Merge branch 'main' into main

Author: seshan18

CHANGELOG.md

@@ -4,11 +4,15 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## Unreleased
 
+
+## [7.1.0] - 2026-09-15
+
 ### Added
 - 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](https://github.com/plotly/plotly.py/issues/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](https://github.com/plotly/plotly.py/pull/5262)], with thanks to @robertoffmoura for the contribution!
 
 ### Fixed
+- 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](https://github.com/plotly/plotly.py/issues/4291), [#4344](https://github.com/plotly/plotly.py/issues/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](https://github.com/plotly/plotly.py/pull/5285)], with thanks to @robertoffmoura for the contribution!
 - Fix rendering issue causing a too-large div when calling `Figure.show()` in Google Colab [[#5718](https://github.com/plotly/plotly.py/pull/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](https://github.com/plotly/plotly.py/pull/5701)], with thanks to @larsoner for the contribution!
@@ -23,6 +27,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
   - Fix issue with per-point marker color for hover labels in `scattergl`, `quiver` traces [[#8027](https://github.com/plotly/plotly.js/pull/8027)]
   - Update `maplibre-gl` to v6 to address [CVE-2026-85061](https://github.com/advisories/GHSA-jrc7-96c5-q579) [[#8035](https://github.com/plotly/plotly.js/pull/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](https://github.com/plotly/plotly.py/pull/5729)], with thanks to @dylanpulver for the contribution!
 
 ### Fixed
 - Fix `FigureWidget` state synchronization bug where frontend modifications to array properties (like `layout.shapes`) failed to properly update the Python property cache and occasionally surfaced `Undefined` objects [[#5689](https://github.com/plotly/plotly.py/issues/5689)]

CITATION.cff

@@ -9,7 +9,7 @@ authors:
 - family-names: "Parmer"
   given-names: "Chris"
 title: "An interactive, open-source, and browser-based graphing library for Python"
-version: 7.0.0
+version: 7.1.0
 doi: 10.5281/zenodo.14503524
-date-released: 2026-08-25
+date-released: 2026-09-15
 url: "https://github.com/plotly/plotly.py"

RELEASE.md

@@ -5,12 +5,27 @@
 
 This is the release process for releasing plotly.py version `X.Y.Z`, including changelogs, GitHub release and forum announcement.
 
+### Prerequisites
+
+Ensure you have the following installed:
+
+* `uv>=0.12.15`
+* `twine>=7.0.0`
+* A virtual environment: `uv venv`
+
+### Prepare local environment
+
+* `git switch main && git pull`
+* `git status`: ensure your working tree is clean
+* `uv pip install -e ".[dev_optional]"`
+* `cd js && npm ci && cd ..`
+
 ### Finalize changelog
 
 Review the contents of `CHANGELOG.md` under the **Unreleased** header. We try to follow
 the [keepachangelog](https://keepachangelog.com/en/1.0.0/) guidelines.
 
-**Note: You don't need to update the header itself with the new version number,
+**Note: You don't need to update the "Unreleased" header with the new version number,
 as that will be done automatically as part of the next step.**
 
 Use the `Added`, `Changed`, `Deprecated`, `Removed`, `Fixed`, and `Security`
@@ -44,7 +59,7 @@ a link to the plotly.js CHANGELOG.
 
 - Commit and push the changed files to the release branch:
     ```sh
-    $ git add -u
+    $ git add -A
     $ git commit -m "version changes for vX.Y.Z"
     $ git push
     ```
@@ -117,6 +132,7 @@ You must first install [Twine](https://pypi.org/project/twine/) (`pip install tw
 Publishing to PyPI:
 ```bash
 (plotly_dev) $ cd path/to/output
+(plotly_dev) $ twine check plotly-X.Y.Z*
 (plotly_dev) $ twine upload plotly-X.Y.Z*
 ```
 

_plotly_utils/colors/__init__.py

@@ -76,6 +76,7 @@
 
 import decimal
 from numbers import Number
+from warnings import warn
 
 from _plotly_utils import exceptions
 
@@ -763,15 +764,29 @@ def hex_to_rgb(value):
         '#FFF'    --> (255, 255, 255)
 
     """
+
+    input_value = value
     value = value.lstrip("#")
     if len(value) == 3:
         value = "".join(c * 2 for c in value)
-    hex_total_length = len(value)
-    rgb_section_length = hex_total_length // 3
-    return tuple(
-        int(value[i : i + rgb_section_length], 16)
-        for i in range(0, hex_total_length, rgb_section_length)
-    )
+    elif len(value) == 4:
+        warn(
+            "4-character hex color provided; 4th character will be ignored."
+            "got {!r}".format(input_value)
+        )
+        value = "".join(c * 2 for c in value)[:6]
+    elif len(value) == 8:
+        warn(
+            "8-character hex color provided; last two characters will be ignored."
+            "got {!r}".format(input_value)
+        )
+        value = value[:6]
+    elif len(value) != 6:
+        raise ValueError(
+            "hex color must be 3 or 6 hex digits, optionally prefixed with "
+            "'#'; got {!r}".format(input_value)
+        )
+    return tuple(int(value[i : i + 2], 16) for i in range(0, 6, 2))
 
 
 def colorscale_to_colors(colorscale):

js/package-lock.json

@@ -1,7 +1,7 @@
 {
   "name": "jupyterlab-plotly",
   "main": "lib/mimeExtension.js",
-  "version": "7.0.0",
+  "version": "7.1.0",
   "repository": {
     "type": "git",
     "url": "https://github.com/plotly/plotly.py"

js/package.json

@@ -149,7 +149,7 @@ def _is_continuous(df: nw.DataFrame, col_name: str) -> bool:
         # fastpath for pandas: Narwhals' Series.dtype has a bit of overhead, as it
         # tries to distinguish between true "object" columns, and "string" columns
         # disguised as "object". But here, we deal with neither.
-        return df_native[col_name].dtype.kind in "ifc"
+        return df_native[col_name].dtype.kind in "iufc"
     return df.get_column(col_name).dtype.is_numeric()
 
 

plotly/express/_core.py

@@ -1,7 +1,7 @@
 {
   "name": "jupyterlab-plotly",
   "main": "lib/mimeExtension.js",
-  "version": "7.0.0",
+  "version": "7.1.0",
   "repository": {
     "type": "git",
     "url": "https://github.com/plotly/plotly.py"
@@ -33,7 +33,7 @@
     "outputDir": "../plotly/labextension",
     "webpackConfig": "./webpack.config.js",
     "_build": {
-      "load": "static/remoteEntry.9e3b944395b758da.js",
+      "load": "static/remoteEntry.1dda3c8f6e5cd2a3.js",
       "mimeExtension": "./mimeExtension"
     }
   }