python 字典去重（列表中包含字典）

def list_dict_duplicate_removal(electron_list_dict):
    """列表中字典去重"""
    run_function = lambda x, y: x if y in x else x + [y]
    return reduce(run_function, [[], ] + electron_list_dict)
```


2. 列表中嵌套字典，按字典中得某个键去重
```
def test():
    list = [{'country_id': 15, 'country_zh_name': '美国', 'country_en_name': '美国'}, {'country_id': 15, 'country_zh_name': '美国', 'country_en_name': 'the United States'}, {'country_id': 20, 'country_zh_name': '德国', 'country_en_name': 'Germany'}]
    a = []
    a.append(list[0])
    for dict in list:
        # print len(l4)
        k = 0
        for item in a:
            # print 'item'
            if dict['country_id'] != item['country_id']:
                k = k + 1
                # continue
            else:
                break
            if k == len(a):
                a.append(dict)
    print(a)
if __name__ == '__main__':
    test()