如何网页抓取并将其转换为csv文件？

1. 导入必要的库：requests、BeautifulSoup和csv

import requests from bs4 import BeautifulSoup import csv

2. 使用requests库获取网页内容并解析出需要的信息

url = "http://example.com" response = requests.get(url) soup = BeautifulSoup(response.content, "html.parser") data_list = []

table = soup.find("table") rows = table.find_all("tr")

for row in rows: cols = row.find_all("td") cols = [col.text.strip() for col in cols] data_list.append(cols)

3. 创建csv文件并将数据写入其中

with open("example.csv", "w", newline="") as output: writer = csv.writer(output) writer.writerows(data_list)

完成后，会生成名为"example.csv"的csv文件，其中包含从网页上抓取的数据。