作用：快速创建字典
特点：共用value
seq = [‘google‘, ‘ie‘, ‘firefox‘] # seq为可迭代对象（str, list, tuple, dict, set） dic = dict.fromkeys(seq) print(dic) # {‘google‘: None, ‘ie‘: None, ‘firefox‘: None} dic2 = dict.fromkeys(seq, 10) print(dic2) # {‘google‘: 10, ‘ie‘: 10, ‘firefox‘: 10}
原文：https://www.cnblogs.com/wt7018/p/11621504.html