python 集合

# python集合 a = "sdasdasda" a1 = set(a)#把a變成集合（自動去重） print(a1) b = {"a","b","c"} d = "befghj" d = set(d) print(b&d)#交集 print(b|d)#並集 print(b-d)#差集  

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