Jinja is a fast, expressive templating engine for Python.
Jinja is widely used in the Python ecosystem for rendering HTML, configuration files, and other text outputs. See the official documentation for details.
Detailed Introduction
Jinja separates templates from data, allowing Python-like syntax in templates for variable substitution, control flow, and template inheritance. It supports macros, filters, tests, and a sandboxed execution mode for rendering untrusted templates.
Main Features
- Template inheritance and includes to build reusable layouts.
- Macros and custom filters to extend template capabilities.
- Autoescaping and sandboxing to improve security when rendering untrusted input.
- JIT compilation and template caching for high rendering performance.
Use Cases
Commonly used with web frameworks (e.g., Flask), static site generation, email/config generation, and any automation that requires templated text outputs. It can be embedded in CI pipelines and developer tooling.
Technical Features
Implemented in Python, Jinja supports async rendering, i18n extensions, and template precompilation. The project follows a design that keeps application logic in Python while providing powerful, maintainable template capabilities.