说我有一个列表看起来像这样：

a = [(1,2),(3,1),(2,1),(4,5),(9,3),(1,3)]

然后,我希望看到这样的东西：

b = [(1,2),(3,1),(4,5),(9,3)]

非常感谢！

解决方法:

b = []
seen = set()
for t in a:
    s = tuple(sorted(t))
    if s not in seen:
        seen.add(s)
        b.append(t)

要么

seen = set()
b = [t for t in a if tuple(sorted(t)) not in seen and not seen.add(tuple(sorted(t)))]