python 3.8 - pygame 1.9.6 - camera.init() - SystemError: bad call flags

[kiwi-x]

Hello,

I'm running Manjaro (Arch) and when I try to initialize the camera object it breaks:

 % python
Python 3.8.1 (default, Jan  8 2020, 23:09:20) 
[GCC 9.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pygame
pygame 1.9.6
Hello from the pygame community. https://www.pygame.org/contribute.html
>>> import pygame.camera
>>> 
>>> pygame.init()
(6, 0)
>>> pygame.camera.init()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.8/site-packages/pygame/camera.py", line 44, in init
    from pygame import _camera
SystemError: bad call flags
>>> 

I tried it on different systems (manjaro current and testing) with different cameras (two notebooks with internal cameras and a desktop pc with attached usb camera). I tried different pygame versions (down to 1.9.4) which is the current one on my raspberry pi. But my pi uses python 3.7, I think..

Many thanks
kiwi-x

[snowsignal]

I have the exact same issue.

[kiwi-x]

I just read that python 3.8 support will come with pygame 2. So I just tried it against pygame 2.0 dev 6 but there is the same issue:

~ % python
Python 3.8.1 (default, Jan 22 2020, 06:38:00) 
[GCC 9.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pygame
pygame 2.0.0.dev6 (SDL 2.0.10, python 3.8.1)
Hello from the pygame community. https://www.pygame.org/contribute.html
>>> import pygame.camera
>>> pygame.camera.init()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.8/site-packages/pygame/camera.py", line 44, in init
    from pygame import _camera
SystemError: bad call flags
>>> 

Regards
kiwi-x

[flaambe]

@kiwi-x I think this issue was fixed by PR #1484. Just tested current master branch dev7, no error

>>> import pygame
pygame 2.0.0.dev7 (SDL 2.0.10, python 3.8.2)
Hello from the pygame community. https://www.pygame.org/contribute.html
>>> import pygame.camera
>>> pygame.camera.init()
>>> 

[vguttmann]

@kiwi-x @flaambe Still have the issue, at least if I just run

pip install pygame

[kiwi-x]

@vguttmann I think we have to wait for the next release (2.0.0.dev7 or later)

[MyreMylar]

If any of you are on windows, you might also want to make sure you have the VideoCapture library.

Available here: https://www.lfd.uci.edu/~gohlke/pythonlibs/#videocapture

Last I checked the camera module won't work without it on windows.

[kiwi-x]

With pygame 2.0.0.dev8 - this issues is solved - Thank you very much!