code: def __init__(self):
      btind.SMA()
  
file_path: backtrader/tests/test_writer.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import time
  import testcommon
  import backtrader
  import backtrader.indicators
label_desc: Use image node_id 1 to create a new TestStrategy object from inherited base classes: bt with example: obj = TestStrategy()