On 6 January 2012 12:39, Psi <[email protected]> wrote:
> i am trying to make web site which retrieves query from the user, and
> process it by C++ based searching program. In order to achieve this, I
> used python script which gets the query and send the query to C++
> program by zeromq. However it seems like mod_wsgi cannot import zeromq
> even though it perfectly worked well without mod_wsgi or without
> zeromq
>
> I got an error message like this;
>
> File "D:/wsgi_app/wsgi_app.py", line 2, in <module>, referer:
> http://localhost/
> import zmq, referer: http://localhost/
>
> File "D:\\util\\Python27\\lib\\site-packages\\zmq\\__init__.py", line
> 35, in <module>, referer: http://localhost/
> from zmq.utils import initthreads # initialize threads,
> referer: http://localhost/
>
> ImportError: DLL load failed: \xc1\xf6\xc1\xa4\xb5\xc8
> \xb8\xf0\xb5\xe2\xc0\xbb \xc3\xa3\xc0\xbb \xbc\xf6 \xbe\xf8\xbd
> \xc0\xb4\xcf\xb4\xd9., referer: http://localhost/
>
> The code below shows how I implemented it. Please help me
>
> import site
> site.addsitedir("D:\\util\\Python27\\Lib\\site-packages")
Why are you needing to explicitly add site-packages into sys.path?
This immediately suggests you are doing something wrong as it should
not be necessary.
Is mod_wsgi.so you are using for Python 2.7? Did you install Python
for all users or just the user you installed it as? You are supposed
to install it for all users.
Presuming that zmq module has a C extension component, is that module
compiled as 32 bit for the Python version mod_wsgi is compiled for?
Graham
> from cgi import parse_qs, escape
> import zmq # HERE IS THE ERROR
> def application( # It accepts two arguments:
> # environ points to a dictionary containing CGI like environment
> variables
> # which is filled by the server for each received request from
> the client
> environ,
> # start_response is a callback function supplied by the server
> # which will be used to send the HTTP status and headers to the
> server
> start_response):
>
> # get a query from the webpage :)
> data = parse_qs(environ['QUERY_STRING'])
>
> query = data.get('query', [''])[0]
> query = escape(query) #prevent script injection
>
> context = zmq.Context()
> socket = context.socket(zmq.REQ)
> socket.connect ("tcp://localhost:5555") #connect to C++ search
> server database
> socket.send (query)
>
> # build the response body possibly using the environ dictionary
> response_body = 'The request method was %s' %
> environ['REQUEST_METHOD']
>
> # HTTP response code and message
> status = '200 OK'
>
> # These are HTTP headers expected by the client.
> # They must be wrapped as a list of tupled pairs:
> # [(Header name, Header value)].
> response_headers = [('Content-Type', 'text/plain'),
> ('Content-Length', str(len(response_body)))]
>
> # Send them to the server using the supplied function
> start_response(status, response_headers)
>
> # Return the response body.
> # Notice it is wrapped in a list although it could be any iterable.
> return [response_body]
>
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