code: def _escape_path(key):
      '''
      Replace '/', '\\' in key
      '''
      return _tobytes(key).replace(b'$', b'$_').replace(b'/', b'$+').replace(b'\\', b'$$'f _escape_path(key):
      '''
      Replace '/', '\\' in key
      '''
      return _tobytes(key).replace(b'$', b'$_').replace(b'/', b'$+').replace(b'\\', b'$$')
docs: Replace '/', '\\' in key