Spitfire port for Python 3
Project description
Introduction
Spitfire is a high-performance Python template language inspired by Cheetah. It originally started out as an experiment to see if techniques used in compilers were applicable to templates. Spitfire has been the primary template language for youtube.com since 2008 and is used to generate billions of views a day.
This particular fork is made so that Spitfire can work with Python 3.
Example
<html>
<head><title>$title</title></head>
<body>
<ul>
#for $user in $users
<li><a href="$user.url">$user.name</a></li>
#end for
</ul>
</body>
</html>
Getting Started
Spitfire's syntax is extremely similar to Cheetah, however some directives and language features have been omitted. If you're already using Cheetah, simple templates will likely compile in Spitfire, and there are a couple compatibility modes to ease transition.
Performance
Spitfire has a basic optimizer that can make certain operations much faster. Using a basic 10x1000 table generation benchmark, Spitfire can be faster than other template systems and compares very favorably to hand-coded Python (the upper limit of performance achievable by compiling to Python bytecode). This is by no means exhaustive proof that Spitfire is always fast, just that it can provide very high performance.
# Python 2.7.6 [GCC 4.8.2] on linux, 6-core Intel Xeon E5-1650 V3 @ 3.50GHz
$ python tests/benchmarks/render_benchmark.py --compare --number 1000
Running benchmarks 1000 times each...
Cheetah template 18.76 ms
Django template 263.94 ms
Django template autoescaped 262.89 ms
Jinja2 template 8.52 ms
Jinja2 template autoescaped 18.22 ms
Mako template 3.25 ms
Mako template autoescaped 11.45 ms
Python string template 29.78 ms
Python StringIO buffer 20.92 ms
Python cStringIO buffer 5.93 ms
Python list concatenation 2.30 ms
Spitfire template -O3 6.60 ms
Spitfire template baked -O3 8.15 ms
Spitfire template unfiltered -O3 2.17 ms
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