關於python列表去重複後按照元列表序列輸出

list_t = ['a','b','c','a','d','c','b','e'];

list_tt = list(set(list_t));

print list_tt;#無序輸出

list_tt.sort(key=list_t.index)

print list_tt;#維持和list_t 順序相同