Develop Reference

Unable to set manual scaling on a google app engine service

I am unable to set manual scaling on a google app engine service (Previously called module). Using python on app engine.
app.yaml:
application: xxx-xxxx
version: 2
runtime: python27
module: xxbackend
instance_class: F4
api_version: 1
threadsafe: true
handlers:
- url: /taskcontroller\.py
script: TaskController.app
so on...
libraries:
- name: webapp2
version: latest
- name: numpy
version: "1.6.1"
- name: PIL
version: latest
inbound_services:
- warmup
xxbackend.yaml:
application: xxx-xxxx
version: uno
module: xxbackend
runtime: python27
api_version: 1
instance_class: B4
manual_scaling:
instances: 5
Even though I have specified instance class and manual scaling settings in xxbackend.yaml, the xxbackend instances are still autoscaled. Can someone point out where I am going wrong?

You have the same module: name is both yamls. app.yaml should not specify a module, so it uses the default module. So remove module: xxbackend from app.yaml. Otherwise, you are overriding the expected config.
Then, when you deploy, use a command like:
appcfg.py update app.yaml xxbackend.yaml
That deploys both updated yaml files.

Django 1.5 on App Engine

I'm having some difficulties setting up Django 1.5 to run via the dev_appserver.py, rather than the manage.py runserver.
The project directory is as such:
env
myproject
manage.py
myproject
init, settings, urls, wsgi (.py)
I've tried to two following ways to get it working with the App Engines appserver:
app.yaml:
application: appname
version: 1
runtime: python27
api_version: 1
threadsafe: true
libraries:
- name: django
version: "1.5"
builtins:
- django_wsgi: on
as suggested from this tutorial https://cloud.google.com/appengine/docs/python/cloud-sql/django
It does not produce any error when setting the up the local server, but when I access the given link, I get this error:
RuntimeError: django must be included in the "libraries:" clause of your app.yaml file when using the django_wsgi builtin.
Next I've tried it in a slightly different way.
With app.yaml
application: myapp
version: 1
runtime: python27
api_version: 1
threadsafe: yes
handlers:
- url: .*
script: main.application
libraries:
- name: django
version: "1.5"
and a main.py as such:
import os
os.environ['DJANGO_SETTINGS_MODULE'] = 'myproject.settings'
import django.core.handlers.wsgi
application = django.core.handlers.wsgi.WSGIHandler()
which produces the following error:
File "C:\Users\Mello\AppEngine\02\myproject\main.py", line 4, in module>
import django.core.handlers.wsgi
ImportError: No module named django.core.handlers.wsgi
Even though if I run
>>>import django.core.handlers.wsgi
>>>
in the same virtual environment, it runs fine.
Anybody has any piece of advice to point me in the right direction to fix this?
Thanks

Can't Use Pycrypto in Google App Engine Production

I am successfully using Pycrypto vs. 2.6 in my GAE development environment under Python 2.7. However, deploying it to Google production I see the following error in the logs:
from Crypto.Cipher import _AES ImportError: cannot import name _AES
My App.Yaml:
application: appname
version: 1
runtime: python27
api_version: 1
threadsafe: yes
handlers:
- url: /favicon\.ico
static_files: favicon.ico
upload: favicon\.ico
- url: .*
script: main.app
secure: always
libraries:
- name: webapp2
version: "2.5.2"
- name: pycrypto
version: "2.6"
The Python call in question:
from Crypto.Cipher import AES
Checking Google support documents and they do list Pycrypto 2.6 as supported. I also tried to enter "latest" for the version and received the same error. Again in development GAE on my local machine it works perfectly.

Issue resolved. I had a directory from my Windows installation called "Crypto" in my App Engine project directory. When the app loader loaded the files it also included this directory which conflicted with what Google has loaded in production. Removal of this directory from the local project directory resolved the problem upon the next push to Google.

Error uploading application Python Google App Engine

I have been trying to upload python Google app engine folder using windows command prompt. I have the app.yaml as well as a python file in the folder. But when I pass the following command in the Command Prompt:
appcfg.py --oauth2 update C:/Path/to/the/folder
I get this error.
appcfg.py: error: Directory does not contain an Project.yaml configuration file.
Where am I wrong and how should I proceed?
This is my app.yaml file:
application: myappid
version: 1
runtime: python27
api_version: 1
threadsafe: true
handlers:
- url: /.*
script: sampleapp.app
libraries:
- name: lxml
version: "latest"

Check your shell syntax. I had this error message also, by not referencing the right project folder. Note the ending slash:
appcfg.py --oauth2 update C:/Path/to/the/folder/

Google App Engine Handler not displaying content

Hi I'm trying to get my Google App Engine application running on local host but I'm getting issues when I try to run it.
This is the code I'm tryng to run:
# helloworld.py
import webapp2
class MainHandler(webapp2.RequestHandler):
def get(self):
#"Test" text is not displayed
self.response.write("Test")
app = webapp2.WSGIApplication([('/', MainHandler)],
debug=True)
#This line prints the content
print "This works fine"
When I run the dev server on localhost I get Code 200 as response but the handler doesn't seems to be executed properly.
Any idea?

Your code looks fine, just make sure your in your app.yaml you have the handlers correct. It should look something like this:
application: helloworld
version: 1
runtime: python27
api_version: 1
threadsafe: yes
handlers:
- url: .*
script: helloworld.app
libraries:
- name: webapp2
version: "2.5.2"
If you haven't done it yet, you should also complete the Getting Started tutorial.

I solved this issue. Using webapp2 library I have to add the folowing code to the *.yaml file:
libraries:
- name: webapp2
version: "2.5.2"