Question

Is there a way in tornado framework to setup callbacks synchronously.

For eg

print word

self.twitter_request(path= "/search",
    access_token=self.current_user["access_token"],
    callback=self.test,q=word,rpp="100")

And my test function is defined as

def test(self,response):
        print "Test"

In the above request, I have a set of 2 words which is being queried against the twitter api. However, the above request functions synchronously.

I get output as

Query1

Query2

Test

Test

However I want to output as

Query1

Test

Query2

Test

Any ideas how to tweak the above code to achieve what I am intending to do?

Answer 1

If your goal is to have a list of queries executed in order, then you could use the @gen.engine approach to doing your handler ( http://www.tornadoweb.org/documentation/gen.html ). Then you would structure your code something like this:

 @gen.engine
 def doit(self):
     for word in LIST_OF_STUFF:
         print word

         response = yield gen.Task(self.twitter_request, 
                                   path= "/search",
                                   access_token=self.current_user["access_token"],
                                   q=word,rpp="100")

         # do something with response.