code: def execute(self, portfolio_name=None):
          
          assert self.order_id == 0, 'This order has already been place. Start a new order.'
          assert len(self.loans) > 0, 'There aren\'t any loans in your order'
  
          # Place the order
          self.__stage_order()
          token = self.__get_strut_token()
          self.order_id = self.__place_order(token)
  
          self.__log('Order #{0} was successfully submitted'.format(self.order_id))
  
          # Assign to portfolio
          if portfolio_name:
              return self.assign_to_portfolio(portfolio_name)
  
          return self.order_id
docs: Place the order with LendingClub
  
          Parameters
          ----------
          portfolio_name : string
              The name of the portfolio to add the invested loan notes to.
              This can be a new or existing portfolio name.
  
          Raises
          ------
          LendingClubError
  
          Returns
          -------
          int
              The completed order ID