I am trying to select some data from a database in hopes of eventually using it to populate a dynamic page. Before I dive into woven, I was trying to get the following to print selected data directly to a html resource using the following code snippet (or various versions of it). I've only been able to get an empty page though ( <html><body></body></html> ). I'm wondering if maybe the request is getting returned before the callback makes it to the defer? Any ideas? Thanks in advance, -Charles. from twisted.web import resource, server from twisted.enterprise import adbapi dbpool = adbapi.ConnectionPool(<connection stuff>) def getData(data): return dbpool.runQuery("SELECT * FROM some_table WHERE some_column = %s", data) def printResult(data, request): request.write("pre-data") request.write(data) request.write("post-data") request.finish() class myResource(resource.Resource): def render(self, request): d = getData("some string") d.addCallback(printResult, request) return server.NOT_DONE_YET resource = myResource()