Introduction

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Templating engine to substitute variables into a template string. Templates can also include conditional logic and loops. Often used for web pages.

Library is highly inspired by the Jinja2 <https://jinja.palletsprojects.com/en/3.1.x/templates/>_ and Django Templates <https://docs.djangoproject.com/en/4.2/ref/templates/>_, but it does not implement all of their features and takes a different approach to some of them.

Main diffrences from Jinja2 and Django Templates:

• filters are not supported, and there is no plan to support them
• all variables passed inside context must be accessed using the context object
• you can call methods inside templates just like in Python
• no support for nested blocks, although inheritance is supported
• no support for custom tags

Dependencies

This driver depends on:

• Adafruit CircuitPython <https://github.com/adafruit/circuitpython>_

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle <https://circuitpython.org/libraries>_ or individual libraries can be installed using circup <https://github.com/adafruit/circup>_.

Installing from PyPI

On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI <https://pypi.org/project/adafruit-circuitpython-templateengine/>_. To install for current user:

.. code-block:: shell

pip3 install adafruit-circuitpython-templateengine

To install system-wide (this may be required in some cases):

.. code-block:: shell

sudo pip3 install adafruit-circuitpython-templateengine

To install in a virtual environment in your current project:

.. code-block:: shell

mkdir project-name && cd project-name
python3 -m venv .venv
source .env/bin/activate
pip3 install adafruit-circuitpython-templateengine

Installing to a Connected CircuitPython Device with Circup

Make sure that you have circup installed in your Python environment. Install it with the following command if necessary:

.. code-block:: shell

pip3 install circup

With circup installed and your CircuitPython device connected use the following command to install:

.. code-block:: shell

circup install adafruit_templateengine

Or the following command to update an existing version:

.. code-block:: shell

circup update

Usage Example

See the simpletest for an example of how to use it. <examples/templateengine_simpletest>_.

Documentation

API documentation for this library can be found on Read the Docs <https://docs.circuitpython.org/projects/templateengine/en/latest/>_.

For information on building library documentation, please check out this guide <https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library/sharing-our-docs-on-readthedocs#sphinx-5-1>_.

Contributing

Contributions are welcome! Please read our Code of Conduct <https://github.com/adafruit/Adafruit_CircuitPython_TemplateEngine/blob/HEAD/CODE_OF_CONDUCT.md>_ before contributing to help this project stay welcoming.