帮我翻译以下代码value = soup.find_all('input',id="pagecount") page.append(re.findall(r'[0-9]+',value.__str__()))

Sure! Here's the translation of the code:

value = soup.find_all('input', id="pagecount")
page.append(re.findall(r'[0-9]+', value.__str__()))

查找所有标签名为'input'且id属性为'pagecount'的元素，并将其结果赋值给变量`value`。然后，使用正则表达式`re.findall()`在`value.__str__()`的字符串表示中匹配连续的数字，并将结果追加到名为`page`的列表中。

相关问题

import requests from bs4 import BeautifulSoup import threading import time headers = { "User-Agent": 'Mozilla/5.0 (Windows NT 6.1; WOW64) ' 'AppleWebKit/537.36 (KHTML, like Gecko)' 'Chrome/90.0.4430.212 Safari/537.36' } def download(url): start_time = time.time() # 记录开始时间 response = requests.get(url, headers=headers).text soup = BeautifulSoup(response, features='lxml') src = soup.find_all('img') imagesrc = soup.find_all('img', width="100") for s in imagesrc: with open("{}.jpg".format(s.get('alt')), 'wb') as file: image = requests.get(s.get('src')).content file.write(image) print("正在下载" + s.get('alt') + '.jpg') end_time = time.time() # 记录结束时间 print("线程 {} 运行时间为：{} 秒".format(threading.current_thread().name, end_time - start_time)) threads = [] for x in range(10): url = "https://movie.douban.com/top250?start={}&filter=".format(x * 25) thread = threading.Thread(target=download, args=(url,), name="Thread-{}".format(x+1)) threads.append(thread) thread.start() for thread in threads: thread.join()改为单线程

import requests from bs4 import BeautifulSoup import time headers = { "User-Agent": 'Mozilla/5.0 (Windows NT 6.1; WOW64) ' 'AppleWebKit/537.36 (KHTML, like Gecko)' 'Chrome/90.0.4430.212 Safari/537.36' } def download(url): start_time = time.time() # 记录开始时间 response = requests.get(url, headers=headers).text soup = BeautifulSoup(response, features='lxml') src = soup.find_all('img') imagesrc = soup.find_all('img', width="100") for s in imagesrc: with open("{}.jpg".format(s.get('alt')), 'wb') as file: image = requests.get(s.get('src')).content file.write(image) print("正在下载" + s.get('alt') + '.jpg') end_time = time.time() # 记录结束时间 print("运行时间为：{} 秒".format(end_time - start_time)) url_list = [] for x in range(10): url = "https://movie.douban.com/top250?start={}&filter=".format(x * 25) url_list.append(url) for url in url_list: download(url)

data = soup.find('div', {'class': 'report-list report-list__item'}).find_all('div')[1].find_all('table')[0].find_all('tr')[1:-1] AttributeError: 'NoneType' object has no attribute 'find_all'

这个错误提示通常是因为`find()`或`find_all()`方法没有找到指定的标签或属性，返回了`None`对象，而`None`对象并没有`find_all()`方法。

你可以在运行`find()`或`find_all()`方法之前，先判断一下对象是否为`None`，避免这个错误的发生。例如：

data_div = soup.find('div', {'class': 'report-list report-list__item'})
if data_div:
    data_table = data_div.find_all('div')[1].find_all('table')[0]
    if data_table:
        data = data_table.find_all('tr')[1:-1]

这样就可以避免对`None`对象调用`find_all()`方法导致的错误。