创建与去重
s = set([1, 2, 2, 3]) # {1, 2, 3}
常见运算
a, b = {1, 2, 3}, {3, 4} print(a | b, a & b, a - b, a ^ b)
不可变集合
fs = frozenset([1, 2, 3]) # fs.add(4) # AttributeError
转载请注明:周志洋的博客 » Python基础知识-集合基础
s = set([1, 2, 2, 3]) # {1, 2, 3}
a, b = {1, 2, 3}, {3, 4} print(a | b, a & b, a - b, a ^ b)
fs = frozenset([1, 2, 3]) # fs.add(4) # AttributeError
转载请注明:周志洋的博客 » Python基础知识-集合基础