I'm trying to get google app engine to work on my Raspberry Pi. I keep getting this error.
Traceback (most recent call last):
File "main.py", line 26, in <module>
from google.appengine.ext.webapp.mail_handlers import InboundMailHandler
ImportError: No module named google.appengine.ext.webapp.mail_handlers
I downloaded google app engine and then ran these commands:
unzip google_appengine_1.9.40.zip
export PATH=$PATH:/home/pi/google_appengine/
The most trivial solution for such errors is to import the required package into you project directory. but to be honest it is not the best way to resolve this one. you may use Google App Engine SDK which will take care of all that headache, or there are another way you can follow:
Create a folder into your project directory and call it lib
Add all required packages into this folder.
Create a .py file and name it appengine_config.py
Add the below code snippets into this file:
import sys
import os.path
sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'lib'))
appengine_config.py gets loaded every time a new instance is started, and should take care of your modules importing.
Regards.
It appears you're trying to directly execute your main.py as a standalone application, which is not how GAE app code works.
You're supposed to get the development server (from the SDK you downloaded) to execute your app code on your development machine (on GAE it's the GAE infra doing that). See Using the Local Development Server.
Related
I'm testing Google App Engine and trying to run a simple function to upload files to either the Blobstore or Cloud Storage. I'm typing the Python code directly in the Cloud Shell of my instance. The code is failing when I call:
from google.appengine.ext import blobstore
I get the error code:
Traceback (most recent call last):
File "upload_test.py", line 1, in <module>
from google.appengine.api import users
ImportError: No module named 'google.appengine'
Even though the documentation says that: You can use Google Cloud Shell, which comes with git and Cloud SDK already installed, I've tried installing a bunch of libraries:
gcloud components install app-engine-python
pip install google-cloud-datastore
pip install google-cloud-storage
pip install --upgrade google-api-python-client
I'm still getting the same error. How can I get the appengine library to work? Alternatively, is this the wrong method for creating an app that allows the user to upload files?
The google.appengine module is baked into the first-generation Python (2.7) runtime. It's not available to install via pip, in the second-generation (3.7) runtime, or in Cloud Shell.
The only way to use it is by writing and deploying a first-generation App Engine app.
Thanks #Dustin Ingram
I found the answer in this page.
The current "correct" way of uploading to Cloud Storage is to use google.cloud.storage. The tutorial I linked above explains how to implement it.
The impression I have, however, is that this uses twice the bandwidth as the solution via google.appengine. Originally, the front-end would receive an upload url and send the file directly to the Blobstore (or to Cloud Storage). Now the application uploads to the back-end which, in turn, uploads to Cloud Storage.
I'm not too worried, as I will not be dealing with excessively large files, but it seems strange that the ability to upload directly has been discontinued.
In any case, my problem has been solved.
I have done the following, installed google cloud in a local lib folder with pip. Added an appengine_config.py file:
from google.appengine.ext import vendor
vendor.add("lib")
But still get:
ImportError: No module named google.cloud.bigquery
It seems there is some kind of conflict in the google namespace, since other dependendices in the lib folder seems to be possible to import.
If I just override with:
google.cloud.__path__ = ['/Users/okku/dev/MyServer/lib/google/cloud']
Then it works, but some other dependcy failes to be imported in this case google.api_core.
I have been on this for half day now. I cant find whats wrong. Any clues?
I installed the App engine SDK, then did a pip install requests and pip install requests-toolbelt (under VENV). when running the app in the local development server - I get the following error:
ERROR 2017-05-31 18:14:52,315 cgi.py:122] Traceback (most recent call last):
File "/Users/assafshamia/Freebird/Techradar/dev/scraper.py", line 8, in <module>
import requests
ImportError: No module named requests
I followed the steps of installing a 3rd party library (appengine_config.py and install requests under /lib)
what is going on???
I was able to resolve this by adding the following code to my Python app (main.py) in order to access the libraries at /lib:
import sys
sys.path.insert(0, 'lib')
Per the docs, you need to add the requests library code to your application directory. pip install is not enough.
You can include third party Python libraries with your application by
putting the code in your application directory.
Edit:
Additionally:
The include path of the Python module includes your application's root directory, which is the directory containing the app.yaml file. Python modules that you create in your application's root directory are available using a path from the root. Don't forget to create the required init.py files in your sub-directories so that Python recognizes those sub-directories as packages.
Please help me to solve this error? I'm doing this exercise on app engine (https://developers.google.com/appengine/articles/prediction_service_accounts) , but I'm stuck in step 6.2 because I raise this error(When I run the deploy operation, it is successful step 6.1):
: No module named appengine
Traceback (most recent call last):
File "/base/data/home/apps/s~01prediction/1.367567721220366691/main.py", line 29, in
from oauth2client.appengine import AppAssertionCredentials
The error in line 29 :
from oauth2client.appengine import AppAssertionCredentials
Did you run step 3.2? That should have copied some folders into prediction-demo-skeleton. You should have a folder called oauth2client inside prediction-demo-skeleton. Take a look at the folders that are inside prediction-demo-full.
ps: a good practice before deploying is to run your app using the devappserver.
The Google API Python Client now has a pre-packaged ZIP containing all dependencies that might make installation easier. See:
https://code.google.com/p/google-api-python-client/downloads/list
Select google-api-python-client-gae-1.1.zip for download. Unzip this file inside of your AppEngine app directory.
Along the lines of Sebastian's suggestion it generally is a good idea to test locally using the devappserver. In this case you should be able to get past the import issue, however AppAssertionCredentials won't actually be able to generate any access tokens until it is deployed into a production environment, so it will be of limited use for you.
I am trying to use AppEngine TaskQueue API, so I import it like this:
from google.appengine.api import taskqueue
The code works perfectly online. But when I try to run it locally, I get this error:
ImportError: cannot import name taskqueue
I checked the directory of AppEngine and I didn't find the file taskqueue.py which explains the error. Is there any reason why this file isn't included in the AppEngine SDK? And is there anyway to install it locally? I wouldn't trust just copying the file to the folder, because I am sure it depends on tens of other files.
Download and install the current SDK. You're using an older version.
OK, I found the solution for this myself. I just downloaded the latest AppEngine SDK (version 1.4) and it has the taskqueue.