Mako (templating)

Mako (templating)
Name	Mako
Developer	Pylons ProjectPython Software FoundationIndividual contributors
Released	2004
Programming language	Python (programming language)
Operating system	Cross-platform software
Genre	Template processor
License	MIT License

Mako (templating) Mako is a template library for Python (programming language) designed to combine familiar HTML authoring with programmatic Jinja (templating language), Django (web framework), Flask (web framework), and Pyramid (web framework) style integration, offering a text-based template language used in web development, document generation, and automation. It emphasizes a lightweight syntax with direct embedding of Python (programming language) expressions, compiled template performance influenced by CPython, and use in projects associated with the Pylons Project, TurboGears, Zoomlion and other Open-source software ecosystems.

Overview

Mako provides a template engine that combines a concise markup influenced by Jinja (templating language), an expression language akin to Python (programming language), and a compilation model reminiscent of Jinja (templating language), Cheetah (templating) and Genshi. It targets integration with Flask (web framework), Django (web framework), Pyramid (web framework), Tornado (web server), and Gunicorn deployments while enabling rendering for projects like Ansible, SaltStack, Sphinx (software), and standalone scripting. The project aligns with practices from PEP 8, Python Software Foundation, and the MIT License community.

History and Development

Mako originated in the early 2000s within communities around the Pylons Project and contributors conversant with Django (web framework), TurboGears, and Zope. Early adopters included projects influenced by Plone, Repoze, and Pastescript; development tracked discussions on mailing lists associated with the Python Software Foundation and issue trackers used by GitHub and Bitbucket. Over time, contributions and maintenance practices reflected governance models from Apache Software Foundation, OpenStack, and small teams similar to those around Requests (software). Influential maintainers and contributors drew on expertise from contributors to Django (web framework), Pyramid (web framework), and SQLAlchemy projects.

Syntax and Features

Mako templates permit inline Python (programming language) code blocks, expression interpolation, and control structures similar to constructs in Jinja (templating language), Django (web framework), and Cheetah (templating). Features include inheritance mechanisms comparable to Django (web framework), namespace management used by Jinja (templating language), and streaming output useful for Tornado (web server) and Gunicorn scenarios. Mako supports explicit whitespace control, filter pipelines akin to tools in Jinja (templating language), and template caching strategies employed by Memcached and Redis. It exposes an API for template compilation to bytecode resembling CPython internals and supports customization hooks used by Pyramid (web framework), Paste (web server), and WSGI middleware stacks.

Integration and Usage

Mako integrates with Flask (web framework), Pyramid (web framework), Tornado (web server), Django (web framework), Gunicorn, and deployment tools such as Fabric (software), Ansible, and Docker (software). Developers embed templates into SQLAlchemy-backed applications, use them in Sphinx (software) documentation pipelines, or employ them in static site generators similar to Pelican (software) or Hyde (static site generator). The engine offers programmatic APIs for rendering templates in contexts provided by Jinja (templating language) adapters, Werkzeug request handlers, and Pylons Project middleware, facilitating integration with authentication systems like OAuth providers and authorization frameworks such as ACL (access control list) implementations.

Performance and Security

Mako compiles templates to Python code and caches compiled artefacts to boost performance in high-throughput environments like those served by Nginx, Gunicorn, or uWSGI. Its compiled-model approach is comparable to optimizations in Jinja (templating language), Cheetah (templating), and template engines used by Django (web framework). Security considerations require careful handling of untrusted input to avoid code injection risks familiar from discussions around XSS, CSRF, and template-injection incidents experienced by projects such as Twig (template engine) and Handlebars. Best practices echo guidance from the OWASP community and from documentation produced by the Python Software Foundation and European Union Agency for Cybersecurity.

Examples

A minimal template demonstrates expression interpolation, control flow, and inheritance much like examples in Jinja (templating language), Django (web framework), and Cheetah (templating). Examples in community tutorials reference integrations with Flask (web framework), Pyramid (web framework), Tornado (web server), and show use with SQLAlchemy sessions, Alembic migrations, or rendering within Sphinx (software) build pipelines. Community-contributed snippets often mirror idioms from Jinja (templating language), Django (web framework), and Mustache (template system) to aid adoption.

Adoption and Community

Mako's community comprises contributors active on platforms such as GitHub, PyPI, and mailing lists associated with the Pylons Project, Python Software Foundation, and related ecosystems like TurboGears, Pyramid (web framework), and Flask (web framework). Organizations and projects using or supporting Mako-style templates include groups familiar with Open-source software practices championed by the Apache Software Foundation, contributors to Django (web framework), and teams maintaining SQLAlchemy, Alembic, and Sphinx (software). Community resources include issue trackers, continuous integration setups using Travis CI, GitHub Actions, and packaging via PyPI.

License and Availability

Mako is distributed under the MIT License and is available from package repositories like PyPI and source hosting on GitHub. It follows common packaging and distribution workflows used by pip, virtualenv, and setuptools, enabling installation in environments managed by Docker (software), configuration via Ansible, and deployment to platforms such as Heroku and AWS services.

Category:Template engines