爬取北京新发地菜价代码

以下是一个简单的爬取北京新发地菜价的Python代码示例：

import requests
from bs4 import BeautifulSoup

def get_caijia():
    url = 'http://www.xinfadi.com.cn/marketanalysis/0/list/1.shtml'
    headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3'}
    response = requests.get(url, headers=headers)
    response.encoding = 'utf-8'
    soup = BeautifulSoup(response.text, 'html.parser')
    table = soup.find('table', class_='hq_table')
    rows = table.find_all('tr')
    
    for row in rows[1:]:
        cols = row.find_all('td')
        name = cols[0].text.strip()
        low_price = cols[1].text.strip()
        avg_price = cols[2].text.strip()
        high_price = cols[3].text.strip()
        gui_ge = cols[4].text.strip()
        date = cols[5].text.strip()
        
        print(f'品名：{name}\t最低价：{low_price}\t平均价：{avg_price}\t最高价：{high_price}\t规格：{gui_ge}\t日期：{date}')

if __name__ == '__main__':
    get_caijia()

运行上述代码，可以输出北京新发地的菜价信息。需要安装requests和beautifulsoup库来运行这段代码