Google App Engine app deployment

Question

I'm trying to deploy a basic HelloWorld app on Google Engine following their tutorial for Python. I created a helloworld.py file and an app.yaml file and copied the code from their online tutorial. I signed up for Google App Engine and have tried everything but keep getting the following error:

2015-08-19 19:22:08,006 ERROR appcfg.py:2438 An error occurred processing file '': 
HTTP Error 403: Forbidden Unexpected HTTP status 403. Aborting. 
Error 403: --- begin server output ---
You do not have permission to modify this app (app_id=u'helloworld').
--- end server output ---
If deploy fails you might need to 'rollback' manually.
The "Make Symlinks..." menu option can help with command-line work.
*** appcfg.py has finished with exit code 1 ***

Here is the code from helloworld.py:

import webapp2

class MainPage(webapp2.RequestHandler):
    def get(self):
        self.response.headers['Content-Type'] = 'text/plain'
        self.response.write('Hello, Udacity!')

app = webapp2.WSGIApplication([
   ('/', MainPage),
   ], debug=True)

And here is my code from the app.yaml file:

application: helloworld
version: 1
runtime: python27
api_version: 1
threadsafe: true

handlers:
- url: /.*
  script: helloworld.app

Is there a problem with permissions i.e. Google App's or my laptop's settings? I have tried everything that's out there on stackoverflow so any new suggestions will be much appreciated!!

Answer 1

In my case, I got refused because the appcfg save my ouauth2 token in the file ~/.appcfg_oauth2_tokens, which happen to be another account of appengine . Simply remove the file and try again. It should work. This is in Mac, I am not sure about windows though.

Answer 2

Ok there is a MUCH easier way to do this now.

If you are getting this message "You do not have permission to modify this app" but your id is correct within app.YAML do the following:

Bring up the Google App Engine Launcher on your desktop Click on the control tab on the top left --> "Clear Deployment Credentials"

Thats it!!!