For long running processes in Google colab, I will find it useful if there is some audio alert indicating end of processing. This processing often runs into hours. So I move-on to other errands, while doing those I don't want to be distracted checking in once in a while if the processing is completed. You can also use some chime like alerts here…

AudioAlertForLongColabProcesses.py

#For long running processes in Google colab, I will find it useful if there is some audio alert indicating end of processing.
#This processing often runs into hours. So I move-on to other errands.
#while doing those I don't want to be distracted checking in once in a while if the processing is completed.Hence the alert.
#You can also use some chime like alerts here, but with all the devices in the house including my laptop 
#chiming all the time because of notifications. I would prefer this to be very specific, hence the voice prompt.


from gtts import gTTS
from IPython.display import Audio
import time

sound_file = 'processing_completed.wav'
TIME_INTERVAL_BETWEEN_VOICE_ALERTS_IN_SECONDS = 30
tts = gTTS('Processing Completed')
tts.save(sound_file)


try:
  while True:
    audio = Audio(sound_file, autoplay=True)
    display(audio)
    time.sleep(TIME_INTERVAL_BETWEEN_VOICE_ALERTS_IN_SECONDS)  #re-alert after 30 seconds
except KeyboardInterrupt:
  print('End')