code: def test__read_pdb():
      """Test private _read_pdb"""
      ppdb = PandasPdb()
      path, txt = ppdb._read_pdb(TESTDATA_FILENAME)
      print(txt)
      assert txt == three_eiy
  
file_path: biopandas/biopandas/pdb/tests/test_read_pdb.py
imports: import os
  from urllib.error import HTTPError, URLError
  from urllib.request import urlopen
  import numpy
  import pandas
  from biopandas.pdb import PandasPdb
  from biopandas.testutils import assert_raises
  from nose.tools import raises
label_desc: Use image node_id 1 for calling a global function with example usage: test__read_pdb() without return types