Python 3.9 Pygame 混频器频率改变不工作

Question

I am using pygame (version = 2.0.1) in python==3.9.1 in windows OS laptop. I use the pygame.mixer module to play my mp3 file. My code:

from time import sleep
from pygame import mixer

audio_length = 5.184

mixer.init(frequency=26500)
# mixer.init(frequency=44100)
mixer.music.load("Test.mp3")

mixer.music.play()
sleep(audio_length)
mixer.music.stop()

mixer.quit()

The above code works without errors..

This seems to be quite strange because the above code works perfectly fine (with frequency change) in python 3.7 and pygame 1.9.6

I realised this only after i thought about upgrading my python version.

Is this a bug which I have to report? In that case how do I proceed so?

Or... is it just that I'm not following the new way in python 3.9?

In case, the file I used for testing is required, you can download from https://drive.google.com/file/d/1vd7aO5ahFBHfoT97_0RSBU4reNAWseB6/view?usp=sharing

Answer 1

Mixer init expects to also get the size and the channels, so you will have to do it like this:

mixer.init(frequency=26500, size=-16, channels=2)

For more info, see pygame docs: https://www.pygame.org/docs/ref/mixer.html#pygame.mixer.init

Answer 2

This is a known issue that hasn't been resolved as of today.

https://github.com/pygame/pygame/issues/2435