How do I change the screen brightness in windows using python?-CodePudding

How do I change the screen brightness in windows using python, without using any extra python packages? I'd also like a way of getting what the screen brightness is currently at. I'm thinking that will need to be by using ctypes, but I can't find any information on how to do it.

CodePudding user response：

by the help of PowerShell commands we can easily increase or decrease the brightness of windows without any external packages

WmiSetBrightness(1,<brightness % goes here>)


import subprocess

subprocess.run(["powershell", "(Get-WmiObject -Namespace root/WMI -Class WmiMonitorBrightnessMethods).WmiSetBrightness(1,40)"])

the subprocess is the internal library that comes with python.

just run the above code, hope this will work.

CodePudding user response：

The another way to do it without any library is:-

import subprocess


def run(cmd):
    completed = subprocess.run(["powershell", "-Command", cmd], capture_output=True)
    return completed

if __name__ == '__main__':
    take_brightness = input("Please enter the brightness level: ")
    command = "(Get-WmiObject -Namespace root/WMI -Class WmiMonitorBrightnessMethods).WmiSetBrightness(1,"   take_brightness   ")"
    hello_command = f"Write-Host {command}"
    hello_info = run(hello_command)

It will work fine and please upvote and accept answer if you like it. Thank You.

CodePudding user response：

Install screen brightness control using pip Windows: pip install screen-brightness-control

Mac/Linux: pip3 install screen-brightness-control I guess

Then use this code

import screen_brightness_control as sbc

sbc.set_brightness(25) # Number will be any number between 0 and hundred
# Sets screen brightness to 25%

I found info on the screen brightness module here

CodePudding user response：

I used the WMI library and it really worked fine. Here is the code, but this is for Windows. I think it is OS specific so if it doesn't work for you, you should look for a better solution.

import wmi
    
brightness = 40 # percentage [0-100] For changing thee screen 
c = wmi.WMI(namespace='wmi')
methods = c.WmiMonitorBrightnessMethods()[0]    
methods.WmiSetBrightness(brightness, 0)

Please upvote and accept the answer if you like it.