code: def load_cache(dpath, fname, cfgstr, ext='.cPkl', verbose=None, enabled=True):
      
      if verbose is None:
          verbose = VERBOSE_CACHE
      if not USE_CACHE or not enabled:
          if verbose > 1:
              print('[util_cache] ... cache disabled: dpath=%s cfgstr=%r' %
                      (basename(dpath), cfgstr,))
          raise IOError(3, 'Cache Loading Is Disabled')
      fpath = _args2_fpath(dpath, fname, cfgstr, ext)
      if not exists(fpath):
          if verbose > 0:
              print('[util_cache] ... cache does not exist: dpath=%r fname=%r cfgstr=%r' % (
                  basename(dpath), fname, cfgstr,))
          raise IOError(2, 'No such file or directory: %r' % (fpath,))
      else:
          if verbose > 2:
              print('[util_cache] ... cache exists: dpath=%r fname=%r cfgstr=%r' % (
                  basename(dpath), fname, cfgstr,))
          import utool as ut
          nbytes = ut.get_file_nBytes(fpath)
          big_verbose = (nbytes > 1E6 and verbose > 2) or verbose > 2
          if big_verbose:
              print('[util_cache] About to read file of size %s' % (ut.byte_str2(nbytes),))
      try:
          with ut.Timer(fpath, verbose=big_verbose and verbose > 3):
              data = util_io.load_data(fpath, verbose=verbose > 2)
      except (EOFError, IOError, ImportError) as ex:
          print('CORRUPTED? fpath = %s' % (fpath,))
          if verbose > 1:
              print('[util_cache] ... cache miss dpath=%s cfgstr=%r' % (
                  basename(dpath), cfgstr,))
          raise IOError(str(ex))
      except Exception:
          print('CORRUPTED? fpath = %s' % (fpath,))
          raise
      else:
          if verbose > 2:
              print('[util_cache] ... cache hit')
      return data
docs: Loads data using util_io, but smartly constructs a filename