练习2

  1 #第一大题
  2 # li = [‘alex‘,‘Wusir‘,‘ritian‘,‘barry‘,‘武沛齐‘]
  3 #print(len(li))
  4 # li.append(‘seven‘)
  5 # print(li)
  6 # li.insert(1,‘Tony‘)
  7 # print(li)
  8 # li[2] = ‘Kelly‘
  9 # print(li)
 10 # li[3] = ‘妖怪‘
 11 # print(li)
 12 # data = [1,‘a‘,3,4,‘heart‘]
 13 # for item in data:
 14 #     li.append(item)
 15 # print(li)
 16 # s = ‘qwert‘
 17 # for item in s:
 18 #     li.append(item)
 19 # print(li)
 20 # li.remove(‘barry‘)
 21 # print(li)
 22 # li.remove(li[2])
 23 # print(li)
 24 # del li[1:5]
 25 # print(li)
 26 
 27 #第二大题
 28 # li = [1,3,2,‘a‘,4,‘b‘,5,‘c‘]
 29 # data = li[0:3]
 30 # print(data)
 31 # data = li[3:6]
 32 # print(data)
 33 # data = li[0::2]
 34 # print(data)
 35 # data = li[1::2]
 36 # data2 = li[1:6:2]
 37 # print(data)
 38 # print(data2)
 39 # data = li[-1:]
 40 # print(data)
 41 # data = li[5:0:-2]
 42 # print(data)
 43 
 44 #第三大题
 45 # lis = [2,3,‘k‘,[‘qwe‘,20,[‘k1‘,[‘tt‘,3,‘1‘]],89],‘ab‘,‘adv‘]
 46 # print(lis[2].upper())
 47 # lis[1] = 100
 48 # print(lis)
 49 # lis[3][2][1][0] = 101
 50 # print(lis)
 51 # lis[3].insert(0,‘火车头‘)
 52 # print(lis)
 53 
 54 #第四题
 55 ‘‘‘
 56 user = [‘武沛齐‘,‘景女神‘,‘肖大侠‘]
 57 for item in user:
 58     data = user.index(item)
 59     a = str(data) + item
 60     print(a)
 61 for index in range(len(user)):
 62     print(index,user[index])
 63     ‘‘‘
 64 #第五题
 65 ‘‘‘
 66 user = [‘武沛齐‘,‘景女神‘,‘肖大侠‘]
 67 count = 1
 68 for item in user:
 69     print(count,item)
 70     count += 1
 71 ‘‘‘
 72 
 73 #第六题
 74 ‘‘‘
 75 goods = [‘汽车‘,‘飞机‘,‘火箭‘]
 76 print(goods)
 77 choice_goods = input(‘请选择你想要的商品:‘)
 78 if choice_goods == ‘0‘:
 79     print(goods[0])
 80 elif choice_goods == ‘1‘:
 81     print(goods[1])
 82 elif choice_goods == ‘2‘:
 83     print(goods[2])
 84 else:
 85     print(‘你的输入有误，没有该商品‘)
 86 ‘‘‘
 87 ‘‘‘
 88 goods = [‘汽车‘,‘飞机‘,‘火箭‘]
 89 for index in range(len(goods)):
 90     print(index,goods[index])
 91 index = int(input(‘请选择你想要的商品:‘))
 92 text = goods[index]
 93 messge = ‘你选择的商品是{}‘.format(text)
 94 print(messge)
 95 ‘‘‘
 96 
 97 #第七题
 98 ‘‘‘
 99 l = []
100 for i in range(0,51):
101     if i%3==0:
102         l.append(i)
103 print(l)
104 ‘‘‘
105 #第八题
106 ‘‘‘
107 l = []
108 for i in range(0,51):
109     if i % 3 == 0:
110         l.insert(0,i)
111 print(l)
112 ‘‘‘
113 ‘‘‘
114 data_list = []
115 li = [‘alexC‘,‘AbC‘,‘egon‘,‘riTiAn‘,‘WuSir‘,‘ agc‘]
116 for item in li:
117     item = item.strip()
118     if item.startswith(‘a‘):
119         data_list.append(item)
120 print(data_list)
121 ‘‘‘
122 
123 #第十题
124 data = [‘京1231‘,‘冀8899‘,‘京166631‘,‘晋989‘]
125 data1 = []
126 for item in data:
127     if item.startswith(‘京‘):
128         data1.append(item)
129 print(data1)
130 print(‘京牌车辆的数量为{}‘.format(len(data1)))