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【备忘】Python两数组取相同元素与相异元素集合

转成set集合后用&或^进行运算

list1 = [1,2,3,4]
list2 = [2,3,4,5]
same_list = list(set(list1)&set(list2))
diff_list = list(set(list1)^set(list2))