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Python基礎-字典篇

log people col 基礎 test bsp item name style

 1 # 第一部分:
 2 # 創建字典
 3 dict_test = {} # 這是一個空的字典
 4 dict1 = dict()
 5 # 添加鍵-值對
 6 dict1[name_key] = name_value
 7 # 訪問字典
 8 print(dict1[name_key])
 9 # 修改字典中的值
10 dict1[name_key] = Jack
11 print(dict1[name_key])
12 # 刪除鍵-值對
13 del dict1[name_key]
14 
15 # 第二部分:
16 dict2 = {
17     name
:Jack, 18 age:21, 19 } 20 # 遍歷鍵-值對 21 for name,age in dict2.items(): 22 print(name,age) 23 # 遍歷所有鍵(順序、不順序) 24 #不順序 25 for key in dict2.keys(): 26 print(key) 27 #順序 28 for key in sorted(dict2.keys()): 29 print(key) 30 # 遍歷所有值 31 for value in dict2.values(): 32 print(value)
33 34 # 第三部分: 35 # 列表字典 36 people = [{name:Jack},{name:son},{name:father}] 37 # 字典中儲存列表 38 family = { 39 father_name:Jack, 40 son_name:[son1,son2,son3] 41 } 42 # 字典中儲存字典 43 user_dict = { 44 user_info:{name:Jack,age:21} 45 }

Python基礎-字典篇