python爬虫——简易天气爬取

通过爬虫，抓取http://www.weather.com.cn的天气信息

功能——输入城市代码，获取当日天气，简单的beautifulsoup和requests实现。（城市代码可百度查询，不全部展示）

代码如下：

from bs4 import BeautifulSoupimport requests
 
def get(city):
    citycode = {
    '北京': '',
    '海淀': '',
    '朝阳': '',
    '顺义': '',
    '怀柔': ''
}
    try:
        url = 'http://www.weather.com.cn/weather/'+str(citycode[city])+'.shtml'
        res = requests.get(url)
        print(res)
        res.encoding='utf-8'
        soup = BeautifulSoup(res.text,'lxml')
        day = soup.select('li.on > h1')[0].string
 
        weather = soup.select('p.wea')[0].string
 
        tem = soup.select(' p.tem > i')[0].string
 
        wind= soup.select(' p.win > i')[0].string
 
        content = day+weather+tem+windexcept:
        content = "error"
    return content
 
city = raw_input()
get(city)

效果图：