code: def test_atom():
      rg = p1t48.gyradius(("ATOM",))
      expected_rg = 18.1508
      assert (
          rg == expected_rg
      ), f"Expected {expected_rg}, got {rg} instead"
  
file_path: biopandas/biopandas/pdb/tests/test_gyradius.py
imports: from biopandas.pdb import PandasPdb
  import os
  import pandas
  from nose.tools import raises
  import warnings
label_desc: Use image node_id 2 for calling a global function with example usage: test_atom() without return types