Python中如何获取HTTP请求的状态码（如200、404等）

Python 实用脚本清单 : http://www.revotu.com/python-practical-script-list.html

http 不只有 get 方法（请求头部+正文），还有 head 方法，只请求头部。


import httplib

def get_status_code(host, path="/"):
“”" This function retreives the status code of a website by requesting
HEAD data from the host. This means that it only requests the headers.
If the host cannot be reached or something else goes wrong, it returns
None instead.
“”"
try:
conn = httplib.HTTPConnection(host)
conn.request(“HEAD”, path)
return conn.getresponse().status
except StandardError:
return None

print get_status_code(“www.v2ex.com”) # prints 200
print get_status_code(“www.v2ex.com”, “/nonexistant”) # prints 404