zope.tal
Zope Template Application Language (TAL)
Decision gist · record as of 2026-08-14
Yes, if you are working within the Zope ecosystem or using Zope Page Templates. The package is stable, supports current Python versions, has no known vulnerabilities, and carries low install friction. No, if you are starting a new project—TAL is a legacy template language and most modern Python web frameworks use Jinja2, Mako, or similar. The unclear license treatment warrants verification before use in proprietary or GPL-licensed projects.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.9 or later; zope.interface and zope.i18nmessageid must be available at runtime.
- Low install friction with three runtime dependencies (setuptools, zope.i18nmessageid, zope.interface).
- Maintenance status is aging—last release was 336 days ago—but the package remains in production/stable state with recent Python version support (3.9–3.13) and an active repository.
License · maintenance · safety
ZPL-2.1 (unclear) — Licensed under ZPL-2.1 (Zope Public License), marked as unclear treatment. Users should verify compatibility with their project's license requirements before adopting.
last release 2025-09-12 (336 days) · last repo commit 2026-01-30 · 5 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 137,962 downloads/mo, #11,347 on PyPI
Alternatives
Verify before relying
pip install zope.tal
from zope.tal.talesengine import Engine
engine = Engine()- Whether TAL/METAL directives work with modern template frameworks outside the Zope ecosystem.
- Performance characteristics when processing large or deeply nested templates.
- Specific use cases beyond Zope Page Templates that the package supports.
What it is and what it does
zope.tal is a template language implementation that defines how dynamic content is injected into page templates via custom XML/HTML attributes and namespaces. It is part of the Zope ecosystem and works alongside zope.tales (which handles expression evaluation) to render templates with dynamic values. The package includes both TAL directives for conditional rendering, repetition, and variable substitution, and METAL macros for template reuse and composition.
The package is used primarily within Zope-based applications and frameworks that rely on Page Templates as their rendering engine. It depends on zope.interface for component architecture and zope.i18nmessageid for internationalization support. The implementation is stable and supports modern Python versions (3.9–3.13) on both CPython and PyPy, though development activity is infrequent.
Use it for
- Rendering Zope Page Templates with dynamic content injection via TAL directives.
- Building reusable template macros and page composition using METAL.
- Integrating template-based rendering into Zope applications and frameworks.
- Processing XML/HTML templates with conditional logic and variable substitution.
- Localizing template content through i18n integration in Zope-based projects.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you are working within the Zope ecosystem or using Zope Page Templates.
The package is stable, supports current Python versions, has no known vulnerabilities, and carries low install friction. No, if you are starting a new project—TAL is a legacy template language and most modern Python web frameworks use Jinja2, Mako, or similar. The unclear license treatment warrants verification before use in proprietary or GPL-licensed projects.
Install
zope-tal on PyPI
Before you install
Low install friction with three runtime dependencies (setuptools, zope.i18nmessageid, zope.interface). Maintenance status is aging—last release was 336 days ago—but the package remains in production/stable state with recent Python version support (3.9–3.13) and an active repository.
Requires Python 3.9 or later; zope.interface and zope.i18nmessageid must be available at runtime.
License in practice
Licensed under ZPL-2.1 (Zope Public License), marked as unclear treatment. Users should verify compatibility with their project's license requirements before adopting.
Quickstart
pip install zope.tal
from zope.tal.talesengine import Engine
engine = Engine()Verify before relying
- Whether TAL/METAL directives work with modern template frameworks outside the Zope ecosystem.
- Performance characteristics when processing large or deeply nested templates.
- Specific use cases beyond Zope Page Templates that the package supports.
Package facts
| License | ZPL-2.1 unclear |
| Python support | Supports the current Python release >=3.9 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 3 packagessetuptoolszope.i18nmessageidzope.interface |
| Maintenance | Aging 336 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 137,962 / month, #11,347 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableEnvironment :: Web EnvironmentFramework :: Zope :: 3Intended Audience :: DevelopersLicense :: OSI Approved :: Zope Public LicenseNatural Language :: EnglishOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.9Programming Language :: Python :: Implementation :: CPythonProgramming Language :: Python :: Implementation :: PyPyTopic :: Internet :: WWW/HTTP |
Evidence: zope_tal-6.0-py3-none-any.whl
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See also zope.tales · DocumentTemplate · zope.pagetemplate · z3c.pt · xacro · zope.browserpage · zope.viewlet · zope.structuredtext · xmacro · Chameleon