TensorFlow 1 version View source on GitHub

Write a scalar summary.

    name, data, step=None, description=None

Used in the notebooks

Used in the guide Used in the tutorials


  • name: A name for this summary. The summary tag used for TensorBoard will be this name prefixed by any active name scopes.
  • data: A real numeric scalar value, convertible to a float32 Tensor.
  • step: Explicit int64-castable monotonic step value for this summary. If omitted, this defaults to tf.summary.experimental.get_step(), which must not be None.
  • description: Optional long-form description for this summary, as a constant str. Markdown is supported. Defaults to empty.


True on success, or false if no summary was written because no default summary writer was available.