MiniJinja is an experimental Python binding of the Rust MiniJinja template engine, currently at version 2.19.0. It provides a powerful, minimal dependency template engine with a high degree of compatibility with Jinja2. MiniJinja is noted for its strong sandboxing capabilities and its better positioning for future free-threaded Python adoption, though Jinja2 may perform faster on current Python 3.14 single-threaded environments. The library sees active development with frequent releases.
pip install minijinjaVerified import paths — ran on the pinned version, not inferred.
This example demonstrates how to create a MiniJinja environment, load a template from a string, and render it with a provided context using the `context!` macro for convenience.
Consult the `UPDATING.md` file in the MiniJinja GitHub repository for detailed migration steps, especially concerning `Object`, `SeqObject`, and `StructObject` implementations.
Ensure all variables are defined in the template context, or explicitly handle potentially undefined variables using the `default` filter or `if variable is defined` checks.
Thoroughly test existing Jinja2 templates when migrating to MiniJinja. Consult MiniJinja's documentation for specific feature implementations and known divergences from Jinja2's behavior.
If working with very large integers, consider converting them to strings before passing them to the template, or implement custom filters to handle them if arithmetic operations are required within the template.
Choose the template engine based on your specific application's performance requirements, Python version, and threading model. For current Python 3.14 applications, benchmark to determine the optimal choice. For future-proofing with free-threading, MiniJinja may be advantageous.
Ensure `variable_name` exists in the dictionary or context object passed to `template.render()`. Alternatively, use `{{ variable_name | default('fallback') }}` or `{% if variable_name is defined %}` to handle potentially missing variables gracefully in the template.Check the tag/filter/test name for typos. Verify if the feature is supported by MiniJinja; if it's a custom or less common Jinja2 feature, it might not be implemented. Register custom extensions using `env.add_filter()`, `env.add_test()`, or `env.add_function()` if applicable.
Utilize whitespace control characters: `{%-` to strip leading whitespace, `-%}` to strip trailing whitespace. For example, `{%- for item in items %}`. MiniJinja, like Jinja2, also removes one trailing newline from the end of the file automatically on parsing; add an extra newline if one is strictly required at the end.No dependency data recorded yet.