code: def notify_order(self, order):
      if order.status != order.Completed:
          return
  
      self.order = None
      print(
          "{} {} Executed at price {}".format(
              bt.num2date(order.executed.dt).date(),
              "Buy" * order.isbuy() or "Sell",
              order.executed.price,
          )
      )
  
file_path: backtrader/samples/cheat-on-open/cheat-on-open.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import argparse
  import datetime
  import backtrader
label_desc: Use image node_id 2 for calling the St obj's underlying member method code with example usage: obj.notify_order(order) without return types