zope-tales

library7.0pypypiunverified

Implementation of the TAL Expression Syntax (TALES) used by Zope Page Templates (ZPT/TAL). Version 7.0 supports Python >=3.9. Released on an as-needed cadence by the Zope Foundation.

web-framework

pip install zope.tales

github ↗package ↗homepage ↗docs ↗

INSTALL

IMPORT

SIG · ZOPE-TALES

zope-tales

web-frameworkpythonv7.0

Install

2.2s avg

Import

—

Disk

22MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v7.0 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.95 runs

installs and imports cleanly · install 0.0s · import 0.000s · 19.9MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 2.2s · import 0.000s · 21MB

22MB installed

● package 22MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

getEngine

✓ from zope.tales.engine import getEngine

✗ from zope.tales.engine import getEngine

Basic example: creates a TALES engine, sets a context variable, evaluates a simple expression.

from zope.tales.engine import Engine e = Engine() context = {'name': 'World'} result = e.evaluate('Hello, ${name}!', context) print(result) # outputs: Hello, World!

Debug

Known issues

breakingPython 3.9 minimum in version 7.0; older Python versions are no longer supported.

fix

Upgrade to Python 3.9+ or pin zope.tales to version 6.x.

affects: >=7.0

deprecatedThe 'namespaces' argument in Engine.evaluate() has been deprecated since 6.0 and may be removed.

fix

Use the 'context' argument instead.

affects: >=6.0

gotchaTALES uses a custom expression parser; variable names with dots (e.g., 'request.form') require explicit bracket notation like 'request/ form' or using the 'path:' prefix.

fix

Use slash (/) for path traversal: 'request/form' instead of 'request.form'.

affects: all

Upgrade

Version history

7.0latest on PyPI · released Sep 12, 2025

Audit

Dependencies

zope.interfacerequiredCore dependency for interface definitions

zope.proxyrequiredUsed for proxy support in path expressions

ZopeoptionalFull Zope application server (not required for standalone use)

Agent activity

48 hits · last 30 days

node

Amazon

OpenAI (training)

Resources

githubhttps://github.com/zopefoundation/zope.tales ↗

packagehttps://pypi.org/project/zope-tales/ ↗

homepagehttps://zope.org/ ↗

docshttps://zopetales.readthedocs.io/ ↗