import requests
import parsel
import csv
import time

  url = ‘https://weather.mipang.com/changsha/{}yuefen.html‘.format(page)
    headers = {
        ‘User-Agent‘: ‘Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36‘
    }
    response = requests.get(url=url, headers=headers)

    selector = parsel.Selector(response.text)
    trs = selector.css(‘.tb tr‘)

    for tr in trs:
        dit = {}
        date = tr.css(‘td:nth-child(1)::text‘).get()
        dit[‘日期‘] = date
        max_temperature = tr.css(‘td:nth-child(2)::text‘).get()
        dit[‘最高温度‘] = max_temperature
        min_temperature = tr.css(‘td:nth-child(3)::text‘).get()
        dit[‘最低温度‘] = min_temperature
        weather = tr.css(‘td:nth-child(4)::text‘).get()
        dit[‘天气‘] = weather
        wind = tr.css(‘td:nth-child(5)::text‘).get()
        dit[‘风向‘] = wind
        wind_power = tr.css(‘td:nth-child(6)::text‘).get()
        dit[‘风力‘] = wind_power

        if not dit[‘日期‘] == None:
            csv_writer.writerow(dit)
            print(dit)
        else:
            print(None)

f = open(‘天气.csv‘, mode=‘a‘, encoding=‘utf-8-sig‘, newline=‘‘)
csv_writer = csv.DictWriter(f, fieldnames=[‘日期‘, ‘最高温度‘, ‘最低温度‘, ‘天气‘, ‘风向‘, ‘风力‘])
csv_writer.writeheader()

f.close()