AttributeError: 'numpy.ndarray' object has no attribute 'tostring'

[pitrou]

I've installed camset locally using pipx on Ubuntu 24.04, but I now get these exceptions when trying to view the camera feed:

Traceback (most recent call last):
  File "/home/antoine/.local/share/pipx/venvs/camset/lib/python3.12/site-packages/camset/cam_window.py", line 71, in show_frame
    pixbuf = GdkPixbuf.Pixbuf.new_from_data(frame.tostring(),
                                            ^^^^^^^^^^^^^^
AttributeError: 'numpy.ndarray' object has no attribute 'tostring'
/home/antoine/.local/share/pipx/venvs/camset/lib/python3.12/site-packages/camset/cam_window.py:27: Warning: Source ID 4065 was not found when attempting to remove it
  GLib.source_remove(self.run_id)

[pitrou]

Here is the list of installed packages:

$ /home/antoine/.local/share/pipx/venvs/camset/bin/python3 -m pip list
Package       Version
------------- ---------
camset        0.0.21
numpy         2.3.1
opencv-python 4.11.0.86
pip           25.1.1
pycairo       1.28.0
PyGObject     3.52.3

[pitrou]

Looks like it was removed in NumPy 2.3, downgrading to 2.2.6 works around the issue (until the next time pipx upgrades all dependencies).
https://numpy.org/doc/2.2/reference/generated/numpy.ndarray.tostring.html

[limes007]

See pull request #30