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import uwsgi import psycopg2 def ugreen_wait_callback(conn, timeout=-1): """A wait callback useful to allow uWSGI/uGreen to work with Psycopg.""" while True: state = conn.poll() if state == psycopg2.extensions.POLL_OK: break elif state == psycopg2.extensions.POLL_READ: uwsgi.green_wait_fdread(conn.fileno()) elif state == psycopg2.extensions.POLL_WRITE: uwsgi.green_wait_fdwrite(conn.fileno()) else: raise Exception("Unexpected result from poll: %r", state) # set the wait callback psycopg2.extensions.set_wait_callback(ugreen_wait_callback) def application(env, start_response): start_response('200 Ok', [('Content-type', 'text/html')]) # connect conn = psycopg2.connect("dbname=prova user=postgres") # get cursor curs = conn.cursor() yield "<table>" # run query curs.execute("SELECT * FROM tests") while True: row = curs.fetchone() if not row: break yield "<tr><td>%s</td></tr>" % str(row) yield "</table>" conn.close()
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