python web application ci cd pipeline python python flask
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creating a continuous integration/continuous deployment (ci/cd) pipeline for a python web application using flask involves several steps. below is a comprehensive tutorial that covers the essential components, including setting up a flask application, using github for version control, and employing a ci/cd tool like github actions for deployment.
prerequisites
1. **basic knowledge of python and flask**: understanding how to create a simple web application with flask.
2. **git and github**: familiarity with git for version control and github for hosting your repository.
3. **ci/cd tool**: in this tutorial, we will use github actions for our ci/cd pipeline, but you can adapt the principles to other tools like jenkins, gitlab ci, etc.
step 1: create a simple flask application
first, let’s create a simple flask application. if you haven’t already, install flask using pip:
next, create a directory for your project and set up a basic flask application.
**directory structure**:
**app.py**:
**requirements.txt**:
step 2: initialize git and create a github repository
initialize a git repository:
create a new repository on github and push your local repository:
step 3: set up github actions for ci/cd
next, you will set up a github actions workflow to automate testing and deployment.
**create the workflow file**:
create a directory called `.github/workflows` and inside it, create a file named `ci-cd.yml`.
**.github/workflows/ci-cd.yml**:
step 4: implement tests (optional)
you can implement tests to ensure that your application works as expected. create a new file called `test_app.py`:
**test_app.py**:
make sure to add this file to your `requirements.txt`:
step 5: commit and push changes
make sure to add your new test file in git and push your changes:
step 6: monitor the ci/cd pipeline
after pushing your changes, navigate to the "actions" tab of your github repository. you should see your workflow running. it will execute the steps de ...
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