Python Liquid

Python Liquid is a Python engine for Liquid, the safe, customer-facing template language.
We follow Shopify/Liquid closely and test against the Golden Liquid test suite.

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Table of Contents

• Install
• Links
• Related Projects
• Quick Start
• Contributing

Install

Install Python Liquid using Pipenv:

$ pipenv install -u python-liquid

Or pip:

$ pip install python-liquid

Or from conda-forge:

$ conda install -c conda-forge python-liquid

Links

• Documentation: https://jg-rp.github.io/liquid/
• Documentation for Python Liquid version 1.x: https://jg-rp.github.io/python-liquid-docs-archive/
• Change Log: https://github.com/jg-rp/liquid/blob/main/CHANGES.md
• PyPi: https://pypi.org/project/python-liquid/
• Source Code: https://github.com/jg-rp/liquid
• Issue Tracker: https://github.com/jg-rp/liquid/issues

Related Projects

• Python Liquid2: A new Python engine for Liquid with extra features.
• Ruby Liquid2: Liquid2 templates for Ruby.
• Micro Liquid: A stripped-down Liquid-like template engine for Python. You can think of it as a non-evaluating alternative to Python's f-strings or t-strings.
• LiquidScript: A JavaScript engine for Liquid with a similar high-level API to Python Liquid.

Quick Start

render()

This example renders a template from a string of text with the package-level render() function. The template has just one placeholder variable you, which we've given the value "World".

from liquid import render

print(render("Hello, {{ you }}!", you="World"))
# Hello, World!

parse()

Often you'll want to render the same template several times with different variables. We can parse source text without immediately rendering it using the parse() function. parse() returns a BoundTemplate instance with a render() method.

from liquid import parse

template = parse("Hello, {{ you }}!")
print(template.render(you="World"))  # Hello, World!
print(template.render(you="Liquid"))  # Hello, Liquid!

Configure

Both parse() and render() are convenience functions that use the default Liquid environment. For all but the simplest cases, you'll want to configure an instance of Environment, then load and render templates from that.

from liquid import CachingFileSystemLoader
from liquid import Environment

env = Environment(
    autoescape=True,
    loader=CachingFileSystemLoader("./templates"),
)

Then, using env.parse() or env.get_template(), we can create a BoundTemplate from a string or read from the file system, respectively.

# ... continued from above
template = env.parse("Hello, {{ you }}!")
print(template.render(you="World"))  # Hello, World!

# Try to load "./templates/index.html"
another_template = env.get_template("index.html")
data = {"some": {"thing": [1, 2, 3]}}
result = another_template.render(**data)

Unless you happen to have a relative folder called templates with a file called index.html within it, we would expect a TemplateNotFoundError to be raised when running the example above.

Contributing

Please see Contributing to Python Liquid.