sorted函数按原顺序去重排列
old_list = ['cc', 222, 111, 'bb', 'cc', 'aaa', 'sss', 'bb', 'cc', 'aaa', 'zzz', 'sss', 111]
new_list = sorted(set(old_list), key=old_list.index)
print(new_list)
# ['cc', 222, 111, 'bb', 'aaa', 'sss', 'zzz']
old_list = ['cc', 222, 111, 'bb', 'cc', 'aaa', 'sss', 'bb', 'cc', 'aaa', 'zzz', 'sss', 111]
new_list = sorted(set(old_list), key=old_list.index)
print(new_list)
# ['cc', 222, 111, 'bb', 'aaa', 'sss', 'zzz']