python自学第5天（MJ培根）

元祖

 1 # 元祖 -- 只读列表，儿子不可变，孙子可能变，可以循环查询，可以切片
 2 
 3 # tu = (11,22,33,'alex',['原纱央莉', '吉泽明步'],['桃谷绘理香','蒂亚','xiepeigen'],'egon')
 4 # #tu[3] = tu[3].upper()    #TypeError: 'tuple' object does not support item assignment
 5 # tu[4].append("苍井空")
 6 # tu04 = tu[0:4]
 7 # tu[5][2] = tu[5][2].upper()
 8 # print(tu)
 9 #
10 # # s = 'MICHAEL'
11 # s = ['桃谷绘理香','蒂亚','xiepeigen']        #列表转换成字符串
12 # s1 = '_'.join(s)
13 # print(s1)
14 
15 #str ----->>list  split:字符串转换列表
16 
17 # str_char = "川 岛 芳 子"
18 # s2 = str_char.split()
19 # print(s2)
20 
21 #range
22 # for i in range(0,10):                         # 0-9
23 #     print(i)
24 
25 # for i in range(0,10,2):                       # 加步长
26 #     print(i)
27 
28 # for i in range(10,0,-1):                        # 倒序走
29 #     print(i)
30 
31 #range创建数字列表
32 # numbers = list(range(1,6))
33 # print(numbers)
34 
35 li = [1,2,'alex',['桃谷绘理香',['蒂亚','xiepeigen'],1,'a'],'sb']
36 print(li)
View Code

 

 
 
posted @ 2021-03-10 14:45  MJ培根  阅读(55)  评论(0)    收藏  举报