What does set mean in python

The set() function creates an unordered set of non-repeating elements, which can perform relationship testing, delete duplicate data, and calculate intersection, difference, union, etc.

set Syntax:

class set([iterable])

Parameter description:

iterable -- iterable object object ;

Return value: Return a new collection object.

The following examples show how to use set:

>>>x = set('runoob') >>> y = set('google') >>> x, y (set(['b', 'r', 'u', 'o', 'n']), set(['e', 'o', 'g', 'l'])) # 重复的被删除 >>> x & y # 交集 set(['o']) >>> x | y # 并集 set(['b', 'e', 'g', 'l', 'o', 'n', 'r', 'u']) >>> x - y # 差集 set(['r', 'b', 'u', 'n']) >>>

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