我需要匹配所有这些开始标记:
<p>
<a href="foo">
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但不是这些:
<br />
<hr class="foo" />
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我想出了这个,并希望确保我做对了.我只抓住了a-z.
<([a-z]+) *[^/]*?>
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我相信它说:
/,然后我有这个权利吗?更重要的是,你怎么看?
我正在使用谷歌网站检索天气信息,我想在XML标签之间找到值.下面的代码给我一个城市的天气状况,但我无法获得其他参数,如温度,如果可能的话,解释代码中隐含的分离函数的工作:
import urllib
def getWeather(city):
#create google weather api url
url = "http://www.google.com/ig/api?weather=" + urllib.quote(city)
try:
# open google weather api url
f = urllib.urlopen(url)
except:
# if there was an error opening the url, return
return "Error opening url"
# read contents to a string
s = f.read()
# extract weather condition data from xml string
weather = s.split("<current_conditions><condition data=\"")[-1].split("\"")[0]
# if there was an error getting the condition, the city is invalid
if weather == "<?xml version=":
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