Google App Engine is a PAAS offering from Google Cloud Platform, which enables you to build complex web solutions with significant ease without worrying too much about the scalability or infrastructure management. Glimpse through our presentation as we explain how to build GAE apps using pycharm with debugging enabled. To know more click here https://www.talentica.com/blogs/setting-up-development-environment-for-google-app-engine-and-python/ Know About Talentica - Talentica Software is an innovative outsourced product development company that helps startups build their own products. We help technology companies transform their ideas into successful products by partnering in their roadmap from pre-funded startups to a profitable acquisition. We have successfully built core intellectual property for more than 100 customers so far. We have the deep technological expertise, proven track record, and unique methodology to build products successfully. Our customers include some of the most innovative product companies in the USA, Europe, and India. To know more about how Talentica have helped startups grow click here https://www.talentica.com/work.html To know more about Talentica click here https://www.talentica.com/ To get in touch with us click here https://www.talentica.com/contact.htm

1. SETTING UP DEVELOPMENT ENVIRONMENT
FOR GOOGLE APP ENGINE AND PYTHON

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• Introduction
• Installing GAE SDK
• Make Autocomplete Work For GAE SDK In Pycharm
• Scaffolding Basic GAE App
• Enable Debugging
INDEX

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INTRODUCTION
• Google App Engine is a PAAS offering from Google Cloud Platform, which enables
you to build complex web solutions with significant ease without worrying too
much about the scalability or infrastructure management
• If you want to develop GAE applications using python and looking for a way to
setup your development environment then this post is for you

4. Copyright © 2018 Talentica Software (I) Pvt Ltd. All rights reserved.
• This is the easiest part, I am using the windows machine, so I
can simply grab the installer from this link and then install it
following the installation wizard like you have done million
times already
• PyCharm community edition does not come with GAE
support out of the box, so you need to make changes here
and there to make it work for you
INSTALLING GAE SDK

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MAKE AUTOCOMPLETE WORK FOR
GAE SDK IN PYCHARM
• Typically when you start building an application in python, you start with setting up a virtual environment,
however when you are building GAE application, setting up virtual environment seems an overkill to me, since
GAE in itself works like a container and ensures isolation
• You can also not install GAE packages using pip since those get installed in your machine when you install
SDK
• The most straightforward way to make GAE packages available to PyCharm is, by setting a hard symlink from
GAE packages directory to python site packages directory
To do this you need to open command prompt in elevated access mode (run as admin) and execute following
commands:
mklink /J "C:Python27Libsite-packagesgoogle" "C:Program Files
(x86)Googlegoogle_appenginegoogle"

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• GAE application needs a few config files in order to get insights about your
project and configure it during deployment in GAE
• You can very well create these files manually following the GAE documentation,
but I find this easier to generate a basic project structure using Google App
Engine Launcher, which gets installed with GAE SDK
• Open the GAE Launcher, go to File->Create New Application, enter application
name and create the application. Do not run the application from GAE launcher,
we were only interested in the generated files
• Now go to the root directory of the generated application, change the name to
whatever you want to name your project and open this directory in PyCharm
SCAFFOLDING BASIC GAE APP

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In order to debug you GAE application, you need to perform following
steps:
• Go to Run -> Edit Configurations
• Click on the + symbol to add new configuration and select Python
• Enter a name which you can remember like “Execute_GAE”
• In the Script section enter C:Program Files
(x86)Googlegoogle_appenginedev_appserver.py, change the path to point to your
machines GAE installation path
• In the Script parameters section enter --automatic_restart=no --
max_module_instances="default:1"
• In the Working directory section enter the path of the root directory of your project(the
one with the app.yaml in it)
• Tick the share checkbox, it will create a idea configuration file in .idea directory
• Ensure that under File -> Settings -> Build, Execution, Deployment -> Python Debugger
you have Attach to subprocess automatically while debugging option enabled
ENABLE DEBUGGING

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CONCLUSION
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