code: def test_run(main=False):
      check_stocks()
      check_futures()
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import testcommon
  import backtrader
  from backtrader import CommissionInfo, Position
label_desc: Use image node_id 3 for calling a global function with example usage: test_run(main) without return types