Sound alarm when code finishes

On Windows

import winsound
duration = 1000  # milliseconds
freq = 440  # Hz
winsound.Beep(freq, duration)

Where freq is the frequency in Hz and the duration is in milliseconds.

import os
duration = 1  # seconds
freq = 440  # Hz
os.system('play -nq -t alsa synth {} sine {}'.format(duration, freq))

In order to use this example, you must install sox.

On Debian / Ubuntu / Linux Mint, run this in your terminal:

sudo apt install sox

On Mac, run this in your terminal (using macports):

sudo port install sox

import os
os.system('say "your program has finished"')

import os
os.system('spd-say "your program has finished"')

You need to install the speech-dispatcher package in Ubuntu (or the corresponding package on other distributions):

sudo apt install speech-dispatcher

print('\007')

Plays the bell sound on Linux. Plays the error sound on Windows 10.

This one seems to work on both Windows and Linux* (from this question):

def beep():
    print("\a")

beep()

In Windows, can put at the end:

import winsound
winsound.Beep(500, 1000)

where 500 is the frequency in Herz
      1000 is the duration in miliseconds

To work on Linux, you may need to do the following (from QO's comment):