Python爬虫怎样使用CSV存储数据_Python爬虫将抓取结果保存为CSV文件方法

import csv
import requests
from bs4 import BeautifulSoup
<h1>模拟请求网页</h1><p>url = "<a href="https://www.php.cn/link/ebae6bc5deeca109d899c4ec7d9d30c0">https://www.php.cn/link/ebae6bc5deeca109d899c4ec7d9d30c0</a>"
response = requests.get(url)
soup = BeautifulSoup(response.text, 'html.parser')</p><h1>提取数据（示例）</h1><p>products = []
for item in soup.find<em>all('div', class</em>='product'):
name = item.find('h2').text.strip()
price = item.find('span', class_='price').text.strip()
link = item.find('a')['href']
products.append([name, price, link])</p><h1>写入CSV文件</h1><p>with open('products.csv', 'w', newline='', encoding='utf-8') as f:
writer = csv.writer(f)</p><h1>写入标题</h1><pre class='brush:python;toolbar:false;'>writer.writerow(['Name', 'Price', 'Link'])
# 写入每条数据
writer.writerows(products)

import pandas as pd
<h1>假设数据是字典列表</h1><p>data = [
{'Name': '手机', 'Price': '¥2999', 'Link': '<a href="https://www.php.cn/link/3688bc5db453523746c83fbedd11a267">https://www.php.cn/link/3688bc5db453523746c83fbedd11a267</a>'},
{'Name': '耳机', 'Price': '¥199', 'Link': '<a href="https://www.php.cn/link/3cd9fd588c126cc9043850408c2c19ab">https://www.php.cn/link/3cd9fd588c126cc9043850408c2c19ab</a>'}
]</p><h1>转为DataFrame并保存</h1><p>df = pd.DataFrame(data)
df.to_csv('products_pandas.csv', index=False, encoding='utf-8-sig')</p>

try:
    with open('data.csv', 'w', newline='', encoding='utf-8') as f:
        writer = csv.writer(f)
        writer.writerow(['Title', 'URL'])
        for item in items:
            title = item.get('title', '未知')
            url = item.get('url', '')
            writer.writerow([title, url])
except Exception as e:
    print(f"保存文件出错: {e}")