code: def initialize(context):
      context.has_ordered = False
      context.stocks = stocks
  
      # Explicitly set the commission/slippage to the "old" value until we can
      # rebuild example data.
      # github.com/quantopian/zipline/blob/master/tests/resources/
      # rebuild_example_data#L105
      context.set_commission(
          commission.PerShare(cost=0.0075, min_trade_cost=1.0)
      )
      context.set_slippage(slippage.VolumeShareSlippage())
  
imports: from zipline.api import order, symbol
  from zipline.finance import commission, slippage
label_desc: Use image node_id 1 for calling a global function with example usage: initialize(context) without return types