code: def load_pdb(pdb, path=True, pdb_id='', ignore_end=False):
      
      pdb_p = PdbParser(pdb, path=path, pdb_id=pdb_id, ignore_end=ignore_end)
      return pdb_p.make_ampal()
docs: Converts a PDB file into an AMPAL object.
  
      Parameters
      ----------
      pdb : str
          Either a path to a PDB file or a string containing PDB
          format structural data.
      path : bool, optional
          If `true`, flags `pdb` as a path and not a PDB string.
      pdb_id : str, optional
          Identifier for the `Assembly`.
      ignore_end : bool, optional
          If `false`, parsing of the file will stop when an "END"
          record is encountered.
  
      Returns
      -------
      ampal : ampal.Assembly or ampal.AmpalContainer
          AMPAL object that contains the structural information from
          the PDB file provided. If the PDB file has a single state
          then an `Assembly` will be returned, otherwise an
          `AmpalContainer` will be returned.