Python 内建函数 - frozenset([iterable])

Manual

Return a new frozenset object, optionally with elements taken from iterable. frozenset is a built-in class. See frozenset and Set Types — set, frozenset for documentation about this class.

For other containers see the built-in set, list, tuple, and dict classes, as well as the collections module.

直译

可根据iterable获得元素，返回一个frozenset对象，frozenset是内建类，详情见frozenset和Set类型 — set, frozenset

实例

>>> a =  [1, 1, 2, 3, 5, 7, 2]
>>> fs = frozenset(a)
>>> fs
frozenset({1, 2, 3, 5, 7})

Note

• frozenset集合元素必须可哈希
• 不可变性

拓展阅读

frozenset和Set类型 — set, frozenset