Python爬取所有城市的aqi值

概述  # -*- coding: utf-8 -*-# author：baoshanimport requestsfrom bs4 import BeautifulSoupdef get_city_aqi(city_pinyin): url = ‘http://pm25.in/‘+city_pinyin r = requests.get(url, time

 

# -*- Coding: utf-8 -*-# author：baoshanimport requestsfrom bs4 import BeautifulSoupdef get_city_aqi(city_pinyin):    url = ‘http://pm25.in/‘+city_pinyin    r = requests.get(url,timeout=30)    soup = BeautifulSoup(r.text,‘lxml‘)    div_List = soup.find_all(‘div‘,{"class":"span1"})    city_aqi = []    for i in range(8):        div_content = div_List[i]        caption = div_content.find(‘div‘,{"class": "caption"}).text.strip()        value = div_content.find(‘div‘,{"class":"value"}).text.strip()        city_aqi.append((caption,value))    return city_aqidef get_all_citIEs():    url = ‘http://pm25.in/‘    city_List = []    r = requests.get(url,‘lxml‘)    city_div = soup.find_all(‘div‘,{‘class‘:‘bottom‘})[1]    city_link_List = city_div.find_all(‘a‘)    for city_link in city_link_List:        city_name = city_link.text        city_pinyin = city_link[‘href‘][1:]        city_List.append((city_name,city_pinyin))    return city_Listdef main():    city_List = get_all_citIEs()    for city in city_List:        city_name = city[0]        city_pinyin = city[1]        city_aqi = get_city_aqi(city_pinyin)        print(city_name,city_aqi)if __name__ == ‘__main__‘:    main()

 

参考自：小象学院的AQI空气质量指数计算

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