2018.3.8习题

1. 查找列表中的元素，移除空格，并查找以a或者A开头，并且以c结尾的所有元素
   li = ['alec','Arib','Alec','Tony','rain']
   tu = ('alec','Aria','Alec','Tony','rain')
   dic = {'k1:'alec','k2':'Aric','k3':'Alec','k4':'Tony'}

   li = ['  alec',' ariC','  Alexc',' Tony','rain']
   tu = ('alec','  aric',' Alex','  Tony','rain')
   dic = {'k1':' alec','k2':'  aric','k3':'Alex','k4':'Tony'}
   
   for i in li:
       y = i.strip()
       if y[0].capitalize() == 'A' and y.endswith('c'):
           print(y)
   for m in tu:
       n = m.strip()
       if n[0].capitalize() == 'A' and n.endswith('c'):
           print(n)    
   for x in dic.values():
       z = x.strip()
       if z[0].capitalize() == 'A' and z.endswith('c'):
           print(z)

2. 购物车(python2.7计算中文是按字节来的，而3.5计算则是用字符来计算)
   要求用户输入总资产，例如5000
   显示商品列表，让用户根据序号选择商品，加入购物车
   购买，如果商品总额大于总资产，提示用户余额不足，否则购买成功
   可充值，某商品移除购物车
   sp = [
   {'name':'主机'，'price':4000},
   {'name':'显示器'，'price':1000},
   {'name':'鼠标'，'price':100},
   {'name':'键盘'，'price':300}
   ]

3.  

   ye = raw_input("请输入您的余额:")#输入余额
   iye = int(ye)
   sp = [
       {'name':'主机','price':4000},
       {'name':'显示器','price':1000},
       {'name':'鼠标','price':100},
       {'name':'键盘','price':300}
   ]
   
   print(ye)#打印余额
   sp_id = 1
   for i in sp:
       print(sp_id)
       print(i.get('name'),i.get('price'))#打印商品
       sp_id += 1
   ll = []
   while True:
       li = ['1','2','3','4','5','6']#用户只能有的选项
       inp = raw_input('选择您要购买商品的编号，按5删进入购物车删除商品，按6结算：')
       if inp in li:#判断用户的输入是否在选项内
           if inp == '6':#按6结算
               je = ll.count('1')*4000+ll.count('2')*1000+ll.count('3')*100+ll.count('4')*300#计算总金额
               if je > iye:#如果总金额大于余额
                   print('您的余额已不足')#告诉客户超出
                   wx = raw_input("输入'cz'氪金或者输入其他返回购物车:")
                   if wx == 'cz':#氪金模块
                       kejin = raw_input('大兄弟，你要氪金多少:')
                       ikejin = int(kejin)
                       iye = iye+ikejin
                   else:
                       print('继续选购!')
               else:
                   break
           elif inp == '5':#按5删除购买的商品
               rnp = 'p'#设置初始参数
               print('输入'q'退出!')
               while rnp != 'q':
                   rnp = raw_input('输入您好删除商品的编号:')
                   if rnp in ll:#判断要删除的物品在不在购物车
                       ll.remove(rnp)
                   elif rnp == 'q':#按q退出删除模块
                       break
                   else:#不在购物车，告诉客户
                       print('您没有选购此商品!')
           else:#按1~4添加进购物车
               ll.append(inp)
       else:#不在选项内，重选
           print('输入不正确，请重新选择！')
   print('结算成功!')
   print('您现在的余额为:')
   omg = iye - je
   print(omg)