如何用Python的fromkeys()方法高效生成字典？
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本文共计80个文字，预计阅读时间需要1分钟。
功能：快速创建字典特点：常用value，seq=[google, ie, firefox]
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}
本文共计80个文字，预计阅读时间需要1分钟。
功能：快速创建字典特点：常用value，seq=[google, ie, firefox]
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}