Monitoring if a file stopped writing in python

Question

I have a program that keeps writing to a file every second. File writing is happening in a thread parallel to the UI. Due to some hardware issue it stops writing sometimes o

Answer 1

Finally, after tinkering around with timestamp based options, the following seemed to work for me.

try:
    if time.time()-os.stat(filename).st_mtime>6:
        touch(filename)
        raise ValueError("Yikes! Spike")
except ValueError:
    with open('errors.log','a') as log:
        log.write('Spike/App restarting occured at '+ time.strftime(
                "%H:%M:%S")+' on '+datetime.date.today().strftime('%d/%m/%Y')+'\n')
        log.close()
    restart_program()

Earlier, the problem was it would detect that the file stopped writing with the given time interval and continue to satisfy the same.

time.time()-os.stat(filename).st_mtime>6 

But once this condition is satisfied, unless the file timestamp is updated it continues to satisfy this condition and would keep restarting the program. Now in my solution, I 'touched' the file once (touch used from here) the condition is satisfied and now it works as expected.

Thank you all for your inputs.