code: def __init__(self):
      bt.obs.BuySell(self.data0, barplot=True)  # done here for
      BuySellArrows(self.data1, barplot=True)
  
file_path: backtrader/samples/future-spot/future-spot.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import argparse
  import random
  import backtrader
label_desc: Use image node_id 1 to create a new St object from inherited base classes: bt with example: obj = St()