code: def test_get_all():
      ppdb = PandasPdb()
      ppdb.read_pdb(TESTDATA_FILENAME)
      for i in ["c-alpha", "hydrogen", "main chain"]:
          ppdb.get(i)
  
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 11 for calling a global function with example usage: test_get_all() without return types