Python_tuple

 1 # 切片
 2 tuple_1 = (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
 3 tuple_2 = tuple_1[1:9]
 4 print(tuple_2)
 5 # OUT:(2, 3, 4, 5, 6, 7, 8, 9)
 6 
 7 # 元组不能删减，但是可以添加（合并元组,产生一个新元组，新元组和原有的元组在内存中是独立的）
 8 tuple_3 = tuple_1 + tuple_2
 9 print(tuple_3)
10 # OUT:(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9)
11 
12 # 重复（*）
13 tuple_4 = (1, 2, 3) * 3
14 print(tuple_4)
15 # OUT:(1, 2, 3, 1, 2, 3, 1, 2, 3)
16 
17 # 迭代元组元组
18 tuple_5 = (1, 2, 3)
19 for i in tuple_5:
20     print(i)
21 ‘‘‘
22 1
23 2
24 3
25 ‘‘‘
26 
27 #判断和统计元素在元组中出现的次数
28 print(2 in tuple_5)
29 print(4 in tuple_5)
30 print(tuple_4.count(2))
31 ‘‘‘
32 True
33 False
34 3
35 ‘‘‘
36 
37 #元组和列表的互相转换
38 list_0=[1,2,3]
39 tuple_0=(4,5,6)
40 tuple_00=tuple(list_0)
41 list_00=list(tuple_0)
42 print(tuple_00)
43 print(list_00)
44 ‘‘‘
45 (1, 2, 3)
46 [4, 5, 6]
47 ‘‘‘