python -day8
2022/2/7 17:13:18
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2、字典:
增删改查
a={1:'a',2:'b',3:'c'}
b={4:'d'}
1)增:a.update(b)
a >>>{1:'a',2:'b',3:'c',4:'d'}
2)删:a.pop(3)
a >>>{1:'a',2:'b'}
3)改:a[3]='aaa'
a >>>{1:'a',2:'b',3:'aaa'}
4)清空 a.clear()
a >>>{}
task1 编写一段车站订票程序,要求实现:查询车次表,查询已订票信息,订票,退票及改签等功能
train_time_list = [ { "车次": "D4605", "始发站": "北京", "到达站": "长春", "出发时间": "02:56", "到达时间": "09:16", "历时": "06:20" }, { "车次": "D29", "始发站": "北京", "到达站": "长春西", "出发时间": "06:34", "到达时间": "13:13", "历时": "06:39" }, { "车次": "D21", "始发站": "北京", "到达站": "长春", "出发时间": "06:39", "到达时间": "13:05", "历时": "07:26" }, { "车次": "D25", "始发站": "北京", "到达站": "长春西", "出发时间": "10:28", "到达时间": "17:26", "历时": "06:58" }, { "车次": "D101", "始发站": "北京", "到达站": "长春西", "出发时间": "13:52", "到达时间": "20:27", "历时": "06:35" }, { "车次": "D19", "始发站": "北京", "到达站": "长春", "出发时间": "14:18", "到达时间": "20:45", "历时": "06:27" }, { "车次": "D73", "始发站": "北京", "到达站": "长春", "出发时间": "14:28", "到达时间": "20:51", "历时": "06:23" }, { "车次": "D23", "始发站": "北京", "到达站": "长春西", "出发时间": "15:33", "到达时间": "22:10", "历时": "06:37" }, { "车次": "D4609", "始发站": "北京", "到达站": "长春西", "出发时间": "23:52", "到达时间": "07:04", "历时": "07:12" } ] # 申明用户购票信息 user_ticket ={} name = input('请输入您的姓名来登录系统') # 系统提示语 print('尊敬的用户您好,欢迎登录订票系统,请输入您想办理的业务:') while True: user_do= input('查询列车时刻表请按0;查询已订票业务请按1;订票请按2,退票请按3,改签请按4,退出请按*') # 查询列车时刻表 if user_do == '0': print("%-10s%-10s%-10s%-10s%-10s%-10s" % ("车次", "始发站", "到达站", "出发时间", "到达时间", "历时")) for i in range(len(train_time_list)): print("%-10s%-10s%-10s%-10s%-10s%-10s" % (train_time_list[i].get("车次"),train_time_list[i].get("始发站"),train_time_list[i].get("到达站"),train_time_list[i].get("出发时间"),train_time_list[i].get("到达时间"),train_time_list[i].get("历时"))) # 查询已订票情况 if user_do =='1': if user_ticket !={}: print('您好,这边查询到您订的车票信息:姓名{}的车次号为{},始发站为{},到达站为{},出发时间为{},到达时间为{},历时{}'.format( user_ticket.get("姓名"), user_ticket.get("车次"), user_ticket.get("始发站"), user_ticket.get("到达站"), user_ticket.get("出发时间"), user_ticket.get("到达时间"), user_ticket.get("历时"))) else: print('抱歉,没有查询到您的购票信息') # 订票流程 if user_do =='2': #name = input('请输入您的姓名') user_book_ticket =[] # 检查车次号是否在列表内 while True: user_tran_no = input('请选择车次号') for i in range(len(train_time_list)): user_book_ticket.append(train_time_list[i].get('车次')) if user_tran_no not in user_book_ticket: print('此车号不存在,请重新输入') else: # 遍历列车表找到车次号所在 for m in range(len(train_time_list)): if train_time_list[m].get('车次') == user_tran_no: user_ticket['姓名']= name user_ticket['车次'] = train_time_list[m].get('车次') user_ticket['始发站'] = train_time_list[m].get('始发站') user_ticket['到达站'] = train_time_list[m].get('到达站') user_ticket['出发时间'] = train_time_list[m].get('出发时间') user_ticket['到达时间'] = train_time_list[m].get('到达时间') user_ticket['历时'] = train_time_list[m].get('历时') print('您好,您订的车票信息:姓名{}的车次号为{},始发站为{},到达站为{},出发时间为{},到达时间为{},历时{}'.format( user_ticket.get("姓名"), user_ticket.get("车次"), user_ticket.get("始发站"), user_ticket.get("到达站"), user_ticket.get("出发时间"), user_ticket.get("到达时间"), user_ticket.get("历时"))) break # 选择退票 if user_do =='3': # 判断是否有票 #name = input('请输入您的姓名') if user_ticket =={} or name !=user_ticket.get('姓名'): print('未查询到您的车票') else: print('您好,这边查询到您订的车票信息:姓名{}的车次号为{},始发站为{},到达站为{},出发时间为{},到达时间为{},历时{}'.format( user_ticket.get("姓名"), user_ticket.get("车次"), user_ticket.get("始发站"), user_ticket.get("到达站"), user_ticket.get("出发时间"), user_ticket.get("到达时间"), user_ticket.get("历时"))) user_return_ticket = input('请问是否退票,请回复Y or N') if user_return_ticket =='N': continue else: user_ticket={} print('已成功退票') if user_do =='4': #name = input('请输入您的名字') if user_ticket =={} or name !=user_ticket.get('姓名') : print('未查询到车票') else: print('您好,这边查询到您订的车票信息:姓名{}的车次号为{},始发站为{},到达站为{},出发时间为{},到达时间为{},历时{}'.format( user_ticket.get("姓名"), user_ticket.get("车次"), user_ticket.get("始发站"), user_ticket.get("到达站"), user_ticket.get("出发时间"), user_ticket.get("到达时间"), user_ticket.get("历时"))) user_rebook = input('是否确认改签,请输入Y or N') if user_rebook =='N': continue else: # 改签车票的信息 user_rebook_ticket = [] while True: # 改签的车次 user_tran_rebook_no = input('请输入的改签的车次号') # 获取车次信息 for n in range(len(train_time_list)): user_rebook_ticket.append(train_time_list[n].get('车次')) # 判断车次是否存在 if user_tran_rebook_no not in user_rebook_ticket: print('无此车次') continue # 遍历车号 else: for x in range(len(train_time_list)): if train_time_list[x].get('车次') == user_tran_rebook_no: user_ticket['车次']= train_time_list[x].get('车次') user_ticket['姓名']=name user_ticket['始发站']= train_time_list[x].get('始发站') user_ticket['到达站'] = train_time_list[x].get('到达站') user_ticket['出发时间']= train_time_list[x].get('出发时间') user_ticket['到达时间'] = train_time_list[x].get('到达时间') user_ticket['历时'] = train_time_list[x].get('历时') print('您的车票已改签,新的车票内容如下:姓名{}的车次号为{},始发站为{},到达站为{},出发时间为{},到达时间为{},历时{}'.format( user_ticket.get("姓名"), user_ticket.get("车次"), user_ticket.get("始发站"), user_ticket.get("到达站"), user_ticket.get("出发时间"), user_ticket.get("到达时间"), user_ticket.get("历时"))) break if user_do == '*': print('退出程序') break out = input('返回上级请按#,退出程序请按*') if out == '#': continue elif out == '*': break
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