code: def notify_order(self, order):
      if not order.alive():
          print(
              ",".join(
                  str(x)
                  for x in (
                      self.data.num2date(order.executed.dt).date(),
                      order.executed.size * 1 if order.isbuy() else -1,
                      order.executed.price,
                  )
              )
          )
  
file_path: backtrader/samples/order-history/order-history.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import argparse
  import datetime
  import backtrader
label_desc: Use image node_id 1 for calling the St obj's underlying member method code with example usage: obj.notify_order(order) without return types