What is the reason in the “write” mode it does not write to the record (an empty file), but in the “append” mode it is being written?

Question

Python

What could be the reason, there is no writing of one of the code blocks in the "write" mode, but there is a recording in the "append" mode? In two blocks with a "for" loop - one block has a record, the other does not. Perhaps this is due to the "try / except" block, perhaps it is impossible to write like this at all, because the record only goes from the last block. Those in the know please advise

with open('job_parser1.csv', "w", newline='') as csv_file:
        csv_writer = writer(csv_file)
        if x==0:
            csv_writer.writerow(['Вакансия', 'Ссылка', 'Уровень заработной платы'])

        for work in works_ua:
            try:
                work_ua_block = work.find('a').text
                links = 'https://www.work.ua' + work.find('a').get('href')
                new_links = str(links[0:-1])
                price = work.find('div').find('b').get_text()
                csv_writer.writerow([work_ua_block, new_links, price])
            except (AttributeError, KeyboardInterrupt):
                pass


        for work in works:
            work_block= work.find('a', class_="ga_listing").text
            links = 'https://rabota.ua' + work.find('a').get('href')
            price_rab_ua = work.find('span', class_="salary").get_text()
            csv_writer.writerow([work_block, links, price_rab_ua])

Answer 1

yes, anything, debugging is necessary - maybe it pops up on interruption, if you study for a long time in debugging, I debug with prints or the same wrights of something by default