Subprocess.call() won’t run kill all, I’m on macOS using python

I am trying to kill an app using killall on macos, but everytime I try to do it, it doesn’t kill the app. I have the right name and all but it still won’t kill the app.

My code:

def KillApp(appName):
    
    """

    This will close a program if the app is open.

    """
    os_name = system()
    
    if os_name == "Darwin":
        
        os_name = "macOS"
    
    if system() == "Windows":
        
        return call(["taskkill", "/f", "/im", appName], shell=True)
    
    elif system() == "Linux":
        
        return call(["killall", appName], shell=True)
    
    elif system() == "macOS":
        
        return call(["killall", appName], shell=True)`

It returns None and doesn’t kill the program.

Answer

subprocess.call() uses the same function signature as the Popen constructor.
The command executed via Popen needs to be passed in different ways depending on shell argument:

• shell=True, the command needs to be a string.
• shell=False,the command needs to be a list.

Examples:

return call(["killall", "-9", appName], shell=False)
return call(f"killall -9 {appName}", shell=True)