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Python3_flask plugin tutorial

Let's create a plugin based on the python3_flask plugin template. We will called it foo_nodejs.

First, bootstrap the plugin with the command: 

bootstrap_plugin.py create --template=python3_flask foo_flask

Once you have entered this command, you will be asked to fill in some fields to configure and customize your plugin: for now, press [ENTER] to set the default values, you will be able to modify your plugin configuration anytime later.

The plugin is created in the current directory, inside the directory named foo_flask.

Check this directory, it contains few files, including:

  • main directory: the Python package for your project. Its name is the Python package name you’ll need to use to import anything inside it. This directory contains:
    • __init__.py: An empty file that tells Python that this directory should be considered a Python package. If you’re a Python beginner, read more about packages in the official Python docs.
    • wsgi.py: An entry-point for WSGI-compatible web servers to serve your project.

Let's now build the plugin by entering the command from the foo_django plugin directory:

make develop

This command will download and install Flaks framework and some other dependencies. It will also create a Flask project with an "Hello World!" application.

Important

  • if you are behind a proxy, you have to set http_proxy and https_proxy environment variables in order to be able to download any Python package you may need.
  • you may also need to disable your Linux firewall: 
          systemctl status firewalld
      systemctl stop firewalld.service
      systemctl disable firewalld

Now, you can check your application works by invoking the following URL: http://localhost:18868/foo_flask (you may replace localhost by your remote host if needed). A HTML page must display Hello World!.