Python Liquid

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

Note

This is the documentation for the latest version of Python Liquid (GitHub). Find archived documentation for Python Liquid version 1.x here.

Install

Install Python Liquid from PyPi using pip:

python -m pip install python-liquid

Or Pipenv:

pipenv install -u python-liquid

Or poetry

poetry add python-liquid

Or from conda-forge:

conda install -c conda-forge 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.