Sing Happy Birthday

def happybirthday(person):
    """
    Sing Happy Birthday
    """
    print('Happy Birthday To You')
    time.sleep(2)
    print('Happy Birthday To You')
    time.sleep(2)
    print('Happy Birthday Dear ' + str(person[0].upper()) + str(person[1:]))
    time.sleep(2)
    print('Happy Birthday To You')