code: def next(self):
      print(
          ",".join(
              str(x)
              for x in [
                  self.data.datetime.datetime(),
                  self.data.open[0],
                  self.data.high[0],
                  self.data.high[0],
                  self.data.close[0],
                  self.data.volume[0],
              ]
          )
      )
  
file_path: backtrader/samples/bidask-to-ohlc/bidask-to-ohlc.py
imports: from __future__ import absolute_import, division, print_function
  import argparse
  import datetime
  import backtrader
  import backtrader.feeds
label_desc: Use image node_id 1 for calling the St obj's underlying member method code with example usage: obj.next() without return types