code: def check_stoplimit_prices(price, label):
      
      try:
          if not isfinite(price):
              raise BadOrderParameters(
                  msg="Attempted to place an order with a {} price "
                      "of {}.".format(label, price)
              )
      # This catches arbitrary objects
      except TypeError:
          raise BadOrderParameters(
              msg="Attempted to place an order with a {} price "
                  "of {}.".format(label, type(price))
          )
  
      if price < 0:
          raise BadOrderParameters(
              msg="Can't place a {} order with a negative price.".format(label)
          )
docs: Check to make sure the stop/limit prices are reasonable and raise
      a BadOrderParameters exception if not.