您可以使用一组：
b_set = set(map(tuple,a)) #need to convert the inner lists to tuples so they are hashableb = map(list,b_set) #Now convert tuples back into lists (maybe unnecessary?)
或者，如果您更喜欢列表推导/生成器：
b_set = set(tuple(x) for x in a)b = [ list(x) for x in b_set ]
最后，如果顺序很重要，则可以始终对b进行排序：
b.sort(key = lambda x: a.index(x) )
