Appengine GET parameters

Question

I am not really familiar with Python and am trying to transform one of my php webapps to python. Currently I am running the app on localhost using the appengine launcher and this is what I am trying to do.

I am trying to get a list of all the parameters posted to the url and then submit them to a page and get its content.

So basically: 1: get the params 2: get contents of a url by submitting those params (the PHP equivalent of curl of file_get_contents)

This is my code so far

from google.appengine.ext import webapp

class MyHandler(webapp.RequestHandler):
    def get(self):
        name1 = self.request.get_all("q")
        name2 = self.request.get_all("input")
        return name1,name2

x = MyHandler()
print x.get() 

and the url

http://localhost:8080/?q=test1&input=test2

and this is the error I get

AttributeError: 'MyHandler' object has no attribute 'request'

Now I cant get it to print anything and I am not sure how I can get the contents of another url by submitting name1 and name2

I have tried looking at the documentation but I cant make sense of it since all they have is just 2 lines of code to get the use of function started.

Answer 1

x = MyHandler()
print x.get() 

This is not a typical part of an AppEngine app. You don't use print to return output to the browser.

When you create a new app in AppEngineLauncher it gives you a skeleton project that looks like this:

from google.appengine.ext import webapp
from google.appengine.ext.webapp import util


class MainHandler(webapp.RequestHandler):
    def get(self):
        self.response.out.write('Hello world!')


def main():
    application = webapp.WSGIApplication([('/', MainHandler)],
                                         debug=True)
    util.run_wsgi_app(application)


if __name__ == '__main__':
    main()

Your app has to be run similarly. You need a main() method that creates a wsgi_app which is in charge of calling your handler. That main() function is called by dev_appserver, assuming your app.yaml file is set up correctly.

def get(self):
    name1 = self.request.get_all("q")
    name2 = self.request.get_all("input")
    self.response.out.write(name1 + ',' + name2)

Should work if you've set up your app correctly.