ANN: empy 1.3 -- Embed Python in template text as markup
Erik Max Francis
max at alcyone.com
Sat Aug 24 19:51:44 EDT 2002
Summary
empy is a system for embedding Python expressions and statements
in template text; it takes empy source files, processes them, and
produces output. This is accomplished via expansions, which are
special signals to the empy system and are set off by a special
prefix (by default the at sign, '@'). empy can expand arbitrary
Python expressions and statements in this way, as well as a
variety of special forms. Textual data not explicitly delimited
in this way is sent unaffected to the output, allowing Python to
be used in effect as a markup language. Also supported are
recording and playback via diversions and dynamic and chainable
filters. The system is highly configurable via command line
options.
Expressions are embedded in text with the '@(...)' notation; as a
shortcut, simple variables and expressions can be abbreviated as
'@variable', '@object.attribute', '@function(arguments)',
'@sequence' [index], and combinations. Full-fledged statements
are embedded with '@{...}'. A '@' followed by a whitespace
character (including a newline) expands to nothing, allowing
string concatenations and line continuations. Comments are
indicated with '@#' and consume the rest of the line, up to and
including the trailing newline. '@%' indicate optional
"significators," which are special forms of variable assignment
intended to specify per-file identification information in a
format which is easy to parse externally. '@[...?...:...]' allows
for conditional expressions, and '@<...:...>' allows handling of
exceptions thrown from expressions. Finally, a '@@' sequence
expands to a single literal at sign.
Getting the software
The current version of empy is 1.3.
The latest version of the software is available in a tarball here:
http://www.alcyone.com/pyos/empy/empy-latest.tar.gz.
The official URL for this Web site is
http://www.alcyone.com/pyos/empy/.
Requirements
empy should work with any version of Python from 1.5.x onward.
License
This code is released under the "GPL",
http://www.gnu.org/copyleft/gpl.html.
...
Release history [since 1.2]
- 1.3; 2002 Aug 24. Pseudomodule as true instance; move toward
more verbose (and clear) pseudomodule functions; fleshed out
diversion model; filters; conditional expressions with '@[...]';
protected expressions with '@<...>'; preprocessing with '-P' (in
preparation for possible support for command line arguments).
--
Erik Max Francis / max at alcyone.com / http://www.alcyone.com/max/
__ San Jose, CA, US / 37 20 N 121 53 W / ICQ16063900 / &tSftDotIotE
/ \ There is nothing so subject to the inconstancy of fortune as war.
\__/ Miguel de Cervantes
Church / http://www.alcyone.com/pyos/church/
A lambda calculus explorer in Python.
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