I want to use Firebase in my app engine project. I have followed the instructions mentioned in the documentation for using the third party libraries. Whenever I try to import Firebase:
from firebase import firebase
firebase = firebase.FirebaseApplication('ttps://myapp-c1367.firebaseio.com', None)
result = firebase.get('/users', None)
print result
It gives the following error:
Traceback (most recent call last):
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 1535, in __call__
rv = self.handle_exception(request, response, e)
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 1529, in __call__
rv = self.router.dispatch(request, response)
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 1278, in default_dispatcher
return route.handler_adapter(request, response)
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 1102, in __call__
return handler.dispatch()
File "C:\Users\shaizi\PycharmProjects\simpletestapp - MVC\controllers\Handlers.py", line 24, in dispatch
webapp2.RequestHandler.dispatch(self)
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 572, in dispatch
return self.handle_exception(e, self.app.debug)
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 570, in dispatch
return method(*args, **kwargs)
File "C:\Users\shaizi\PycharmProjects\simpletestapp - MVC\controllers\Login.py", line 45, in get
from firebase import firebase
File "C:\Users\shaizi\PycharmProjects\simpletestapp - MVC\lib\firebase\__init__.py", line 3, in <module>
from .async import process_pool
File "C:\Users\shaizi\PycharmProjects\simpletestapp - MVC\lib\firebase\async.py", line 1, in <module>
import multiprocessing
File "C:\Python27\Lib\multiprocessing\__init__.py", line 65, in <module>
from multiprocessing.util import SUBDEBUG, SUBWARNING
File "C:\Python27\Lib\multiprocessing\util.py", line 41, in <module>
from subprocess import _args_from_interpreter_flags
ImportError: cannot import name _args_from_interpreter_flags
Please help. Where am I doing a mistake?
The error is caused by the firebase package importing python's multiprocessing package, which is in turn trying to import the subprocess package.
The Appengine standard runtime environment does not allow subprocess to be imported, as background processes are not allowed on Appengine.
If you want to use Firebase with your app you will have you communicate with it using the REST API, or move your project to a flexible environment or a custom runtime on Compute Engine.