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Sample flask app to demonstrate a simple python circleci configuration

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Sample Python App - Flask Server

CircleCI Build Status Software License

Description

The sample python flask app here is designed to demonstrate what a typical python CI workflow may look on CircleCI.

You can see the CI pipelines for this application running live on CircleCI.

In this sample config, we have a single workflow build-and-test which will install and cache our required python packages, and then run tests with pytest, a common python testing framework. This config makes use of the Python orb, a package for CircleCI's config language, which makes writing our config shorter, and easier.

Getting Started

If you would like to copy the config.yml and adapt it to your project, be sure to read the comments in the config file to ensure it works for your project. For more details, see the CircleCI configuration reference.

Addtional Sample Configuration Files

Inside the .circleci directory, you will find an extended directory that extends the configuration beyond the default .circleci/config.yml. These configuration files are tested with every pull request to this sample app, so they stay up to date and verified working.

Heroku Deploy

The .circleci/extended/heroku-deploy.yml configuration file extends the default config by adding a job to deploy to heroku via a git push. For more information on how to configure this for your own project, visit the CircleCI docs for more details

Pylint

The .circleci/extended/pylint.yml configuration file extends the default config by adding a step to sample job. The .pylintrc in the project directory is configured to fail the pipeline if any errors are present when linting.

About This App

This sample application is a flask REST server written in python, and utilizes the connexion framework which allows us build and run the service from an OpenAPI/Swagger specification.

Continuous Food Delivery

When you start up the service, you can open this page in your browser to view the available API endpoints.

Swagger UI Screenshot

Front-End

CFD(Continuous Food Delivery) is a sample application that relies on a separate UI framework. If you would like to run this project locally with a complete UI, you can use a valid CFD front-end, such as one of the following sample projects:

Language GitHub Description
Javascript (Vue.js) Link A Javascript Front-End for CFD

Run and Test Locally

If you would like to try this application out locally, you can find runtime instructions below.

Requirements

Python 3.5.2+ OR Docker

Run Local Server

To run the server on a Docker container, please execute the following from the root directory:

docker-compose up --build

If not using docker, to run the server, please execute the following from the root directory:

pip3 install -r run-requirements.txt
python3 -m openapi_server

Tests

To launch the unit tests, use pytest:

pip3 install -r requirements.txt
pytest

If you want to run tests using a live database, use the alternative compose file:

docker-compose -f docker-compose-test.yml up --build --exit-code-from web

Additional Resources

License

This repository is licensed under the MIT license. The license can be found here.

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