z3c.pt 0.3

An implementation of the TAL template language.

Overview
--------

The z3c.pt package provides an alternative implementation of the TAL
template language including i18n.

In a nutshell:

- Templates are bytecode-compiled
- Only Python-expressions are supported
- Depends only on lxml

The METAL macro language is not supported.

Template and expression language
--------------------------------

The template and expression language is based loosely on the TAL 1.4
specification*. Some notable changes:

1. Only Python-expressions are allowed. Expressions can have
try-except fallbacks using the vertical bar syntax:

tal:content="<expression> | <first fallback> | <second fallback> | ..."

2. Tuples are allowed in the tal:define statement:

tal:define="(a, b, c) [1, 2, 3]"

3. Generators are allowed in tal:repeat statements. Note that the
repeat variable is not available in this case.

tal:repeat="i <some generator>"

4. Attribute-access to dictionary entries is allowed, e.g.

dictionary.key

can be used instead of ``dictionary['key']``.

*) http://wiki.zope.org/ZPT/TALSpecification14Changelog
---------

Version 0.3 - December 23, 2007
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

- Code optimization; bug fixing spree
[malthe]

- Added ``ViewPageTemplateFile`` class
[malthe]

- Added support for i18n
[malthe]

- Engine rewrite; improved code generation abstractions
[malthe]


Version 0.2 - December 5, 2007
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

- Major optimizations to the generated code
[malthe]


Version 0.1 - December 3, 2007
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

- First public release
[malthe]