[SOLVED] How to control the volume of raspberry pi with python 3?

Issue

I have been looking up the web for any reference to control the volume of raspberry pi (b+) with python script . I come up with href="https://stackoverflow.com/questions/41592431/changing-volume-in-python-program-on-raspbery-pi">this thread previously asked but python-alsaaudio doesn't works with python 3 or say in the thonny python idle . So I need to know any correct way to change the volume of pi as per the user input .

Solution

Another way is to control volume through a command line tool. There is a tool for the Alsa command line called amixer:

amixer sset Master 50%

Now you can create a simple python script that runs the above command:

import subprocess


# a value between 0 and 100
volume = 50
command = ["amixer", "sset", "Master", "{}%".format(volume)]
subprocess.Popen(command)

You can change Master to other soundcards. You can get a list of controls:

$ amixer scontrols

Simple mixer control 'Master',0
Simple mixer control 'PCM',0
Simple mixer control 'Line',0
Simple mixer control 'CD',0
Simple mixer control 'Mic',0
Simple mixer control 'Mic Boost (+20dB)',0
Simple mixer control 'Video',0
Simple mixer control 'Phone',0
Simple mixer control 'IEC958',0
Simple mixer control 'Aux',0
Simple mixer control 'Capture',0
Simple mixer control 'Mix',0
Simple mixer control 'Mix Mono',0

Answered By - Masoud Rahimi

Answer Checked By - Candace Johnson (WPSolving Volunteer)