Variable displays a live, named value with custom formatting.

Reach for it to track a value that is not the bar's own progress (a loss, a learning rate, a username) updated via bar.update(name=value). format, width, and precision control the rendering.

.. autoclass:: progressbar.widgets.Variable
   :members:
   :show-inheritance:
   :no-index:

.. demo:: widgets/variable

• :doc:`postfix`: several values rendered together as one compact suffix.
• :doc:`dynamic-message`: the original name for this same widget.