panel 1.8.0

Version 1.8.0

on Python PyPI

This release brings a wide range of new features, enhancements, and compatibility improvements. Highlights include support for JSCode in ECharts and Tabulator, reworked WebSocket reconnection, and the ability to bundle resources into WASM apps, and numerous bug fixes to improve stability across components and templates. It also includes compatibility updates for Bokeh 3.8 and several improvements for use in Pyodide, JupyterLite, and authentication-based deployments. Many thanks to our returning contributors @dalthviz and @etihwo, a very warm welcome to our new contributors @c-meier and @flxmr and as usual many thanks to our core team including @maximlt, @hoxbro, @ahuang11, @MarcSkovMadsen and @philippjfr.

🚀 Features

• Support for inline JavaScript functions in ECharts and Tabulator via JSCode wrapper (#8162)
• Add support for reconnecting to a session after network disruption (#8120)
• Add support for AVIF images (#8164)
• Add support for bundling local resources into WASM apps (#8181)

✨ Enhancements

• Improve .from_param() behavior and error messages (#8047, #8079)
• Add --reuse-sessions warm option to reduce session cold starts (#8087)
• Enable event dispatch immediately after WebSocket connect (#8101)
• Improve error message display in LiteralInput (#8102)
• Allow hold usage from a thread (#8113)
• Improve uniformity and consistency in Tabulator column configuration (#8127)
• Trigger param.Event correctly on value change (#8148)
• Allow registering external extension_cdn for JS resources (#8175)
• Allow overriding the default_widgets on HoloViews pane (#8186)

🐛 Bug Fixes

• Ensure Terminal resizes correctly (#8109)
• Bundle correct AceEditor version (#8111)
• Remove bokeh-sampledata dependency from Pyodide builds (#8138)
• Correct resource handling when resources are symlinked (#8143)
• Correct behavior when FileDownload resets cursor before reading (#8154)
• Fix handling of NaT values (#8156)
• Apply template design after rendering template (#8155)
• Prevent select-all checkbox from being hidden in Material theme (#8147)
• Fix handling of exclusive bounds in Param widgets (#8165)
• Fix layout of Card headers with row flex mode (#8166)
• Uncap height of children in scrollable Column layouts (#8167)
• Fix errors in ECharts when chart has already been destroyed (#8168)
• Fix Tabulator filter behavior with list-based filters (#8169)
• Allow Card to overflow container (#8170)
• Fix pyodide model syncing (#8174)

⚠️ Deprecations

• Removed panel.io.model.hold (was moved to panel.io.document.hold in 1.6.0) (#8188)
• Deprecated panel.chat.langchain.PanelCallbackHandler (to be removed in 1.9.0) (#8188)

📦 Compatibility & Infrastructure

• Update component versions (#7447)
  • DeckGL version from 9.0.20 to 9.1.14
  • ECharts version from 5.6.0 to 6.0.0
  • KaTeX version from 0.6.0 to 0.16.22
  • Perspective version from 3.6.1 to 3.8.0
  • Plotly version from 3.0.1 to 3.1.0
  • Vega version from 5 to 6.1.2 and vega-lite dependency from 5 to 6.3.0
  • Vizzu version from 0.15 to 0.17.1
• Drop support for Bokeh 3.5 and 3.6 (#8116)
• Full compatibility with Bokeh 3.8 (#8160)

📚 Documentation

• Add guide for using WebSocket comms (#7952)
• Update links for Tabulator (#8126)
• Align component parameter reference documentation (#8152)