我有一个setPython,我从中根据条件逐个删除元素.当集合只剩下1个元素时,我需要返回该元素.如何从集合中访问此元素？
一个简化的例子:
S = set(range(5))
for i in range(4):
S = S - {i}
# now S has only 1 element: 4
return ? # how should I access this element
# a lame way is the following
# for e in S:
# return S