Python编程好习惯（持续补充）

1、字典 dict 类型的初始化赋值

refer to：https://stackoverflow.com/questions/8406242/why-does-pycharms-inspector-complain-about-d

my_dict = {}
my_dict['key1'] = 'value1'
my_dict['key2'] = 2

dict 初始化应尽量写在一个语句里。list 也如此，只要是明确包含的元素，都应当在初始化阶段写在变量定义里面。

my_dict = {'key1': 'value1'
           'key2': 2}