code: def _test_args():
      """Extra arguments to use when zipline's automated tests run this example."""
      import pandas as pd
  
      return {
          "start": pd.Timestamp("2004", tz="utc"),
          "end": pd.Timestamp("2008", tz="utc"),
      }
  
file_path: zipline/zipline/examples/olmar.py
imports: import sys
  import logbook
  import numpy
  from zipline.finance import commission, slippage
label_desc: Use image node_id 6 for calling a global function with example usage: _test_args() and returns: dict