def dedupe(items, key=None):

    seen = set()

    for item in items:

        val = item if key is None else key(item)

        if val not in seen:

            yield item

            seen.add(val)

def deleteRepeat(lst):

    '''

    列表去重

    :param lst:

    :return:

    '''

    if not lst:

        return lst

    try:

        l = list(dedupe(lst, key=lambda k: (k[key1], k[key2])))

    except:

        l = []

        l.append(lst[0])

        for dict in lst:

            k = 0

            for item in l:

                if dict[key1] != item[key1] or dict[key2] != item[key2]:

                    k = k + 1

                else:

                    break

                if k == len(l):

                    l.append(dict)

    return l