code: def add(self, tid, result, role, session, oid=None, content=None, anony=None):
          '''taobao.traderate.add 新增单个评价
          
          新增单个评价(注：在评价之前需要对订单成功的时间进行判定（end_time）,如果超过15天，不能再通过该接口进行评价)'''
          request = TOPRequest('taobao.traderate.add')
          request['tid'] = tid
          request['result'] = result
          request['role'] = role
          if oid!=None: request['oid'] = oid
          if content!=None: request['content'] = content
          if anony!=None: request['anony'] = anony
          self.create(self.execute(request, session)['trade_rate'])
          return self add(self, tid, result, role, session, oid=None, content=None, anony=None):
          '''taobao.traderate.add 新增单个评价
          
          新增单个评价(注：在评价之前需要对订单成功的时间进行判定（end_time）,如果超过15天，不能再通过该接口进行评价)'''
          request = TOPRequest('taobao.traderate.add')
          request['tid'] = tid
          request['result'] = result
          request['role'] = role
          if oid!=None: request['oid'] = oid
          if content!=None: request['content'] = content
          if anony!=None: request['anony'] = anony
          self.create(self.execute(request, session)['trade_rate'])
          return self
docs: taobao.traderate.add 新增单个评价
          
          新增单个评价(注：在评价之前需要对订单成功的时间进行判定（end_time）,如果超过15天，不能再通过该接口进行评价)