A Jinja2 extension to compile and/or compress your assets.

pip install jac

To use it, you just have to put your css or js inside a compress tag.

{% compress 'css' %}
<style type="text/sass">
sass stuff
</style>
{% endcompress %}

{% compress 'js' %}
<script type="text/coffeescript">
coffee stuff
</script>
<script type="text/coffescript" src="file.coffee"></script>
{% endcompress %}

You just have to create an environment with jac on it and configure output dir, static prefix and say where it can find your sources.

import jinja2

from jac import CompilerExtension

env = jinja2.Environment(extensions=[CompilerExtension])
env.compressor_output_dir = tmpdir
env.compressor_static_prefix = '/static'
env.compressor_source_dirs = './static_files'

After that just use template = env.from_string(html); template.render() to get it done.

Where you configure your app, just do this:

from jac.contrib.flask import JAC

app = Flask(__name__)
jac = JAC(app)

And you are done.