帮我写一个用python爬取上海过去10年的天气数据并保存到tianqi.csv文件中的代码

好的，以下是代码：

import requests
from bs4 import BeautifulSoup
import csv

url = "http://www.tianqihoubao.com/lishi/shanghai/month/"

# 创建CSV文件并写入表头
with open("tianqi.csv", "w", newline="", encoding="utf-8-sig") as f:
    writer = csv.writer(f)
    writer.writerow(["日期", "最高气温", "最低气温", "天气", "风向"])

# 爬取过去10年的天气数据
for year in range(2011, 2021):
    for month in range(1, 13):
        if month < 10:
            month = "0" + str(month)
        else:
            month = str(month)
        page_url = url + str(year) + month + ".html"
        response = requests.get(page_url)
        response.encoding = "gbk"
        soup = BeautifulSoup(response.text, "html.parser")
        tr_list = soup.find_all("tr")[1:]
        for tr in tr_list:
            td_list = tr.find_all("td")
            date = td_list[0].text
            temp_high = td_list[1].text
            temp_low = td_list[2].text
            weather = td_list[3].text
            wind = td_list[4].text
            # 将数据写入CSV文件
            with open("tianqi.csv", "a", newline="", encoding="utf-8-sig") as f:
                writer = csv.writer(f)
                writer.writerow([date, temp_high, temp_low, weather, wind])

希望能帮到你！