def static_uniform_row_length(self):
    """The number of values in each row of this partition, if statically known.

    Returns:
      The number of values in each row of this partition as an `int` (if
      statically known); or `None` (otherwise).
    """
    if self._uniform_row_length is not None:
      return tensor_util.constant_value(self._uniform_row_length)
    return None