如果你對python中的for循環不是很清楚,請看看這篇文章:”for循環控制語句——菜鳥的Python筆記“
下面是我做的一些學習記錄供大家參考:
1 #基本的for循環語句 2 test_list = [2,"Jone",3,6,7,'hongten','hanyuan','good',"Tom"] 3 #打印列表的長度 4 print(len(test_list)) 5 6 #遍歷列表 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 #遍歷一個字符串 13 print('遍歷一個字符串') 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 #遍歷一個元組 20 print('遍歷一個元組') 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將兩個列表合並 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列表為:') 40 print(L1) 41 print(L3) 42 for (i,j) in zip(L1,L3): 43 print(i,j) 44 45 #可以看出來當長度不一的時候,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來構造一個字典 51 print('字典中的keys:') 52 print(test_keys) 53 print('字典中的key對應的value:') 54 print(test_values) 55 print('構造字典后') 56 test_dic = dict(zip(test_keys,test_values)) 57 for key in test_dic: 58 print( key + ':' + test_dic[key])
運行效果:
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 遍歷一個字符串 h e l l o , i ' m h o n g t e n [('a', 1), ('b', 2), ('c', 3), ('d', 4)] 遍歷一個元組 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列表為: [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對應的value: ['Hongten', '20', 'M', '55', '170'] 構造字典后 weight:55 hight:170 gender:M name:Hongten age:20 >>>