用python写个天猫网站爬虫程序

好的，这是一个简单的天猫网站爬虫程序的例子：

import requests
from bs4 import BeautifulSoup

def tmall_spider(page):
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.82 Safari/537.36'
    }
    url = 'https://www.tmall.com/?spm=a220m.1000858.0.0.72d91caaaG1hKs&page=' + str(page)
    res = requests.get(url, headers=headers)
    soup = BeautifulSoup(res.text, 'html.parser')
    items = soup.select('div.product')
    for item in items:
        title = item.select_one('p.productTitle').text
        price = item.select_one('p.productPrice').text
        print(title, price)

if __name__ == '__main__':
    for i in range(1, 3):
        tmall_spider(i)

这个程序使用了`requests`和`beautifulsoup4`库，它将爬取天猫网站前2页的商品名称和价格。