It is necessary to send a message to the user when the value in the table changes in one column. I found this solution: when starting, read the values of one column (in which changes should occur), write them to a variable, then check them again once a minute, read them again and compare them. If they are different, send a message and write a new value to the variable .
Actually the question is: can it be done faster, less expensive in memory and not inventing bicycles?
python3 and the gspread module are used