I’ve got csv file that stores some info (see screenshot).

with open('items.csv', 'w') as csvfile:
            csvreader = csv.reader(csvfile)
            csvwriter = csv.writer(csvfile)
            for i in range (len(select.values)):
                for row in csvreader:
                    if row[0] == select.values[i]:
                        csvwriter.writerow([row[0], interaction.user.id])

select.values is a list of values, that were chosen by user (for example ['25', '37']). I want to change row[1] of line where ‘row[0]’ is 25 to interaction.user.id (which is an int object) and nothing else. But my code clears .csv file and it leads to further mistakes. How do i fix it?