python获取网页状态码示例
代码很简单，只需要2行代码就可实现想要的功能，虽然很短，但确实使用，主要使用了requests库。
测试2XX, 3XX, 4XX, 5XX都能准确识别。
#coding=utf-8
import requests
def getStatusCode(url):
r = requests.get(url, allow_redirects = False)
return r.status_code
print getStatusCode('http://www.jb51.net/')
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