code: def main(extension, strict_extensions, default_extension, x):
      
  
      # install a logbook handler before performing any other operations
      logbook.StderrHandler().push_application()
      create_args(x, zipline.extension_args)
      load_extensions(
          default_extension,
          extension,
          strict_extensions,
          os.environ,
      )
docs: Top level zipline entry point.