核心功能 - 智能天气信息

国家气象局网站提供获取天气预报的 API，直接返回 json 格式的天气数据。所以只需要从 json 里取出对应的字段就可以了。

下面是指定城市(县、区)天气的网址，直接打开网址，就会返回对应城市的天气数据。比如：

http://www.weather.com.cn/data/cityinfo/101021200.html 上海徐汇区对应的天气网址。

实现代码

import requests 


import json 


import logging as log 


 


def get_weather_wind(url): 


    r = requests.get(url) 


    if r.status_code != 200: 


        log.error("Can't get weather data!") 


    info = json.loads(r.content.decode()) 


 


    # get wind data 


    data = info['weatherinfo'] 


    WD = data['WD'] 


    WS = data['WS'] 


    return "{}({})".format(WD, WS) 


 


def get_weather_city(url): 


    # open url and get return data 


    r = requests.get(url) 


    if r.status_code != 200: 


        log.error("Can't get weather data!") 


 


    # convert string to json 


    info = json.loads(r.content.decode()) 


 


    # get useful data 


    data = info['weatherinfo'] 


    city = data['city'] 


    temp1 = data['temp1'] 


    temp2 = data['temp2'] 


    weather = data['weather'] 


    return "{} {} {}~{}".format(city, weather, temp1, temp2) 


 


if __name__ == '__main__': 


    msg = """**天气提醒**:   


 


{} {}   


{} {}   


 


来源: 国家气象局 


""".format( 


    get_weather_city('http://www.weather.com.cn/data/cityinfo/101021200.html'), 


    get_weather_wind('http://www.weather.com.cn/data/sk/101021200.html'), 


    get_weather_city('http://www.weather.com.cn/data/cityinfo/101020900.html'), 


    get_weather_wind('http://www.weather.com.cn/data/sk/101020900.html') 


) 


    print(msg)