Python爬虫一共需要爬取65页数据，每页数据的列数不确定。现在我能把每一列的数据抓下来，但是因为列数不确定，写入的文件名就不能确定。问题在于怎么才能把第x列数据写入第x个文件。也就是如何才能动态选择file=的文件名。代码如下：

f_1 = open('fitment/1.txt', 'a') f_2 = open('fitment/2.txt', 'a') f_3 = open('fitment/3.txt', 'a') for i in range(66): pr = random.choice(proxy) url = 'https://*****' + str(i) + '****' page_url = requests.get(url, headers=head, proxies=pr) page_get = page_url.text page_text = BeautifulSoup(page_get, 'lxml') fitment_1 = page_text.find_all('tr', {'class': 'fitment listRowEven'}) for each_tag_1 in fitment_1: td_text_1 = each_tag_1.find_all('td') for x in range(len(td_text_1)+1): print(td_text_1[x].string, file=)

网页的结构类如下，每个tr标签即为一列，具体要抓取的数据位于每个td标签内

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