小菜试写了一个python获取天气预报的脚本

这几天在看python网络编程基础，第6章和第7章介绍了获取web内容和解析html，自己找东西实践了一下

#!/usr/bin/python
#conding:utf-8

import sys,re,urllib2,datetime
from HTMLParser import HTMLParser

class main(HTMLParser):
    def __init__(self):
        HTMLParser.__init__(self)
        self.tarsum = ['td','th','br']
        self.readingtitle = 0
        self.curtag = None
        self.curattrs = 0
        self.marktag = None
        self.result = {}
        self.timeclock = 0
        for i in range(0,7):
            self.result[datetime.date.today() + datetime.timedelta(days=i)] = []


    def handle_starttag(self,tag,attrs):
        self.curtag = tag
        self.curattrs = len(attrs)
        if tag == 'table' and len(attrs) == 7:
            self.readingtitle = 1
            self.marktag = tag
        if self.readingtitle == 1:
            if tag == 'tr':
                self.timeclock = -2
            elif tag == 'td':
                self.timeclock += 1



    def handle_data(self,data):
        if self.curtag in self.tarsum and self.curattrs == 0 and self.readingtitle == 1:
            days =  datetime.date.today() + datetime.timedelta(days=self.timeclock)
            self.result[days].append(data.strip())

    def handle_endtag(self,tag):
        if tag == self.marktag:
            self.readingtitle = 0

    def getvalue(self):
        return self.result

if __name__ == '__main__':
    url = urllib2.urlopen('http://qq.ip138.com/weather/guangdong/GuangZhou.htm')
    strhtml = url.read()
    strhtml = unicode(strhtml, 'gb2312','ignore').encode('utf-8','ignore')
    tp = main()
    tp.feed(strhtml)
    for key,value in tp.getvalue().items():
        print key,
        for a in value:
            print a,
        print

结果如下：