该方法用于创建并返回一个新的字典.两个参数,第一个为字典的键,第二个为字典的值(默认为None).
示例:
1.
>>> dict = dict.fromkeys([1,2,3])
>>> dict
{1: None, 2: None, 3: None}
>>> dict = dict.fromkeys([1,2,3],'test')
>>> dict
{1: 'test', 2: 'test', 3: 'test'}
>>> dict = dict.fromkeys([1,2,3],['one','two','three'])
>>> dict
{1: ['one', 'two', 'three'], 2: ['one', 'two', 'three'], 3: ['one', 'two', 'three']}
原文:https://www.cnblogs.com/w-j-c/p/10776566.html