code: def __init__(self):
      self.sma = btind.SMA(self.data, period=self.p.period)
  
file_path: backtrader/samples/data-replay/data-replay.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import argparse
  import backtrader
  import backtrader.feeds
  import backtrader.indicators
label_desc: Use image node_id 1 to create a new SMAStrategy object from inherited base classes: bt with example: obj = SMAStrategy()