code: def _get_classpath():
      
      try:
          orig_cp = os.environ['CLASSPATH']
      except KeyError:
          return []
      expanded_cp = []
      for i in orig_cp.split(os.path.pathsep):
          expanded_cp.extend(_jar_glob(i))
      return expanded_cp
docs: Extract CLASSPATH from system environment as JPype doesn't seem
      to respect that variable.