如果你对python中的for循环不是很清楚,请看看这篇文章:”for循环控制语句——菜鸟的Python笔记“
下面是我做的一些学习记录供大家参考:
1 #基本的for循环语句 2 test_list = [2,"Jone",3,6,7,\'hongten\',\'hanyuan\',\'good\',"Tom"] 3 #打印列表的长度 4 print(len(test_list)) 5 6 #遍历列表 7 for i in test_list: 8 print(i) 9 10 test_str = "hello,i\'m hongten" 11 print(\'打印字符串:\' + test_str) 12 #遍历一个字符串 13 print(\'遍历一个字符串\') 14 for i in test_str: 15 print(i) 16 17 test_tuple = [("a",1),("b",2),("c",3),("d",4)] 18 print(test_tuple) 19 #遍历一个元组 20 print(\'遍历一个元组\') 21 for (i,j) in test_tuple: 22 print(i,j) 23 24 test_dict = {\'name\':\'hongten\',\'age\':\'20\',\'gender\':\'M\',\'sports\':\'足球,乒乓球,游泳\'} 25 #字典迭代器 26 for key in test_dict: 27 print(key + \':\' + test_dict[key]) 28 29 L1 = [1,3,5,7] 30 L2 = [2,4,6,8] 31 #使用zip将两个列表合并 32 print(zip(L1,L2)) 33 34 for (i,j) in zip(L1,L2): 35 print(i,j) 36 print(\'#######################################################\') 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 45 #可以看出来当长度不一的时候,多余的被忽略 46 47 48 test_keys = [\'name\',\'age\',\'gender\',\'weight\',\'hight\'] 49 test_values = [\'Hongten\',\'20\',\'M\',\'55\',\'170\'] 50 #使用zip来构造一个字典 51 print(\'字典中的keys:\') 52 print(test_keys) 53 print(\'字典中的key对应的value:\') 54 print(test_values) 55 print(\'构造字典后\') 56 test_dic = dict(zip(test_keys,test_values)) 57 for key in test_dic: 58 print( key + \':\' + test_dic[key])
运行效果:
Python 3.3.2 (v3.3.2:d047928ae3f6, May 16 2013, 00:03:43) [MSC v.1600 32 bit (Intel)] on win32 Type "copyright", "credits" or "license()" for more information. >>> ================================ RESTART ================================ >>> 9 2 Jone 3 6 7 hongten hanyuan good Tom 打印字符串:hello,i\'m hongten 遍历一个字符串 h e l l o , i \' m h o n g t e n [(\'a\', 1), (\'b\', 2), (\'c\', 3), (\'d\', 4)] 遍历一个元组 a 1 b 2 c 3 d 4 sports:足球,乒乓球,游泳 gender:M name:hongten age:20 <zip object at 0x01FA1AA8> 1 2 3 4 5 6 7 8 ####################################################### L1,L3列表为: [1, 3, 5, 7] [2, 4, 6] 1 2 3 4 5 6 字典中的keys: [\'name\', \'age\', \'gender\', \'weight\', \'hight\'] 字典中的key对应的value: [\'Hongten\', \'20\', \'M\', \'55\', \'170\'] 构造字典后 weight:55 hight:170 gender:M name:Hongten age:20 >>>