plotly/plotly.py v7.1.0 on GitHub

Support marginal_x/marginal_y="heatmap" in density_heatmap, drawing a single-row/column heatmap strip in the margin colored by the same z/histfunc aggregate as the main plot and sharing its color scale [#5706], with thanks to @lucasjamar for the contribution!
Add support for custom tick values in mpl_to_plotly when the matplotlib tick positions don't follow an arithmetic progression, including custom tick labels and tick values on date axes [#5262], with thanks to @robertoffmoura for the contribution!

Fix Plotly Express treating unsigned integer columns (uint8, uint16, uint32, uint64) in pandas DataFrames as categorical, which caused px.bar and other functions to pick the wrong orientation and render unexpected plots [#4291, #4344], with thanks to @Belagum for the contribution!
Fix mpl_to_plotly not setting paper_bgcolor and plot_bgcolor from the matplotlib figure and axes backgrounds, so converted figures match the source figure's background colors [#5285], with thanks to @robertoffmoura for the contribution!
Fix rendering issue causing a too-large div when calling Figure.show() in Google Colab [#5718]
Fix the sphinx-gallery scraper so that it generates thumbnails for figures shown with fig.show() or displayed as the last expression of a code block [#5701], with thanks to @larsoner for the contribution!
- The scaper now warns once (instead of failing the build) when static image export is unavailable
The sphinx-gallery scraper no longer scrapes files belonging to other examples during parallel builds [#5701], with thanks to @larsoner for the contribution!

Update plotly.js from version 4.0.0 to version 4.1.1 [#5722, #5730]. See the plotly.js release notes for v4.1.0 and v4.1.1 for details. Notable changes include:
- Add an opt-in modebar button for downloading Plotly figures as JSON [#7990, #8022]
- Add legend.groupdoubleclick to set the group behavior for a legend double-click [#7997]
- Increase default double-click delay threshold to 500ms (from 300) [#8014]
- Fix issue with per-point marker color for hover labels in scattergl, quiver traces [#8027]
- Update maplibre-gl to v6 to address CVE-2026-85061 [#8035]
  - Note: Safari 15, Chrome 56, Firefox 51 and later are now required for map traces
Update hex_to_rgb function to raise error for invalid-length hex codes, and emit warning for hex codes containing alpha [#5729], with thanks to @dylanpulver for the contribution!