python attribute error: object has no attribute

Question

I have a class 'UserHandler' that inherits from 'RestHandler', but for some reason it's not inheriting properly as I keep getting a 'AttributeError: 'UserHandler' object has no attribute 'sendJson'' error. I'm running python 2.7 btw.

Code and traceback below:

import json
import webapp2
class RestHandler(webapp2.RequestHandler):
 def dispatch(self):
 #time.sleep(1)
 super(RestHandler, self).dispatch()
 def SendJson(self, r):
 self.response.headers['content-type'] = 'text/plain'
 self.response.write(json.dumps(r))
class UserHandler(RestHandler):
 def post(self):
 r = json.loads(self.request.body)
 user = modelUser.InsertUser(r['email'], r['firebaseUid'], r['firebaseId'])
 r = modelUser.AsDict(user)
 self.sendJson(r)

Traceback:

Traceback (most recent call last):
 File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/runtime/wsgi.py", line 266, in Handle
 result = handler(dict(self._environ), self._StartResponse)
 File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1519, in __call__
 response = self._internal_error(e)
 File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1511, in __call__
 rv = self.handle_exception(request, response, e)
 File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1505, in __call__
 rv = self.router.dispatch(request, response)
 File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1253, in default_dispatcher
 return route.handler_adapter(request, response)
 File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 1077, in __call__
 return handler.dispatch()
 File "main.py", line 25, in dispatch
 super(RestHandler, self).dispatch()
 File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 547, in dispatch
 return self.handle_exception(e, self.app.debug)
 File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.3/webapp2.py", line 545, in dispatch
 return method(*args, **kwargs)
 File "main.py", line 37, in post
 self.sendJson(r)
AttributeError: 'UserHandler' object has no attribute 'sendJson'

Answer 1

The code defined SendJson (uppercase). But subclass call sendJson. (lowercase)

Answer 2

In your last few lines:

class UserHandler(RestHandler):
 def post(self):
 r = json.loads(self.request.body)
 user = modelUser.InsertUser(r['email'], r['firebaseUid'], r['firebaseId'])
 r = modelUser.AsDict(user)
 self.SendJson(r)
 ^
 Should be capitalized

Hope that helps :D

Answer 3

Capitalize the 's' (or better yet, make the function 'S' lowercase)