import requests from bs4 import BeautifulSoup url = 'http://www.greenfinancechina.com/zhengcefagui/list-1.html' response = requests.get(url) soup = BeautifulSoup(response.text, 'html.parser') # 获取政策标题和发布时间 policy_list = soup.find_all('div', class_='news-item') for policy in policy_list: title = policy.find('a').text time = policy.find('span', class_='time').text print(title, time)

这段代码可以用来爬取中国绿色金融网站上的政策信息，并将政策标题和发布时间输出到控制台上。

您可以将这段代码保存为一个 Python 文件，然后在终端或者命令行中执行该文件。请注意，为了能够正常运行该代码，您需要安装 requests 和 BeautifulSoup 这两个库。您可以使用以下命令来安装这两个库：

pip install requests
pip install beautifulsoup4

如果您已经安装了这两个库，就可以运行该代码了。运行代码时，可能会遇到一些错误，例如网络连接错误或者解析错误。您可以根据错误提示修改代码或者调整网络设置，以便能够成功爬取政策信息。

相关问题

修改代码，使得li_list的编码格式是utf-8import requests from bs4 import BeautifulSoup url = 'https://www.icbc.com.cn/page/827855918799994880.html' response = requests.get(url=url) page_response = response.text soup = BeautifulSoup(page_response, 'html.parser',from_encoding='utf-8') li_list = soup.select('#mypagehtmlcontent p')

import requests
from bs4 import BeautifulSoup

url = 'https://www.icbc.com.cn/page/827855918799994880.html'
response = requests.get(url=url)
page_response = response.content.decode('utf-8')
soup = BeautifulSoup(page_response, 'html.parser')
li_list = soup.select('#mypagehtmlcontent p')

# 以下为测试代码，可以不用理会
for li in li_list:
print(li.text)

优化这段代码import requests from bs4 import BeautifulSoup url = "https://www.gupang.com/202305/64619.html" response = requests.get(url) soup = BeautifulSoup(response.content, "html.parser") title = soup.find("h1", class_="title").text content = soup.find("div", class_="content").text print(title) print(content)

可以使用以下方法进行优化：

1. 添加异常处理，以防止请求失败或解析失败导致程序崩溃：

import requests
from bs4 import BeautifulSoup

url = "https://www.gupang.com/202305/64619.html"

try:
    response = requests.get(url)
    response.raise_for_status()  # 抛出异常，如果请求失败
except requests.exceptions.RequestException as e:
    print(e)
    sys.exit(1)

soup = BeautifulSoup(response.content, "html.parser")

try:
    title = soup.find("h1", class_="title").text
    content = soup.find("div", class_="content").text
except AttributeError as e:
    print(e)
    sys.exit(1)

print(title)
print(content)

2. 使用`with`语句来管理资源，以确保在使用完文件或网络连接后自动释放资源：

import requests
from bs4 import BeautifulSoup

url = "https://www.gupang.com/202305/64619.html"

try:
    with requests.get(url) as response:
        response.raise_for_status()
        soup = BeautifulSoup(response.content, "html.parser")
        title = soup.find("h1", class_="title").text
        content = soup.find("div", class_="content").text
except (requests.exceptions.RequestException, AttributeError) as e:
    print(e)
    sys.exit(1)

print(title)
print(content)

这种方法可以避免手动关闭连接或文件，而且代码更加简洁。