本文实例讲述了Python使用字典实现的简单记事本功能。分享给大家供大家参考，具体如下：

from time import sleep, strftimeuser = "Cytus"calendar = {}def welcome(): print "Welcome to use this calendar. %s" % user print "Calendar is opening." sleep(1) print strftime("%A %B %d %Y") print strftime("%H:%M:%S") sleep(1) 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 "The calendar is empty." else: print calendar elif user_choice == "U": date = raw_input("What date? ") update = raw_input("Enter the update: ") calendar[date] = update print "Update successful." print calendar elif user_choice == "A": 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 "invaild date." try_again = raw_input("Try again? Y for yes, N for No: ") try_again = try_again.upper() if try_again == "Y": continue else: start = False else: calendar[date] = event print "Successfully added." print calendar elif user_choice == "D": if len(calendar.keys()) < 1: print "The calendar is empty." else: event = raw_input("What event? ") for date in calendar.keys(): if calendar[date] == event: del calendar[date] print "Delete successfully." print calendar else: print "incorrect event was specified." elif user_choice == "X": start = False else: print "invalid input." start = Falsestart_calendar()

运行结果：

>>>
Welcome to use this calendar. Cytus
Calendar is opening.
Thursday August 15 2019
11:25:13
What would you like to do?
A to add, U to Update, V to View, D to Delete, X to Exit: A
Enter event: www.jb51.net
Enter date (MM/DD/YYYY): 08/15/2019
Successfully added.
{'08/15/2019': 'www.jb51.net'}
A to add, U to Update, V to View, D to Delete, X to Exit: V
{'08/15/2019': 'www.jb51.net'}
A to add, U to Update, V to View, D to Delete, X to Exit:
A to add, U to Update, V to View, D to Delete, X to Exit: X
>>>

更多关于Python相关内容感兴趣的读者可查看本站专题：《Python字典操作技巧汇总》、《Python列表(list)操作技巧总结》、《Python函数使用技巧总结》、《Python数据结构与算法教程》、《Python字符串操作技巧汇总》及《Python入门与进阶经典教程》

希望本文所述对大家Python程序设计有所帮助。