1 #基本的for循环语句
 2 test_list = [2,4.4,‘Liu‘,‘A‘,"B",‘HelloPy‘,"Today"]
 3 #打印列表的长度
 4 print(len(test_list))
 5 for ele in test_list:
 6     print(ele)
 7     
 8 print (‘#‘ * 50)
 9 test_str = "hello,Python"
10 print("打印字符串：" + test_str)
11 print(‘遍历字符串:‘)
12 for s in test_str:
13      print  (s)
14 
15 print (‘#‘ * 50)
16 test_tuple = [("a",1),("b",2),("c",3),("d",4)]
17 print(test_tuple)
18 print(‘遍历一个元组‘)
19 for (i,j) in test_tuple:
20     print(i,j)
21 
22 print (‘#‘ * 50)
23 #字典迭代器
24 test_dict = {‘name‘:‘Leo‘,‘age‘:‘20‘,‘gender‘:‘M‘,‘sports‘:‘网球‘}
25 for key  in test_dict:
26     print(key + ‘:‘ + test_dict[key])
27 
28 print (‘#‘ * 50)
29 #使用zip将两个列表合并
30 L1 = [1,3,5,7]
31 L2 = [2,4,6,8]
32 print(zip(L1,L2))
33 for (i,j) in zip(L1,L2):
34     print(i,j)
35 
36 print (‘#‘ * 50)
37 L3 = L2[:]
38 L3.remove(8)
39 print(‘L1,L3列表为：‘)
40 print(L1)
41 print(L3)
42 for (i,j) in zip(L1,L3):
43     print(i,j)
44 #可以看出来当长度不一的时候，多余的被忽略
45 
46 print (‘#‘ * 50)
47 #使用zip来构造一个字典
48 test_keys = [‘name‘,‘age‘,‘gender‘,‘weight‘,‘hight‘]
49 test_values = [‘Leo‘,‘20‘,‘L‘,‘65‘,‘186‘]
50 print(‘字典中的keys：‘ )
51 print(test_keys)
52 print(‘字典中的key对应的value：‘)
53 print(test_values)
54 print(‘构造字典后‘)
55 test_dic = dict(zip(test_keys,test_values))
56 for key in test_dic:
57      print( key + ‘:‘ + test_dic[key])

 1 >>> ================================ RESTART ================================
 2 >>> 
 3 7
 4 2
 5 4.4
 6 Liu
 7 A
 8 B
 9 HelloPy
10 Today
11 ##################################################
12 打印字符串：hello,Python
13 遍历字符串:
14 h
15 e
16 l
17 l
18 o
19 ,
20 P
21 y
22 t
23 h
24 o
25 n
26 ##################################################
27 [(‘a‘, 1), (‘b‘, 2), (‘c‘, 3), (‘d‘, 4)]
28 遍历一个元组
29 a 1
30 b 2
31 c 3
32 d 4
33 ##################################################
34 name:Leo
35 age:20
36 sports:网球
37 gender:M
38 ##################################################
39 <zip object at 0x02A55788>
40 1 2
41 3 4
42 5 6
43 7 8
44 ##################################################
45 L1,L3列表为：
46 [1, 3, 5, 7]
47 [2, 4, 6]
48 1 2
49 3 4
50 5 6
51 ##################################################
52 字典中的keys：
53 [‘name‘, ‘age‘, ‘gender‘, ‘weight‘, ‘hight‘]
54 字典中的key对应的value：
55 [‘Leo‘, ‘20‘, ‘L‘, ‘65‘, ‘186‘]
56 构造字典后
57 name:Leo
58 age:20
59 hight:186
60 gender:L
61 weight:65
62 >>> 

 1 num = 1
 2 #必须设定初始值
 3 while (num < 10):
 4     print (num)
 5     num = num +1
 6 #格式代表了大括号
 7 
 8 print (‘#‘*50)
 9 # continue 和 break 用法
10 i = 1
11 #输出偶数
12 while i < 10:
13     i= i+1
14     if i%2 == 0:
15         print (i)
16         continue
17 print(‘#‘*25)
18 #大于10时跳出循环
19 i = 1
20 while i<10:
21     print (i)
22     i = i + 1
23     if i>10:
24         break

 1 >>> ================================ RESTART ================================
 2 >>> 
 3 1
 4 2
 5 3
 6 4
 7 5
 8 6
 9 7
10 8
11 9
12 ##################################################
13 2
14 4
15 6
16 8
17 10
18 #########################
19 1
20 2
21 3
22 4
23 5
24 6
25 7
26 8
27 9
28 >>> 

 1 print (‘#‘*50)
 2 # 在循环的某一次执行中，遇到continue,则跳过这一次执行，进行下一次的操作
 3 # 停止执行整个循环
 4 for i in range(10):
 5     if i == 2: 
 6         continue
 7     print (i)
 8 print (‘#‘*50)
 9 for i in range(10):
10     if i == 2:        
11         break
12     print (i)

 1 ##################################################
 2 0
 3 1
 4 3
 5 4
 6 5
 7 6
 8 7
 9 8
10 9
11 ##################################################
12 0
13 1
14 >>>