#方式一 l1 = [1, 2, 333, 7, 1, 8, 19, 1, 2, 333] res = list(set(l1)) res.sort(key=l1.index) print(res) #方式2 l1 = [1, 2, 333, 7, 1, 8, 19, 1, 2, 333] res = [] for i in l1: if i not in res: res.append(i) print(res) #方式三 l1 = [1, 2, 333, 7, 1, 8, 19, 1, 2, 333] s = set(l1) res = [] for i in l1: if i in s: res.append(i) s.remove(i) print(res)
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