FAQ
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How to make the input form not disappear after submission, and can continue to receive input?
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You can consider the :doc:`pin <./pin>` module. It achieves persistent input by pinning input widgets to the page.


How to output an input widget such as a search bar?
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You can consider the :doc:`pin <./pin>` module.


Why the callback of ``put_buttons()`` does not work?
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You might use the old version of PyWebIO, upgrade it to the latest version or see `the old document <https://pywebio.readthedocs.io/en/v1.3.3/FAQ.html>`_

Why I cannot download the file using ``put_file()``?
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The reason is the same as above.