def ex2(dic):
    unique = phones_removed = []
    for i in range(len(dic)):
        _name_city = dic[i]['name'] + dic[i]['city']
        if _name_city not in unique:
            unique.append(_name_city)
        else:
            _phones = dic[i]['phones']
            for phone in _phones:
                if phone not in phones_removed:
                    phones_removed.append(phone)
            dic[i].clear()
    return dic


def main():
    phones_list = [{'name': 'Ivan', 'city': 'Moscow', 'phones': ['232-19-55', '+7 (916) 230-00-75']},
                   {'name': 'Anna', 'city': 'Samara', 'phones': ['200-11-15']},
                   {'name': 'Anna', 'city': 'Vologda', 'phones': ['+7 (931) 711-00-75']},
                   {'name': 'Nikolay', 'city': 'Moscow', 'phones': ['+7 (916) 778-71-05', '331-66-11', '783-33-85']},
                   {'name': 'Ivan', 'city': 'Moscow', 'phones': ['+7 (916) 205-41-05', '232-19-55']},
                   {'name': 'Anna', 'city': 'Samara', 'phones': ['+7 (916) 105-13-56']}
                   ]
    new_dict = ex2(phones_list)
    print(new_dict)


if __name__ == '__main__':
    main()