Merge pull request #5483 from Mr-Neutr0n/fix-numpy-percentile-issue-5461

Fix numpy 2.4.0 compatibility in create_violin()

Author: camdecoster

CHANGELOG.md

@@ -4,6 +4,10 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## Unreleased
 
+### Fixed
+- Update `numpy.percentile` syntax to stop using deprecated alias [[5483](https://github.com/plotly/plotly.py/pull/5483)], with thanks to @Mr-Neutr0n for the contribution!
+  - `numpy` with a version less than 1.22 is no longer supported.
+
 ## [6.6.0] - 2026-03-02
 
 ### Fixed

plotly/figure_factory/_violin.py

@@ -17,9 +17,9 @@ def calc_stats(data):
     x = np.asarray(data, float)
     vals_min = np.min(x)
     vals_max = np.max(x)
-    q2 = np.percentile(x, 50, interpolation="linear")
-    q1 = np.percentile(x, 25, interpolation="lower")
-    q3 = np.percentile(x, 75, interpolation="higher")
+    q2 = np.percentile(x, 50, method="linear")
+    q1 = np.percentile(x, 25, method="lower")
+    q3 = np.percentile(x, 75, method="higher")
     iqr = q3 - q1
     whisker_dist = 1.5 * iqr
 

pyproject.toml

@@ -39,7 +39,7 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-express = ["numpy"]
+express = ["numpy>=1.22"]
 kaleido = ["kaleido>=1.1.0"]
 dev_core = [
     "pytest",
@@ -54,14 +54,14 @@ dev_build = [
 ]
 dev_optional = [
     "plotly[dev_build]",
+    "plotly[express]",
     "plotly[kaleido]",
     "anywidget",
     "colorcet",
     # fiona>1.9.6 is not compatible with geopandas<1; geopandas>=1 is not compatible with python 3.8
     "fiona<=1.9.6;python_version<='3.8'",
     "geopandas",
     "inflect",
-    "numpy",
     "orjson",
     "pandas",
     "pdfrw",