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Python :从小白到大神之路 YDOOK.COM
for itme in set:
execute codes block
在这里插入图片描述
for i in set1:
excute some codes 1...
for j in set2:
excute some codes 2...
>>> a = [1, 2, 3, 4, 5, 6, 7]
>>> for j in b:
File "<stdin>", line 1
for j in b:
^
IndentationError: unexpected indent
>>>
>>>
>>>
>>>
>>> a = [1, 2, 3, 4, 5, 6, 7]
>>> b = [10, 20, 30, 40, 50, 60, 70]
>>> for i in a:
... print(i)
... for j in b:
... print(j)
... print(i+j)
...
1
10
11
20
21
30
31
40
41
50
51
60
61
70
71
2
10
12
20
22
30
32
40
42
50
52
60
62
70
72
3
10
13
20
23
30
33
40
43
50
53
60
63
70
73
4
10
14
20
24
30
34
40
44
50
54
60
64
70
74
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
6
10
16
20
26
30
36
40
46
50
56
60
66
70
76
7
10
17
20
27
30
37
40
47
50
57
60
67
70
77
>>>
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