cal.py

#This is a calendar
from time import strftime, sleep

USER_FIRST_NAME = "Tristan"
calendar = {}

def welcome():
    print "Welcome " + USER_FIRST_NAME + "."
    print "Calendar is opening...."
    sleep(1)
    print "Today is: " + strftime("%A %B %d, %Y")
    print "Time right now is equal to: " + strftime("%H:%M:%S")
    sleep(2)
    print"What would you like to do?"

def start_calendar():
    welcome()
    start = True
    while start:
        user_choice = raw_input("A to Add, U to Update, V to View, D to Delete, X to Exit: " )
        user_choice = user_choice.upper()
        if user_choice == "V":
            if len(calendar.keys() < 1):
                print "Calendar Empty."
            else:
                print calendar
        elif user_choice == "U":
            date = raw_input("What date?")
            update = raw_input("Enter the update: ")
            calendar[date] = update
            print "Update was succesful!"
            print calendar
            event = raw_input("Enter event: ")
            date = raw_input("Enter date (MM/DD/YYYY): ")
            if len(date) > 10 or int(date[6:]) < int(strftime("%Y")):
                print "Invalid date was entered..."
                try_again = raw_input("Try again? Y for Yes, N for No: ")
                try_again = try_again.upper()
            else:
                start = false
                calendar[date] = event
                print "Event successfully added"
                print calendar
        elif user_choice == "D":
            if len(calendar.keys() < 1):
                print "Calendar is empty"
            else:
                event = raw_input("What event?")
                for date in calendar.keys():
                    if event == calendar[date]:
                        del calendar[date]
                        print "The event was successfully deleted"
                        print calender         
        elif user_choice == "X":
            start = False
        else:
            print "Invalid command was entered"
            break


start_calendar()