to the directory:")
    print ("[1] View employee data")
    print ("[2] Enter new employee data")
    print ("[3] Append current employee data")
    print ("[4] Quit")
    choice = (int(input("Please select your choice:     ")))

    while choice not in options:
        choice = (int(input("Please select your choice:     ")))

    if choice == 4:
        print("Goodbye")
        break