code: def test_main():
      """
      Dry-run python -m stable_baselines.logger
      """
      _demo()
  
imports: import pytest
  import numpy
  from stable_baselines.logger import make_output_format, read_tb, read_csv, read_json, _demo
  from .test_common import _maybe_disable_mpi
label_desc: Use image node_id 1 for calling a global function with example usage: test_main() without return types