The httplib module
This module provides an HTTP client interface.
Example: Using the httplib module
# File: httplib-example-1.py import httplib USER_AGENT = "httplib-example-1.py" class Error: # indicates an HTTP error def __init__(self, url, errcode, errmsg, headers): self.url = url self.errcode = errcode self.errmsg = errmsg self.headers = headers def __repr__(self): return ( "<Error for %s: %s %s>" % (self.url, self.errcode, self.errmsg) ) class Server: def __init__(self, host): self.host = host def fetch(self, path): http = httplib.HTTP(self.host) # write header http.putrequest("GET", path) http.putheader("User-Agent", USER_AGENT) http.putheader("Host", self.host) http.putheader("Accept", "*/*") http.endheaders() # get response errcode, errmsg, headers = http.getreply() if errcode != 200: raise Error(errcode, errmsg, headers) file = http.getfile() return file.read() if __name__ == "__main__": server = Server("www.pythonware.com") print server.fetch("/index.htm")
Note that the HTTP client provided by this module blocks while waiting for the server to respond. For an asynchronous solution, which among other things allows you to issue multiple requests in parallel, see the examples for the asyncore module.
Posting data to an HTTP server
The httplib module also allows you to send other HTTP commands, such as POST.
Example: Using the httplib module to post data
# File: httplib-example-2.py import httplib USER_AGENT = "httplib-example-2.py" def post(host, path, data, type=None): http = httplib.HTTP(host) # write header http.putrequest("PUT", path) http.putheader("User-Agent", USER_AGENT) http.putheader("Host", host) if type: http.putheader("Content-Type", type) http.putheader("Content-Length", str(len(data))) http.endheaders() # write body http.send(data) # get response errcode, errmsg, headers = http.getreply() if errcode != 200: raise Error(errcode, errmsg, headers) file = http.getfile() return file.read() if __name__ == "__main__": post("www.spam.egg", "/bacon.htm", "a piece of data", "text/plain")
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