[Bug]: Pillow 11.3 raises a deprecation warning when using TkAgg #30280
Description
Bug summary
The 'mode' parameter from Image.fromarray has been deprecated, which is used in matplotlib to plot figures using the tkinter backend.
Code for reproduction
# python -Wd
import matplotlib
from matplotlib import pyplot
matplotlib.use("tkagg")
pyplot.subplots()Actual outcome
DeprecationWarning: 'mode' parameter is deprecated and will be removed in Pillow 13 (2026-10-15)
Expected outcome
No deprecation warning
Additional information
No response
Operating system
Ubuntu (this bug is also present on Windows)
Matplotlib Version
3.10.3 (pillow==11.3.0)
Matplotlib Backend
TkAgg
Python version
Python 3.12.4
Jupyter version
No response
Installation
None