Python_字典创建的7种方式

 1 # 字典的创建
 2 # 方式1.创建一个空字典
 3 dic = {}
 4 print(dic)
 5 print(type(dic))
 6 
 7 # 方式2.赋值创建
 8 dic = {'name': 'miaoge', 'age': 18}
 9 print(dic)
10 print(type(dic))
11 
12 # 方式3.关键字dict和关键字参数创建
13 dic = dict(name='miaoge', age=18)
14 print(dic)
15 print(type(dic))
16 
17 # 方式4.把列表转成字典（列表内的元素要是元组）
18 l = [('name', 'miaoge'), ('age', 18)]
19 dic = dict(l)
20 print(dic)
21 print(type(dic))
22 
23 # 方式5.利用zip函数创建一个字典
24 re = zip('abc', [1, 2, 3])
25 dic = dict(re)
26 print(dic)
27 print(type(dic))
28 
29 # 方式6.通过字典推导式创建
30 dic = {i: i*2 for i in range(10)}
31 print(dic)
32 print(type(dic))
33 
34 # 方式7.通过dict.fromkeys()创建
35 dic = dict.fromkeys('abcd', 'go for it')
36 print(dic)
37 print(type(dic))
38 
39 # 方式8.其他创建方式
40 l = ['x', 1, 'y', 2, 'z', 3]
41 dic = dict(zip(l[::2], l[1::2]))
42 print(dic)
43 print(type(dic))