code: def access(path, mode, user=None):
      
      scheme = parse(path)[0]
      if scheme == 'file' or hdfs_fs.default_is_local():
          return os.access(path, mode)
      if user is None:
          user = common.DEFAULT_USER
      st = stat(path)
      if st.st_uid == user:
          mode <<= 6
      else:
          try:
              groups = common.get_groups(user)
          except KeyError:
              # user isn't recognized on the system.  No group
              # information available
              groups = []
          if st.st_gid in groups:
              mode <<= 3
      return (st.st_mode & mode) == mode
docs: Perform the equivalent of :func:`os.access` on ``path``.