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.TH "LIBSASS" "1" "Apr 07, 2021" "0.20.1" "libsass"
.SH NAME
libsass \- libsass Documentation
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This package provides a simple Python extension module \fBsass\fP which is
binding \fI\%LibSass\fP (written in C/C++ by Hampton Catlin and Aaron Leung).
It\(aqs very straightforward and there isn\(aqt any headache related Python
distribution/deployment.  That means you can add just \fBlibsass\fP into
your \fBsetup.py\fP\(aqs \fBinstall_requires\fP list or \fBrequirements.txt\fP
file.
.sp
It currently supports CPython 2.6, 2.7, 3.5\-\-3.7, and PyPy 2.3+!
.SH FEATURES
.INDENT 0.0
.IP \(bu 2
You don\(aqt need any Ruby/Node.js stack at all, for development or deployment
either.
.IP \(bu 2
Fast. (\fI\%LibSass\fP is written in C++.)
.IP \(bu 2
Simple API.  See \fI\%example code\fP for details.
.IP \(bu 2
Custom functions.
.IP \(bu 2
\fB@import\fP callbacks.
.IP \(bu 2
Support both tabbed (Sass) and braces (SCSS) syntax.
.IP \(bu 2
WSGI middleware for ease of development.
It automatically compiles Sass/SCSS files for each request.
See also \fBsassutils.wsgi\fP for details.
.IP \(bu 2
\fBsetuptools\fP/\fI\%distutils\fP integration.
You can build all Sass/SCSS files using
\fBsetup.py build_sass\fP command.
See also \fBsassutils.distutils\fP for details.
.IP \(bu 2
Works also on PyPy.
.IP \(bu 2
Provides prebuilt wheel (\fI\%PEP 427\fP) binaries for Windows and Mac.
.UNINDENT
.SH INSTALL
.sp
It\(aqs available on \fI\%PyPI\fP, so you can install it using \fBpip\fP:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
$ pip install libsass
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
\fBNOTE:\fP
.INDENT 0.0
.INDENT 3.5
libsass requires some features introduced by the recent C++ standard.
You need a C++ compiler that support those features.
See also libsass project\(aqs \fI\%README\fP file.
.UNINDENT
.UNINDENT
.SH EXAMPLES
.SS Compile a String of Sass to CSS
.sp
.nf
.ft C
>>> import sass
>>> sass.compile(string=\(aqa { b { color: blue; } }\(aq)
\(aqa b {\en  color: blue; }\en\(aq
.ft P
.fi
.SS Compile a Directory of Sass Files to CSS
.sp
.nf
.ft C
>>> import sass
>>> import os
>>> os.mkdir(\(aqcss\(aq)
>>> os.mkdir(\(aqsass\(aq)
>>> scss = """\e
\&... $theme_color: #cc0000;
\&... body {
\&...     background\-color: $theme_color;
\&... }
\&... """
>>> with open(\(aqsass/example.scss\(aq, \(aqw\(aq) as example_scss:
\&...      example_scss.write(scss)
\&...
>>> sass.compile(dirname=(\(aqsass\(aq, \(aqcss\(aq), output_style=\(aqcompressed\(aq)
>>> with open(\(aqcss/example.css\(aq) as example_css:
\&...     print(example_css.read())
\&...
body{background\-color:#c00}
.ft P
.fi
.SH USER'S GUIDE
.SS Using with Flask
.sp
This guide explains how to use libsass with the \fI\%Flask\fP web framework.
\fBsassutils\fP package provides several tools that can be integrated
into web applications written in Flask.
.SS Contents
.INDENT 0.0
.IP \(bu 2
\fI\%Using with Flask\fP
.INDENT 2.0
.IP \(bu 2
\fI\%Directory layout\fP
.IP \(bu 2
\fI\%Defining manifest\fP
.IP \(bu 2
\fI\%Building Sass/SCSS for each request\fP
.IP \(bu 2
\fI\%Building Sass/SCSS for each deployment\fP
.UNINDENT
.UNINDENT
.SS Directory layout
.sp
Imagine the project contained in such directory layout:
.INDENT 0.0
.IP \(bu 2
\fBsetup.py\fP
.IP \(bu 2
\fBmyapp/\fP
.INDENT 2.0
.IP \(bu 2
\fB__init__.py\fP
.IP \(bu 2
\fBstatic/\fP
.INDENT 2.0
.IP \(bu 2
\fBsass/\fP
.IP \(bu 2
\fBcss/\fP
.UNINDENT
.IP \(bu 2
\fBtemplates/\fP
.UNINDENT
.UNINDENT
.sp
Sass/SCSS files will go inside \fBmyapp/static/sass/\fP directory.
Compiled CSS files will go inside \fBmyapp/static/css/\fP directory.
CSS files can be regenerated, so add \fBmyapp/static/css/\fP into your
ignore list like \fB\&.gitignore\fP or \fB\&.hgignore\fP\&.
.SS Defining manifest
.sp
The \fBsassutils\fP defines a concept named \fImanifest\fP\&.
Manifest is the build settings of Sass/SCSS.  It specifies some paths
related to building Sass/SCSS:
.INDENT 0.0
.IP \(bu 2
The path of the directory which contains Sass/SCSS source files.
.IP \(bu 2
The path of the directory which the compiled CSS files will go.
.IP \(bu 2
The path, exposed to HTTP (through WSGI), of the directory that
will contain the compiled CSS files.
.UNINDENT
.sp
Every package may have its own manifest.  Paths have to be relative
to the path of the package.
.sp
For example, in the above project, the package name is \fBmyapp\fP\&.
The path of the package is \fBmyapp/\fP\&.  The path of the Sass/SCSS
directory is \fBstatic/sass/\fP (relative to the package directory).
The path of the CSS directory is \fBstatic/css/\fP\&.
The exposed path is \fB/static/css\fP\&.
.sp
These settings can be represented as the following manifests:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
{
    \(aqmyapp\(aq: (\(aqstatic/sass\(aq, \(aqstatic/css\(aq, \(aq/static/css\(aq)
}
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
As you can see the above, the set of manifests are represented in dictionary,
in which the keys are packages names and the values are tuples of paths.
.SS Building Sass/SCSS for each request
.sp
\fBSEE ALSO:\fP
.INDENT 0.0
.INDENT 3.5
.INDENT 0.0
.TP
.B Flask \-\-\- \fI\%Hooking in WSGI Middlewares\fP
The section which explains how to integrate WSGI middlewares to
Flask.
.TP
.B Flask \-\-\- \fI\%Application Dispatching\fP
The documentation which explains how Flask dispatches each
request internally.
.UNINDENT
.UNINDENT
.UNINDENT
.sp
In development, manually building Sass/SCSS files for each change is
a tedious task.  \fBSassMiddleware\fP makes the web
application build Sass/SCSS files for each request automatically.
It\(aqs a WSGI middleware, so it can be plugged into the web app written in
Flask.
.sp
\fBSassMiddleware\fP takes two required parameters:
.INDENT 0.0
.IP \(bu 2
The WSGI\-compliant callable object.
.IP \(bu 2
The set of manifests represented as a dictionary.
.UNINDENT
.sp
So:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
from flask import Flask
from sassutils.wsgi import SassMiddleware

app = Flask(__name__)

app.wsgi_app = SassMiddleware(app.wsgi_app, {
    \(aqmyapp\(aq: (\(aqstatic/sass\(aq, \(aqstatic/css\(aq, \(aq/static/css\(aq)
})
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
And then, if you want to link a compiled CSS file, use the
\fI\%url_for()\fP function:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
<link href="{{ url_for(\(aqstatic\(aq, filename=\(aqcss/style.scss.css\(aq) }}"
      rel="stylesheet" type="text/css">
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
\fBNOTE:\fP
.INDENT 0.0
.INDENT 3.5
The linked filename is \fBstyle.scss.css\fP, not just \fBstyle.scss\fP\&.
All compiled filenames have trailing \fB\&.css\fP suffix.
.UNINDENT
.UNINDENT
.SS Building Sass/SCSS for each deployment
.sp
\fBNOTE:\fP
.INDENT 0.0
.INDENT 3.5
This section assumes that you use \fI\%setuptools\fP for deployment.
.UNINDENT
.UNINDENT
.sp
\fBSEE ALSO:\fP
.INDENT 0.0
.INDENT 3.5
.INDENT 0.0
.TP
.B Flask \-\-\- \fI\%Deploying with Setuptools\fP
How to deploy Flask application using \fI\%setuptools\fP\&.
.UNINDENT
.UNINDENT
.UNINDENT
.sp
If libsass is installed in the \fBsite\-packages\fP (for example,
your virtualenv), the \fBsetup.py\fP script also gets a new command
provided by libsass: \fBbuild_sass\fP\&.
The command is aware of the \fBsass_manifests\fP option of \fBsetup.py\fP and
builds all Sass/SCSS sources according to the manifests.
.sp
Add these arguments to \fBsetup.py\fP script:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
setup(
    # ...,
    setup_requires=[\(aqlibsass >= 0.6.0\(aq],
    sass_manifests={
        \(aqmyapp\(aq: (\(aqstatic/sass\(aq, \(aqstatic/css\(aq, \(aq/static/css\(aq)
    }
)
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
The \fBsetup_requires\fP option makes sure that libsass is installed
in \fBsite\-packages\fP (for example, your virtualenv) before
the \fBsetup.py\fP script.  That means if you run the \fBsetup.py\fP
script and libsass isn\(aqt installed in advance, it will automatically
install libsass first.
.sp
The \fBsass_manifests\fP specifies the manifests for libsass.
.sp
Now \fBsetup.py build_sass\fP will compile all Sass/SCSS files
in the specified path and generates compiled CSS files inside the specified
path (according to the manifests).
.sp
If you use it with \fBsdist\fP or \fBbdist\fP commands, the packed archive will
also contain the compiled CSS files!
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
$ python setup.py build_sass sdist
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
You can add aliases to make these commands always run the \fBbuild_sass\fP
command first.  Make \fBsetup.cfg\fP config:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
[aliases]
sdist = build_sass sdist
bdist = build_sass bdist
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
Now it automatically builds Sass/SCSS sources and include the compiled CSS files
to the package archive when you run \fBsetup.py sdist\fP\&.
.SS Changelog
.SS Version 0.20.1
.sp
Released on August 27, 2020.
.INDENT 0.0
.IP \(bu 2
(no changes, re\-releasing to test build automation)
.UNINDENT
.SS Version 0.20.0
.sp
Released on May 1, 2020.
.INDENT 0.0
.IP \(bu 2
Produce abi3 wheels on macos / linux [\fI\%#307\fP by Anthony Sottile]
.IP \(bu 2
Follow up the libsass upstream: 3.6.4 \-\-\- See the release notes of LibSass
\fI\%3.6.4\fP\&. [\fI\%#313\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.19.4
.sp
Released on November 3, 2019.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.6.3 \-\-\- See the release notes of LibSass
\fI\%3.6.3\fP\&. [\fI\%#304\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.19.3
.sp
Released on October 5, 2019.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.6.2 \-\-\- See the release notes of LibSass
\fI\%3.6.2\fP\&. [\fI\%#302\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.19.2
.sp
Released on June 16, 2019.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.6.1 \-\-\- See the release notes of LibSass
\fI\%3.6.1\fP\&. [\fI\%#298\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.19.1
.sp
Released on May 18, 2019.
.INDENT 0.0
.IP \(bu 2
Re\-release of 0.19.0 with windows python2.7 wheels [\fI\%#297\fP by Anthony
Sottile]
.UNINDENT
.SS Version 0.19.0
.sp
Released on May 18, 2019.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.6.0 \-\-\- See the release notes of LibSass
\fI\%3.6.0\fP\&. [\fI\%#295\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.18.0
.sp
Release on March 13, 2019
.INDENT 0.0
.IP \(bu 2
Add support for previous import path to importer callbacks [\fI\%#287\fP
\fI\%#291\fP by Frankie Dintino]
.UNINDENT
.SS Version 0.17.0
.sp
Release on January 03, 2019
.INDENT 0.0
.IP \(bu 2
.INDENT 2.0
.TP
.B Add several new cli options [\fI\%#279\fP \fI\%#268\fP by Frankie Dintino]
.INDENT 7.0
.IP \(bu 2
\fB\-\-sourcemap\-file\fP: output file for source map
.IP \(bu 2
\fB\-\-sourcemap\-contents\fP: embed \fBsourcesContent\fP in source map
.IP \(bu 2
\fB\-\-sourcemap\-embed\fP: embed \fBsourceMappingURL\fP as data uri
.IP \(bu 2
\fB\-\-omit\-sourcemap\-url\fP: omit source map url comment from output
.IP \(bu 2
\fB\-\-sourcemap\-root\fP: base path, emitted as \fBsourceRoot\fP in source map
.UNINDENT
.UNINDENT
.IP \(bu 2
Fix \fB\&.sass\fP in \fBWsgiMiddleware\fP (again) [\fI\%#280\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.16.1
.sp
Released on November 25, 2018.
.INDENT 0.0
.IP \(bu 2
Fix compilation on macos mojave [\fI\%#276\fP \fI\%#277\fP by Anthony
Sottile]
.IP \(bu 2
Fix \fB\&.sass\fP in \fBWsgiMiddleware\fP for \fBstrip_extension=True\fP
[\fI\%#278\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.16.0
.sp
Released on November 13, 2018.
.INDENT 0.0
.IP \(bu 2
Use \fB\-lc++\fP link flag when compiling with \fBclang\fP [\fI\%#270\fP by
Christian Thieme \fI\%#271\fP by Anthony Sottile]
.IP \(bu 2
Honor \fBstrip_extension\fP in \fBSassMiddleware\fP [\fI\%#274\fP by Anthony
Sottile]
.IP \(bu 2
Follow up the libsass upstream: 3.5.5 \-\-\- See the release notes of LibSass
\fI\%3.5.5\fP\&. [\fI\%#275\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.15.1
.sp
Released on September 24, 2018.
.INDENT 0.0
.IP \(bu 2
Fix \fBsetup.py sdist\fP (regressed in 0.15.0) [\fI\%#267\fP by
Anthony Sottile]
.UNINDENT
.SS Version 0.15.0
.sp
Released on September 16, 2018.
.INDENT 0.0
.IP \(bu 2
Fix invalid escape sequences [\fI\%#249\fP by Anthony Sottile]
.IP \(bu 2
Add code of conduct [\fI\%#251\fP by Nick Schonning]
.IP \(bu 2
Add support for python3.7 and remove testing for python3.4 [\fI\%#254\fP
by Anthony Sottile]
.IP \(bu 2
Add \fBstrip_extension\fP option for wsgi / distutils builder [\fI\%#55\fP
\fI\%#258\fP by Anthony Sottile \fI\%#260\fP by Morten Brekkevold]
.IP \(bu 2
Deprecate \fBsassc\fP (replaced by \fBpysassc\fP).  [\fI\%#262\fP by
Anthony Sottile]
.IP \(bu 2
Import abc classes from \fBcollections.abc\fP to remove \fBDeprecationWarning\fP
[\fI\%#264\fP by Gary van der Merwe \fI\%#265\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.14.5
.sp
Released on April 25, 2018.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.5.4 \-\-\- See the release notes of LibSass
\fI\%3.5.4\fP\&. [\fI\%#247\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.14.4
.sp
Released on April 24, 2018.
.INDENT 0.0
.IP \(bu 2
Add ability to specify imports for custom extensions.  This provides a
way to enable imports of \fB\&.css\fP files (which was removed in 3.5.3).
Specify \fB\-\-import\-extensions .css\fP to restore the previous behavior.
[\fI\%#246\fP by Samuel Colvin]
.UNINDENT
.SS Version 0.14.3
.sp
Released on April 23, 2018.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.5.3 \-\-\- See the release notes of LibSass
\fI\%3.5.3\fP\&. [\fI\%#244\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.14.2
.sp
Released on March 16, 2018.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.5.2 \-\-\- See the release notes of LibSass
\fI\%3.5.2\fP\&. [\fI\%#243\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.14.1
.sp
Released on March 12, 2018.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.5.1 \-\-\- See the release notes of LibSass
\fI\%3.5.1\fP\&. [\fI\%#242\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.14.0
.sp
Released on March 6, 2018.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.5.0 \-\-\- See the release notes of LibSass
\fI\%3.5.0\fP\&. [\fI\%#241\fP by Anthony Sottile]
.IP \(bu 2
\fBSassList\fP type gained an additional option \fBbracketed=False\fP to match
the upstream changes to the \fBsass_list\fP type. [\fI\%#184\fP by Anthony
Sottile]
.UNINDENT
.SS Version 0.13.7
.sp
Released on February 5, 2018.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.4.9 \-\-\- See the release notes of LibSass
\fI\%3.4.9\fP\&. [\fI\%#232\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.13.6
.sp
Released on January 19, 2018.
.INDENT 0.0
.IP \(bu 2
libsass\-python has moved to the sass organization!
.UNINDENT
.SS Version 0.13.5
.sp
Released on January 11, 2018.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.4.8 \-\-\- See the release notes of LibSass
\fI\%3.4.8\fP\&. [\fI\%#228\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.13.4
.sp
Released on November 14, 2017.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.4.7 \-\-\- See the release notes of LibSass
\fI\%3.4.7\fP\&. [\fI\%#226\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.13.3
.sp
Released on October 11, 2017.
.INDENT 0.0
.IP \(bu 2
Sort input files for determinism [\fI\%#212\fP by Bernhard M. Wiedemann]
.IP \(bu 2
Include LICENSE file in distributions [\fI\%#216\fP by Dougal J. Sutherland]
.IP \(bu 2
Add a \fBpysassc\fP entry to replace \fBsassc\fP [\fI\%#218\fP by
Anthony Sottile]
.IP \(bu 2
Enable building with dynamic linking [\fI\%#219\fP by Marcel Plch]
.IP \(bu 2
Follow up the libsass upstream: 3.4.6 \-\-\- See the release notes of LibSass
\fI\%3.4.6\fP\&. [\fI\%#221\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.13.2
.sp
Released on June 14, 2017.
.INDENT 0.0
.IP \(bu 2
Always add cwd to import paths [\fI\%#208\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.13.1
.sp
Released on June 8, 2017.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.4.5 \-\-\- See the release notes of LibSass
\fI\%3.4.5\fP\&. [\fI\%#207\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.13.0
.sp
Released on June 7, 2017.
.INDENT 0.0
.IP \(bu 2
Use \fBgetfullargspec\fP when available in python 3. [\fI\%#188\fP by
Thom Wiggers]
.IP \(bu 2
Use \fBsass_copy_c_string\fP instead of \fBstrdup\fP for portability
[\fI\%#196\fP by Anthony Sottile]
.IP \(bu 2
Use \fB\-std=gnu++0x\fP to fix installation under cygwin [\fI\%#195\fP
\fI\%#197\fP by Anthony Sottile]
.IP \(bu 2
Correct source map url [\fI\%#201\fP \fI\%#202\fP by Anthony Sottile]
.IP \(bu 2
Remove \fB\-\-watch\fP [\fI\%#203\fP by Anthony Sottile]
.IP \(bu 2
Follow up the libsass upstream: 3.4.4 \-\-\- See the release notes of LibSass
\fI\%3.4.4\fP\&. [\fI\%#205\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.12.3
.sp
Released on January 7, 2017.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.4.3 \-\-\- See the release notes of LibSass
\fI\%3.4.3\fP\&. [\fI\%#178\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.12.2
.sp
Released on January 5, 2017.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.4.2 \-\-\- See the release notes of LibSass
\fI\%3.4.2\fP\&. [\fI\%#176\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.12.1
.sp
Released on December 20, 2016.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.4.1 \-\-\- See the release notes of LibSass
\fI\%3.4.1\fP\&. [\fI\%#175\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.12.0
.sp
Released on December 10, 2016.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.4.0 \-\-\- See the release notes of LibSass
\fI\%3.4.0\fP\&. [\fI\%#173\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.11.2
.sp
Released on October 24, 2016.
.INDENT 0.0
.IP \(bu 2
Drop support for python2.6 [\fI\%#158\fP by Anthony Sottile]
.IP \(bu 2
Deprecate \fB\-\-watch\fP [\fI\%#156\fP by Anthony Sottile]
.IP \(bu 2
Preserve line endings [\fI\%#160\fP by Anthony Sottile]
.IP \(bu 2
Follow up the libsass upstream: 3.3.6 \-\-\- See the release notes of LibSass
\fI\%3.3.6\fP\&. [\fI\%#167\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.11.1
.sp
Released on April 22, 2016.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.3.5 \-\-\- See the release notes of LibSass
\fI\%3.3.5\fP\&. [\fI\%#148\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.11.0
.sp
Released on March 23, 2016.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.3.4 \-\-\- See the release notes of LibSass
\fI\%3.3.4\fP\&. [\fI\%#144\fP by Anthony Sottile]
.IP \(bu 2
Expose libsass version in \fBsassc \-\-version\fP and \fBsass.libsass_version\fP
[\fI\%#142\fP \fI\%#141\fP \fI\%#140\fP by Anthony Sottile]
.IP \(bu 2
Fix warning about unused enum on switch [\fI\%#127\fP \fI\%#131\fP by
Anthony Sottile]
.IP \(bu 2
Sourcemaps no longer imply source comments [\fI\%#124\fP \fI\%#130\fP by
Tim Tisdall]
.IP \(bu 2
Add \fB\-\-source\-comments\fP option to \fBsassc\fP [\fI\%#124\fP \fI\%#130\fP by
Anthony Sottile]
.IP \(bu 2
Improve formatting of \fBCompileError\fP under python3 [\fI\%#123\fP by Anthony
Sottile]
.IP \(bu 2
Raise when compiling a directory which does not exist [\fI\%#116\fP
\fI\%#119\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.10.1
.sp
Released on January 29, 2016.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.3.3 \-\-\- See the release notes of LibSass
\fI\%3.3.3\fP\&. [by Anthony Sottile]
.IP \(bu 2
Allow \-t for style like sassc [\fI\%#98\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.10.0
.sp
Released on December 15, 2015.
.INDENT 0.0
.IP \(bu 2
Support custom import callbacks [\fI\%#81\fP by Alice Zoë Bevan–McGregor,
Anthony Sottile]
.IP \(bu 2
Disallow arbitrary kwargs in compile() [\fI\%#109\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.9.3
.sp
Released on December 03, 2015.
.INDENT 0.0
.IP \(bu 2
Support "indented" Sass compilation [\fI\%#41\fP by Alice Zoë Bevan–McGregor]
.IP \(bu 2
Fix wheels on windows [\fI\%#28\fP \fI\%#49\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.9.2
.sp
Released on November 12, 2015.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.3.2 \-\-\- See the release notes of LibSass
\fI\%3.3.2\fP\&. [by Anthony Sottile]
.IP \(bu 2
Require VS 2015 to build on windows [\fI\%#99\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.9.1
.sp
Released on October 29, 2015.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.3.1 \-\-\- See the release notes of LibSass
\fI\%3.3.1\fP\&. [by Anthony Sottile]
.UNINDENT
.SS Version 0.9.0
.sp
Released on October 28, 2015.
.INDENT 0.0
.IP \(bu 2
Fix a bug with writing UTF\-8 to a file [\fI\%#72\fP by Caleb Ely]
.IP \(bu 2
Fix a segmentation fault on ^C [\fI\%#87\fP by Anthony Sottile]
.IP \(bu 2
Follow up the libsass upstream: 3.3.0 \-\-\- See the release notes of LibSass
\fI\%3.3.0\fP\&. [\fI\%#96\fP by Anthony Sottile]
.UNINDENT
.SS Version 0.8.3
.sp
Released on August 2, 2015.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.2.5 \-\-\- See the release notes of LibSass
\fI\%3.2.5\fP\&.  [\fI\%#79\fP, \fI\%#80\fP by Anthony Sottile]
.IP \(bu 2
Fixed a bug that \fB*.sass\fP files were ignored.
[\fI\%#78\fP by Guilhem MAS\-PAITRAULT]
.UNINDENT
.SS Version 0.8.2
.sp
Released on May 19, 2015.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.2.4 \-\-\- See the release notes of LibSass
\fI\%3.2.3\fP, and \fI\%3.2.4\fP\&.  [\fI\%#69\fP by Anthony Sottile]
.IP \(bu 2
The default value of \fBSassMiddleware\fP\(aqs
\fBerror_status\fP parameter was changed from \fB\(aq500 Internal Server Error\(aq\fP
to \fB\(aq200 OK\(aq\fP so that Mozilla Firefox can render the error message well.
[\fI\%#67\fP, \fI\%#68\fP, \fI\%#70\fP by zxv]
.UNINDENT
.SS Version 0.8.1
.sp
Released on May 14, 2015.
.INDENT 0.0
.IP \(bu 2
Fixed a bug that there was no \fB\(aqexpanded\(aq\fP in \fBsass.OUTPUT_STYLES\fP
but \fB\(aqexpected\(aq\fP instead which is a typo.  [\fI\%#66\fP by Triangle717]
.IP \(bu 2
Fixed broken FreeBSD build.  [\fI\%#65\fP by Toshiharu Moriyama]
.UNINDENT
.SS Version 0.8.0
.sp
Released on May 3, 2015.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.2.2 \-\-\- See the release notes of LibSass
\fI\%3.2.0\fP, \fI\%3.2.1\fP, and \fI\%3.2.2\fP\&.
[\fI\%#61\fP, \fI\%#52\fP, \fI\%#56\fP, \fI\%#58\fP, \fI\%#62\fP, \fI\%#64\fP
by Anthony Sottile]
.INDENT 2.0
.IP \(bu 2
Compact and expanded output styles  [\fI\%#37\fP]
.IP \(bu 2
Strings and interpolation closer to Ruby Sass
.IP \(bu 2
The correctness of the generated sourcemap files
.IP \(bu 2
Directive buddling
.IP \(bu 2
Full support for the \fB@at\-root\fP directive
.IP \(bu 2
Full support for \fB!global\fP variable scoping
.UNINDENT
.IP \(bu 2
Now underscored files are ignored when compiling a directory.
[\fI\%#57\fP by Anthony Sottile]
.IP \(bu 2
Fixed broken FreeBSD build.  [\fI\%#34\fP, \fI\%#60\fP by Ilya Baryshev]
.IP \(bu 2
\fBSassMiddleware\fP became to log syntax errors
if exist during compilation to \fBsassutils.wsgi.SassMiddleware\fP logger
with level \fBERROR\fP\&.  [\fI\%#42\fP]
.UNINDENT
.SS Version 0.7.0
.sp
Released on March 6, 2015.
.sp
Anthony Sottile contributed to the most of this release.  Huge thanks to him!
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.1.0 \-\-\- See the \fI\%release note\fP of LibSass.
[\fI\%#38\fP, \fI\%#43\fP by Anthony Sottile]
.INDENT 2.0
.IP \(bu 2
Custom functions and imports
.IP \(bu 2
Decrementing in \fB@for\fP loops
.IP \(bu 2
\fB@debug\fP and \fB@error\fP
.IP \(bu 2
\fBnot\fP operator
.IP \(bu 2
\fBnth()\fP for maps
.IP \(bu 2
\fBinspect()\fP
.IP \(bu 2
\fBfeature\-exists()\fP
.IP \(bu 2
\fBunique\-id()\fP
.IP \(bu 2
\fBrandom()\fP
.UNINDENT
.IP \(bu 2
Added custom functions support.  [\fI\%#13\fP, \fI\%#44\fP by Anthony Sottile]
.INDENT 2.0
.IP \(bu 2
Added \fBsass.SassFunction\fP class.
.IP \(bu 2
Added \fBcustom_functions\fP parameter to \fBsass.compile()\fP function.
.IP \(bu 2
Added data types for custom functions:
.INDENT 2.0
.IP \(bu 2
\fBsass.SassNumber\fP
.IP \(bu 2
\fBsass.SassColor\fP
.IP \(bu 2
\fBsass.SassList\fP
.IP \(bu 2
\fBsass.SassMap\fP
.IP \(bu 2
\fBsass.SassError\fP
.IP \(bu 2
\fBsass.SassWarning\fP
.UNINDENT
.UNINDENT
.IP \(bu 2
Added \fBprecision\fP parameter to \fBsass.compile()\fP function.
[\fI\%#39\fP by Andrea Stagi]
.IP \(bu 2
\fBsassc\fP has a new \fB\-p\fP/\fB\-\-precision\fP option.  [\fI\%#39\fP by Andrea Stagi]
.UNINDENT
.SS Version 0.6.2
.sp
Released on November 25, 2014.
.sp
Although 0.6.0\-\-0.6.1 have needed GCC (G++) 4.8+, LLVM Clang 3.3+,
now it became back to only need GCC (G++) 4.6+, LLVM Clang 2.9+,
or Visual Studio 2013 Update 4+.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.0.2 \-\-\- See the \fI\%release note\fP of libsass.
[\fI\%#33\fP by Rodolphe Pelloux\-Prayer]
.IP \(bu 2
Fixed a bug that \fBsassc \-\-watch\fP crashed when a file is not
compilable on the first try.  [\fI\%#32\fP by Alan Justino da Silva]
.IP \(bu 2
Fixed broken build on Windows.
.UNINDENT
.SS Version 0.6.1
.sp
Released on November 6, 2014.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.0.1 \-\-\- See the \fI\%release note\fP of LibSass.
.IP \(bu 2
Fixed a bug that \fBSassMiddleware\fP never closes
the socket on some WSGI servers e.g. \fBeventlet.wsgi\fP\&.
.UNINDENT
.SS Version 0.6.0
.sp
Released on October 27, 2014.
.sp
Note that since libsass\-python 0.6.0 (and libsass 3.0) it requires C++11
to compile.  Although 0.6.2 became back to only need GCC (G++) 4.6+,
LLVM Clang 2.9+, from 0.6.0 to 0.6.1 you need GCC (G++) 4.8+, LLVM Clang 3.3+,
or Visual Studio 2013 Update 4+.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 3.0 \-\-\- See the \fI\%release note\fP of LibSass.
.INDENT 2.0
.IP \(bu 2
Decent extends support
.IP \(bu 2
Basic Sass Maps Support
.IP \(bu 2
Better UTF\-8 Support
.IP \(bu 2
\fBcall()\fP function
.IP \(bu 2
Better Windows Support
.IP \(bu 2
Spec Enhancements
.UNINDENT
.IP \(bu 2
Added missing \fI\%partial import\fP support.  [\fI\%#27\fP by item4]
.IP \(bu 2
\fBSOURCE_COMMENTS\fP became deprecated.
.IP \(bu 2
\fBsass.compile()\fP\(aqs parameter \fBsource_comments\fP now can take only
\fBbool\fP instead of \fBstr\fP\&.  String values like \fB\(aqnone\(aq\fP,
\fB\(aqline_numbers\(aq\fP, and \fB\(aqmap\(aq\fP become deprecated, and will be obsolete
soon.
.IP \(bu 2
\fBbuild_directory()\fP function has a new optional
parameter \fBoutput_style\fP\&.
.IP \(bu 2
\fBbuild()\fP method has a new optional
parameter \fBoutput_style\fP\&.
.IP \(bu 2
Added \fB\-\-output\-style\fP/\fB\-s\fP option to
\fBbuild_sass\fP command.  [\fI\%#25\fP]
.UNINDENT
.SS Version 0.5.1
.sp
Released on September 23, 2014.
.INDENT 0.0
.IP \(bu 2
Fixed a bug that \fBSassMiddleware\fP yielded
\fI\%str\fP instead of \fI\%bytes\fP on Python 3.
.IP \(bu 2
Fixed several Unicode\-related bugs on Windows.
.IP \(bu 2
Fixed a bug that \fBbuild_directory()\fP,
\fBSassMiddleware\fP, and
\fBbuild_sass\fP don\(aqt recursively build
subdirectories.
.UNINDENT
.SS Version 0.5.0
.sp
Released on June 6, 2014.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream: 2.0 \-\-\- See the \fI\%release note\fP of LibSass.
.INDENT 2.0
.IP \(bu 2
Added indented syntax support (\fB*.sass\fP files).
.IP \(bu 2
Added expanded selector support (BEM).
.IP \(bu 2
Added string functions.
.IP \(bu 2
Fixed UTF\-8 support.
.IP \(bu 2
Backward incompatibility: broken extends.
.UNINDENT
.UNINDENT
.SS Unstable version 0.4.2.20140529.cd3ee1cbe3
.sp
Released on May 29, 2014.
.INDENT 0.0
.IP \(bu 2
Version scheme changed to use periods (\fB\&.\fP) instead of hyphens (\fB\-\fP)
due to setuptools seems to treat hyphens special.
.IP \(bu 2
Fixed malformed packaging that doesn\(aqt correctly preserve the package name
and version.
.UNINDENT
.SS Unstable Version 0.4.2\-20140528\-cd3ee1cbe3
.sp
Released on May 28, 2014.
.INDENT 0.0
.IP \(bu 2
Follow up the libsass upstream:
\fI\%cd3ee1cbe34d5316eb762a43127a3de9575454ee\fP\&.
.UNINDENT
.SS Version 0.4.2
.sp
Released on May 22, 2014.
.INDENT 0.0
.IP \(bu 2
Fixed build failing on Mac OS X 10.8 or earlier.  [\fI\%#19\fP]
.IP \(bu 2
Fixed \fI\%UnicodeEncodeError\fP that \fBManifest.build_one()\fP method rises when the input source
contains any non\-ASCII Unicode characters.
.UNINDENT
.SS Version 0.4.1
.sp
Released on May 20, 2014.
.INDENT 0.0
.IP \(bu 2
Fixed \fI\%UnicodeEncodeError\fP that rise when the input source contains
any non\-ASCII Unicode characters.
.UNINDENT
.SS Version 0.4.0
.sp
Released on May 6, 2014.
.INDENT 0.0
.IP \(bu 2
\fBsassc\fP has a new \fB\-w\fP/\fB\-\-watch\fP option.
.IP \(bu 2
Expose source maps support:
.INDENT 2.0
.IP \(bu 2
\fBsassc\fP has a new \fB\-m\fP/\fB\-g\fP/\fB\-\-sourcemap\fP option.
.IP \(bu 2
\fBSassMiddleware\fP now also creates source map files
with filenames followed by \fB\&.map\fP suffix.
.IP \(bu 2
\fBManifest.build_one()\fP method
has a new \fBsource_map\fP option.  This option builds also a source map
file with the filename followed by \fB\&.map\fP suffix.
.IP \(bu 2
\fBsass.compile()\fP has a new optional parameter \fBsource_comments\fP\&.
It can be one of \fBsass.SOURCE_COMMENTS\fP keys.  It also has
a new parameter \fBsource_map_filename\fP which is required only when
\fBsource_comments=\(aqmap\(aq\fP\&.
.UNINDENT
.IP \(bu 2
Fixed Python 3 incompatibility of \fBsassc\fP program.
.IP \(bu 2
Fixed a bug that multiple \fBinclude_paths\fP doesn\(aqt work on Windows.
.UNINDENT
.SS Version 0.3.0
.sp
Released on February 21, 2014.
.INDENT 0.0
.IP \(bu 2
Added support for Python 3.3.  [\fI\%#7\fP]
.IP \(bu 2
Dropped support for Python 2.5.
.IP \(bu 2
Fixed build failing on Mac OS X.
[\fI\%#4\fP, \fI\%#5\fP, \fI\%#6\fP by Hyungoo Kang]
.IP \(bu 2
Now builder creates target recursive subdirectories even if it doesn\(aqt
exist yet, rather than siliently fails.
[\fI\%#8\fP, \fI\%#9\fP by Philipp Volguine]
.IP \(bu 2
Merged recent changes from libsass 1.0.1: \fI\%57a2f62\-\-v1.0.1\fP\&.
.INDENT 2.0
.IP \(bu 2
Supports \fI\%variable arguments\fP\&.
.IP \(bu 2
Supports sourcemaps.
.UNINDENT
.UNINDENT
.SS Version 0.2.4
.sp
Released on December 4, 2012.
.INDENT 0.0
.IP \(bu 2
Added \fBsassc\fP CLI executable script.
.IP \(bu 2
Added \fBsass.OUTPUT_STYLES\fP constant map.
.IP \(bu 2
Merged recent changes from libsass upstream:
\fI\%e997102\-\-a84b181\fP\&.
.UNINDENT
.SS Version 0.2.3
.sp
Released on October 24, 2012.
.INDENT 0.0
.IP \(bu 2
\fBsassutils.distutils\fP: Prevent double monkey patch of \fBsdist\fP\&.
.IP \(bu 2
Merged upstream changes of libsass.
.UNINDENT
.SS Version 0.2.2
.sp
Released on September 28, 2012.
.INDENT 0.0
.IP \(bu 2
Fixed a link error on PyPy and Linux.
.IP \(bu 2
Fixed build errors on Windows.
.UNINDENT
.SS Version 0.2.1
.sp
Released on September 12, 2012.
.INDENT 0.0
.IP \(bu 2
Support Windows.
.UNINDENT
.SS Version 0.2.0
.sp
Released on August 24, 2012.
.INDENT 0.0
.IP \(bu 2
Added new \fBsassutils\fP package.
.INDENT 2.0
.IP \(bu 2
Added \fBsassutils.builder\fP module to build the whole directory
at a time.
.IP \(bu 2
Added \fBsassutils.distutils\fP module for \fI\%distutils\fP and
\fBsetuptools\fP integration.
.IP \(bu 2
Added \fBsassutils.wsgi\fP module which provides a development\-purpose
WSGI middleware.
.UNINDENT
.IP \(bu 2
Added \fBbuild_sass\fP command for
\fI\%distutils\fP/\fBsetuptools\fP\&.
.UNINDENT
.SS Version 0.1.1
.sp
Released on August 18, 2012.
.INDENT 0.0
.IP \(bu 2
Fixed segmentation fault for reading \fBfilename\fP which does not exist.
Now it raises a proper \fBexceptions.IOError\fP exception.
.UNINDENT
.SS Version 0.1.0
.sp
Released on August 17, 2012.  Initial version.
.SH REFERENCES
.SS \fI\%pysassc\fP \-\-\- SassC compliant command line interface
.sp
This provides \fI\%SassC\fP compliant CLI executable named \fBpysassc\fP:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
$ pysassc
Usage: pysassc [options] SCSS_FILE [CSS_FILE]
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
There are options as well:
.INDENT 0.0
.TP
.B \-t <style>, \-\-style <style>
Coding style of the compiled result.  The same as \fBsass.compile()\fP
function\(aqs \fBoutput_style\fP keyword argument.  Default is \fBnested\fP\&.
.UNINDENT
.INDENT 0.0
.TP
.B \-s <style>, \-\-output\-style <style>
Alias for \-t / \-\-style.
.sp
Deprecated since version 0.11.0.

.UNINDENT
.INDENT 0.0
.TP
.B \-I <dir>, \-\-include\-path <dir>
Optional directory path to find \fB@import\fPed (S)CSS files.
Can be multiply used.
.UNINDENT
.INDENT 0.0
.TP
.B \-m, \-g, \-\-sourcemap
Emit source map.  Requires the second argument (output CSS filename).
The filename of source map will be the output CSS filename followed by
\fB\&.map\fP\&.
.sp
New in version 0.4.0.

.UNINDENT
.INDENT 0.0
.TP
.B \-p, \-\-precision
Set the precision for numbers. Default is 5.
.sp
New in version 0.7.0.

.UNINDENT
.INDENT 0.0
.TP
.B \-\-source\-comments
Include debug info in output.
.sp
New in version 0.11.0.

.UNINDENT
.INDENT 0.0
.TP
.B \-\-sourcemap\-file
Output file for source map
.sp
New in version 0.17.0.

.UNINDENT
.INDENT 0.0
.TP
.B \-\-sourcemap\-contents
Embed sourcesContent in source map.
.sp
New in version 0.17.0.

.UNINDENT
.INDENT 0.0
.TP
.B \-\-sourcemap\-embed
Embed sourceMappingUrl as data URI
.sp
New in version 0.17.0.

.UNINDENT
.INDENT 0.0
.TP
.B \-\-omit\-sourcemap\-url
Omit source map URL comment from output
.sp
New in version 0.17.0.

.UNINDENT
.INDENT 0.0
.TP
.B \-\-sourcemap\-root
Base path, will be emitted to sourceRoot in source\-map as is
.sp
New in version 0.17.0.

.UNINDENT
.INDENT 0.0
.TP
.B \-v, \-\-version
Prints the program version.
.UNINDENT
.INDENT 0.0
.TP
.B \-h, \-\-help
Prints the help message.
.UNINDENT
.SS \fI\%sass\fP \-\-\- Binding of \fBlibsass\fP
.sp
This simple C extension module provides a very simple binding of \fBlibsass\fP,
which is written in C/C++.  It contains only one function and one exception
type.
.sp
.nf
.ft C
>>> import sass
>>> sass.compile(string=\(aqa { b { color: blue; } }\(aq)
\(aqa b {
  color: blue; }
\(aq
.ft P
.fi
.INDENT 0.0
.TP
.B exception sass.CompileError(msg)
The exception type that is raised by \fI\%compile()\fP\&.
It is a subtype of \fBexceptions.ValueError\fP\&.
.UNINDENT
.INDENT 0.0
.TP
.B sass.MODES = frozenset({\(aqdirname\(aq, \(aqfilename\(aq, \(aqstring\(aq})
(\fI\%frozenset\fP) The set of keywords \fI\%compile()\fP can take.
.UNINDENT
.INDENT 0.0
.TP
.B sass.OUTPUT_STYLES = {\(aqcompact\(aq: 2, \(aqcompressed\(aq: 3, \(aqexpanded\(aq: 1, \(aqnested\(aq: 0}
(\fI\%collections.abc.Mapping\fP) The dictionary of output styles.
Keys are output name strings, and values are flag integers.
.UNINDENT
.INDENT 0.0
.TP
.B sass.SOURCE_COMMENTS = {\(aqdefault\(aq: 1, \(aqline_numbers\(aq: 1, \(aqmap\(aq: 2, \(aqnone\(aq: 0}
(\fI\%collections.abc.Mapping\fP) The dictionary of source comments styles.
Keys are mode names, and values are corresponding flag integers.
.sp
New in version 0.4.0.

.sp
Deprecated since version 0.6.0.

.UNINDENT
.INDENT 0.0
.TP
.B class sass.SassColor(r, g, b, a)
.UNINDENT
.INDENT 0.0
.TP
.B class sass.SassError(msg)
.UNINDENT
.INDENT 0.0
.TP
.B class sass.SassFunction(name, arguments, callable_)
Custom function for Sass.  It can be instantiated using
\fI\%from_lambda()\fP and \fI\%from_named_function()\fP as well.
.INDENT 7.0
.TP
.B Parameters
.INDENT 7.0
.IP \(bu 2
\fBname\fP (\fI\%str\fP) \-\- the function name
.IP \(bu 2
\fBarguments\fP (\fI\%collections.abc.Sequence\fP) \-\- the argument names
.IP \(bu 2
\fBcallable\fP (\fI\%collections.abc.Callable\fP) \-\- the actual function to be called
.UNINDENT
.UNINDENT
.sp
New in version 0.7.0.

.INDENT 7.0
.TP
.B classmethod from_lambda(name, lambda_)
Make a \fI\%SassFunction\fP object from the given \fBlambda_\fP
function.  Since lambda functions don\(aqt have their name, it need
its \fBname\fP as well.  Arguments are automatically inspected.
.INDENT 7.0
.TP
.B Parameters
.INDENT 7.0
.IP \(bu 2
\fBname\fP (\fI\%str\fP) \-\- the function name
.IP \(bu 2
\fBlambda\fP (\fBtypes.LambdaType\fP) \-\- the actual lambda function to be called
.UNINDENT
.TP
.B Returns
a custom function wrapper of the \fBlambda_\fP function
.TP
.B Return type
\fI\%SassFunction\fP
.UNINDENT
.UNINDENT
.INDENT 7.0
.TP
.B classmethod from_named_function(function)
Make a \fI\%SassFunction\fP object from the named \fBfunction\fP\&.
Function name and arguments are automatically inspected.
.INDENT 7.0
.TP
.B Parameters
\fBfunction\fP (\fBtypes.FunctionType\fP) \-\- the named function to be called
.TP
.B Returns
a custom function wrapper of the \fBfunction\fP
.TP
.B Return type
\fI\%SassFunction\fP
.UNINDENT
.UNINDENT
.INDENT 7.0
.TP
.B property signature
Signature string of the function.
.UNINDENT
.UNINDENT
.INDENT 0.0
.TP
.B class sass.SassList(items, separator, bracketed=False)
.UNINDENT
.INDENT 0.0
.TP
.B class sass.SassMap(*args, **kwargs)
Because sass maps can have mapping types as keys, we need an immutable
hashable mapping type.
.sp
New in version 0.7.0.

.UNINDENT
.INDENT 0.0
.TP
.B class sass.SassNumber(value, unit)
.UNINDENT
.INDENT 0.0
.TP
.B class sass.SassWarning(msg)
.UNINDENT
.INDENT 0.0
.TP
.B sass.and_join(strings)
Join the given \fBstrings\fP by commas with last \fI\(aq and \(aq\fP conjuction.
.sp
.nf
.ft C
>>> and_join([\(aqKorea\(aq, \(aqJapan\(aq, \(aqChina\(aq, \(aqTaiwan\(aq])
\(aqKorea, Japan, China, and Taiwan\(aq
.ft P
.fi
.INDENT 7.0
.TP
.B Parameters
\fBstrings\fP \-\- a list of words to join
.TP
.B Returns
a joined string
.TP
.B Return type
\fI\%str\fP, \fBbasestring\fP
.UNINDENT
.UNINDENT
.INDENT 0.0
.TP
.B sass.compile(**kwargs)
There are three modes of parameters \fI\%compile()\fP can take:
\fBstring\fP, \fBfilename\fP, and \fBdirname\fP\&.
.sp
The \fBstring\fP parameter is the most basic way to compile Sass.
It simply takes a string of Sass code, and then returns a compiled
CSS string.
.INDENT 7.0
.TP
.B Parameters
.INDENT 7.0
.IP \(bu 2
\fBstring\fP (\fI\%str\fP) \-\- Sass source code to compile.  it\(aqs exclusive to
\fBfilename\fP and \fBdirname\fP parameters
.IP \(bu 2
\fBoutput_style\fP (\fI\%str\fP) \-\- an optional coding style of the compiled result.
choose one of: \fB\(aqnested\(aq\fP (default), \fB\(aqexpanded\(aq\fP,
\fB\(aqcompact\(aq\fP, \fB\(aqcompressed\(aq\fP
.IP \(bu 2
\fBsource_comments\fP (\fI\%bool\fP) \-\- whether to add comments about source lines.
\fBFalse\fP by default
.IP \(bu 2
\fBsource_map_contents\fP (\fI\%bool\fP) \-\- embed include contents in map
.IP \(bu 2
\fBsource_map_embed\fP (\fI\%bool\fP) \-\- embed sourceMappingUrl as data URI
.IP \(bu 2
\fBomit_source_map_url\fP (\fI\%bool\fP) \-\- omit source map URL comment from output
.IP \(bu 2
\fBsource_map_root\fP (\fI\%str\fP) \-\- base path, will be emitted in source map as is
.IP \(bu 2
\fBinclude_paths\fP (\fI\%collections.abc.Sequence\fP) \-\- an optional list of paths to find \fB@import\fPed
Sass/CSS source files
.IP \(bu 2
\fBprecision\fP (\fI\%int\fP) \-\- optional precision for numbers. \fB5\fP by default.
.IP \(bu 2
\fBcustom_functions\fP (\fI\%set\fP,
\fI\%collections.abc.Sequence\fP,
\fI\%collections.abc.Mapping\fP) \-\- optional mapping of custom functions.
see also below \fI\%custom functions\fP description
.IP \(bu 2
\fBcustom_import_extensions\fP \-\- (ignored, for backward compatibility)
.IP \(bu 2
\fBindented\fP (\fI\%bool\fP) \-\- optional declaration that the string is Sass, not SCSS
formatted. \fBFalse\fP by default
.IP \(bu 2
\fBimporters\fP (\fI\%collections.abc.Callable\fP) \-\- optional callback functions.
see also below \fI\%importer callbacks\fP description
.UNINDENT
.TP
.B Returns
the compiled CSS string
.TP
.B Return type
\fI\%str\fP
.TP
.B Raises
\fBsass.CompileError\fP \-\- when it fails for any reason
(for example the given Sass has broken syntax)
.UNINDENT
.sp
The \fBfilename\fP is the most commonly used way.  It takes a string of
Sass filename, and then returns a compiled CSS string.
.INDENT 7.0
.TP
.B Parameters
.INDENT 7.0
.IP \(bu 2
\fBfilename\fP (\fI\%str\fP) \-\- the filename of Sass source code to compile.
it\(aqs exclusive to \fBstring\fP and \fBdirname\fP parameters
.IP \(bu 2
\fBoutput_style\fP (\fI\%str\fP) \-\- an optional coding style of the compiled result.
choose one of: \fB\(aqnested\(aq\fP (default), \fB\(aqexpanded\(aq\fP,
\fB\(aqcompact\(aq\fP, \fB\(aqcompressed\(aq\fP
.IP \(bu 2
\fBsource_comments\fP (\fI\%bool\fP) \-\- whether to add comments about source lines.
\fBFalse\fP by default
.IP \(bu 2
\fBsource_map_filename\fP (\fI\%str\fP) \-\- use source maps and indicate the source map
output filename.  \fBNone\fP means not
using source maps.  \fBNone\fP by default.
.IP \(bu 2
\fBsource_map_contents\fP (\fI\%bool\fP) \-\- embed include contents in map
.IP \(bu 2
\fBsource_map_embed\fP (\fI\%bool\fP) \-\- embed sourceMappingUrl as data URI
.IP \(bu 2
\fBomit_source_map_url\fP (\fI\%bool\fP) \-\- omit source map URL comment from output
.IP \(bu 2
\fBsource_map_root\fP (\fI\%str\fP) \-\- base path, will be emitted in source map as is
.IP \(bu 2
\fBinclude_paths\fP (\fI\%collections.abc.Sequence\fP) \-\- an optional list of paths to find \fB@import\fPed
Sass/CSS source files
.IP \(bu 2
\fBprecision\fP (\fI\%int\fP) \-\- optional precision for numbers. \fB5\fP by default.
.IP \(bu 2
\fBcustom_functions\fP (\fI\%set\fP,
\fI\%collections.abc.Sequence\fP,
\fI\%collections.abc.Mapping\fP) \-\- optional mapping of custom functions.
see also below \fI\%custom functions\fP description
.IP \(bu 2
\fBcustom_import_extensions\fP \-\- (ignored, for backward compatibility)
.IP \(bu 2
\fBimporters\fP (\fI\%collections.abc.Callable\fP) \-\- optional callback functions.
see also below \fI\%importer callbacks\fP description
.UNINDENT
.TP
.B Returns
the compiled CSS string, or a pair of the compiled CSS string
and the source map string if \fBsource_map_filename\fP is set
.TP
.B Return type
\fI\%str\fP, \fI\%tuple\fP
.TP
.B Raises
.INDENT 7.0
.IP \(bu 2
\fBsass.CompileError\fP \-\- when it fails for any reason
(for example the given Sass has broken syntax)
.IP \(bu 2
\fBexceptions.IOError\fP \-\- when the \fBfilename\fP doesn\(aqt exist or
cannot be read
.UNINDENT
.UNINDENT
.sp
The \fBdirname\fP is useful for automation.  It takes a pair of paths.
The first of the \fBdirname\fP pair refers the source directory, contains
several Sass source files to compiled.  Sass source files can be nested
in directories.  The second of the pair refers the output directory
that compiled CSS files would be saved.  Directory tree structure of
the source directory will be maintained in the output directory as well.
If \fBdirname\fP parameter is used the function returns \fBNone\fP\&.
.INDENT 7.0
.TP
.B Parameters
.INDENT 7.0
.IP \(bu 2
\fBdirname\fP (\fI\%tuple\fP) \-\- a pair of \fB(source_dir, output_dir)\fP\&.
it\(aqs exclusive to \fBstring\fP and \fBfilename\fP
parameters
.IP \(bu 2
\fBoutput_style\fP (\fI\%str\fP) \-\- an optional coding style of the compiled result.
choose one of: \fB\(aqnested\(aq\fP (default), \fB\(aqexpanded\(aq\fP,
\fB\(aqcompact\(aq\fP, \fB\(aqcompressed\(aq\fP
.IP \(bu 2
\fBsource_comments\fP (\fI\%bool\fP) \-\- whether to add comments about source lines.
\fBFalse\fP by default
.IP \(bu 2
\fBsource_map_contents\fP (\fI\%bool\fP) \-\- embed include contents in map
.IP \(bu 2
\fBsource_map_embed\fP (\fI\%bool\fP) \-\- embed sourceMappingUrl as data URI
.IP \(bu 2
\fBomit_source_map_url\fP (\fI\%bool\fP) \-\- omit source map URL comment from output
.IP \(bu 2
\fBsource_map_root\fP (\fI\%str\fP) \-\- base path, will be emitted in source map as is
.IP \(bu 2
\fBinclude_paths\fP (\fI\%collections.abc.Sequence\fP) \-\- an optional list of paths to find \fB@import\fPed
Sass/CSS source files
.IP \(bu 2
\fBprecision\fP (\fI\%int\fP) \-\- optional precision for numbers. \fB5\fP by default.
.IP \(bu 2
\fBcustom_functions\fP (\fI\%set\fP,
\fI\%collections.abc.Sequence\fP,
\fI\%collections.abc.Mapping\fP) \-\- optional mapping of custom functions.
see also below \fI\%custom functions\fP description
.IP \(bu 2
\fBcustom_import_extensions\fP \-\- (ignored, for backward compatibility)
.UNINDENT
.TP
.B Raises
\fBsass.CompileError\fP \-\- when it fails for any reason
(for example the given Sass has broken syntax)
.UNINDENT
.sp
The \fBcustom_functions\fP parameter can take three types of forms:
.sp
\fI\%set\fP/\fI\%Sequence\fP of \fI\%SassFunction\fPs
.INDENT 7.0
.INDENT 3.5
It is the most general form.  Although pretty verbose, it can take
any kind of callables like type objects, unnamed functions,
and user\-defined callables.
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
sass.compile(
    ...,
    custom_functions={
        sass.SassFunction(\(aqfunc\-name\(aq, (\(aq$a\(aq, \(aq$b\(aq), some_callable),
        ...
    }
)
.ft P
.fi
.UNINDENT
.UNINDENT
.UNINDENT
.UNINDENT
.INDENT 7.0
.TP
.B \fI\%Mapping\fP of names to functions
Less general, but easier\-to\-use form.  Although it\(aqs not it can take
any kind of callables, it can take any kind of \fIfunctions\fP defined
using \fI\%def\fP/\fI\%lambda\fP syntax.
It cannot take callables other than them since inspecting arguments
is not always available for every kind of callables.
.INDENT 7.0
.INDENT 3.5
.sp
.nf
.ft C
sass.compile(
    ...,
    custom_functions={
        \(aqfunc\-name\(aq: lambda a, b: ...,
        ...
    }
)
.ft P
.fi
.UNINDENT
.UNINDENT
.UNINDENT
.sp
\fI\%set\fP/\fI\%Sequence\fP of named functions
.INDENT 7.0
.INDENT 3.5
Not general, but the easiest\-to\-use form for \fInamed\fP functions.
It can take only named functions, defined using \fI\%def\fP\&.
It cannot take lambdas sinc names are unavailable for them.
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
def func_name(a, b):
    return ...

sass.compile(
    ...,
    custom_functions={func_name}
)
.ft P
.fi
.UNINDENT
.UNINDENT
.UNINDENT
.UNINDENT
.sp
Newer versions of \fBlibsass\fP allow developers to define callbacks to be
called and given a chance to process \fB@import\fP directives. You can
define yours by passing in a list of callables via the \fBimporters\fP
parameter. The callables must be passed as 2\-tuples in the form:
.INDENT 7.0
.INDENT 3.5
.sp
.nf
.ft C
(priority_int, callback_fn)
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
A priority of zero is acceptable; priority determines the order callbacks
are attempted.
.sp
These callbacks can accept one or two string arguments. The first argument
is the path that was passed to the \fB@import\fP directive; the second
(optional) argument is the previous resolved path, where the \fB@import\fP
directive was found. The callbacks must either return \fBNone\fP to
indicate the path wasn\(aqt handled by that callback (to continue with others
or fall back on internal \fBlibsass\fP filesystem behaviour) or a list of
one or more tuples, each in one of three forms:
.INDENT 7.0
.IP \(bu 2
A 1\-tuple representing an alternate path to handle internally; or,
.IP \(bu 2
A 2\-tuple representing an alternate path and the content that path
represents; or,
.IP \(bu 2
A 3\-tuple representing the same as the 2\-tuple with the addition of a
"sourcemap".
.UNINDENT
.sp
All tuple return values must be strings. As a not overly realistic
example:
.INDENT 7.0
.INDENT 3.5
.sp
.nf
.ft C
def my_importer(path, prev):
    return [(path, \(aq#\(aq + path + \(aq { color: red; }\(aq)]

sass.compile(
        ...,
        importers=[(0, my_importer)]
    )
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
Now, within the style source, attempting to \fB@import \(aqbutton\(aq;\fP will
instead attach \fBcolor: red\fP as a property of an element with the
imported name.
.sp
New in version 0.4.0: Added \fBsource_comments\fP and \fBsource_map_filename\fP parameters.

.sp
Changed in version 0.6.0: The \fBsource_comments\fP parameter becomes to take only \fI\%bool\fP
instead of \fI\%str\fP\&.

.sp
Deprecated since version 0.6.0: Values like \fB\(aqnone\(aq\fP, \fB\(aqline_numbers\(aq\fP, and \fB\(aqmap\(aq\fP for
the \fBsource_comments\fP parameter are deprecated.

.sp
New in version 0.7.0: Added \fBprecision\fP parameter.

.sp
New in version 0.7.0: Added \fBcustom_functions\fP parameter.

.sp
New in version 0.11.0: \fBsource_map_filename\fP no longer implies \fBsource_comments\fP\&.

.sp
New in version 0.17.0: Added \fBsource_map_contents\fP, \fBsource_map_embed\fP,
\fBomit_source_map_url\fP, and \fBsource_map_root\fP parameters.

.sp
New in version 0.18.0: The importer callbacks can now take a second argument, the previously\-
resolved path, so that importers can do relative path resolution.

.UNINDENT
.SS \fI\%sassutils\fP \-\-\- Additional utilities related to Sass
.sp
This package provides several additional utilities related to Sass
which depends on libsass core (\fBsass\fP module).
.SS \fI\%sassutils.builder\fP \-\-\- Build the whole directory
.INDENT 0.0
.TP
.B class sassutils.builder.Manifest(sass_path, css_path=None, wsgi_path=None, strip_extension=None)
Building manifest of Sass/SCSS.
.INDENT 7.0
.TP
.B Parameters
.INDENT 7.0
.IP \(bu 2
\fBsass_path\fP (\fI\%str\fP, \fBbasestring\fP) \-\- the path of the directory that contains Sass/SCSS
source files
.IP \(bu 2
\fBcss_path\fP (\fI\%str\fP, \fBbasestring\fP) \-\- the path of the directory to store compiled CSS
files
.IP \(bu 2
\fBstrip_extension\fP (\fI\%bool\fP) \-\- whether to remove the original file extension
.UNINDENT
.UNINDENT
.INDENT 7.0
.TP
.B build(package_dir, output_style=\(aqnested\(aq)
Builds the Sass/SCSS files in the specified \fBsass_path\fP\&.
It finds \fBsass_path\fP and locates \fBcss_path\fP
as relative to the given \fBpackage_dir\fP\&.
.INDENT 7.0
.TP
.B Parameters
.INDENT 7.0
.IP \(bu 2
\fBpackage_dir\fP (\fI\%str\fP, \fBbasestring\fP) \-\- the path of package directory
.IP \(bu 2
\fBoutput_style\fP (\fI\%str\fP) \-\- an optional coding style of the compiled result.
choose one of: \fB\(aqnested\(aq\fP (default),
\fB\(aqexpanded\(aq\fP, \fB\(aqcompact\(aq\fP, \fB\(aqcompressed\(aq\fP
.UNINDENT
.TP
.B Returns
the set of compiled CSS filenames
.TP
.B Return type
\fI\%frozenset\fP
.UNINDENT
.sp
New in version 0.6.0: The \fBoutput_style\fP parameter.

.UNINDENT
.INDENT 7.0
.TP
.B build_one(package_dir, filename, source_map=False)
Builds one Sass/SCSS file.
.INDENT 7.0
.TP
.B Parameters
.INDENT 7.0
.IP \(bu 2
\fBpackage_dir\fP (\fI\%str\fP, \fBbasestring\fP) \-\- the path of package directory
.IP \(bu 2
\fBfilename\fP (\fI\%str\fP, \fBbasestring\fP) \-\- the filename of Sass/SCSS source to compile
.IP \(bu 2
\fBsource_map\fP (\fI\%bool\fP) \-\- whether to use source maps.  if \fBTrue\fP
it also write a source map to a \fBfilename\fP
followed by \fB\&.map\fP suffix.
default is \fBFalse\fP
.UNINDENT
.TP
.B Returns
the filename of compiled CSS
.TP
.B Return type
\fI\%str\fP, \fBbasestring\fP
.UNINDENT
.sp
New in version 0.4.0: Added optional \fBsource_map\fP parameter.

.UNINDENT
.INDENT 7.0
.TP
.B resolve_filename(package_dir, filename)
Gets a proper full relative path of Sass source and
CSS source that will be generated, according to \fBpackage_dir\fP
and \fBfilename\fP\&.
.INDENT 7.0
.TP
.B Parameters
.INDENT 7.0
.IP \(bu 2
\fBpackage_dir\fP (\fI\%str\fP, \fBbasestring\fP) \-\- the path of package directory
.IP \(bu 2
\fBfilename\fP (\fI\%str\fP, \fBbasestring\fP) \-\- the filename of Sass/SCSS source to compile
.UNINDENT
.TP
.B Returns
a pair of (sass, css) path
.TP
.B Return type
\fI\%tuple\fP
.UNINDENT
.UNINDENT
.INDENT 7.0
.TP
.B unresolve_filename(package_dir, filename)
Retrieves the probable source path from the output filename.  Pass
in a .css path to get out a .scss path.
.INDENT 7.0
.TP
.B Parameters
.INDENT 7.0
.IP \(bu 2
\fBpackage_dir\fP (\fI\%str\fP) \-\- the path of the package directory
.IP \(bu 2
\fBfilename\fP (\fI\%str\fP) \-\- the css filename
.UNINDENT
.TP
.B Returns
the scss filename
.TP
.B Return type
\fI\%str\fP
.UNINDENT
.UNINDENT
.UNINDENT
.INDENT 0.0
.TP
.B sassutils.builder.SUFFIXES = frozenset({\(aqsass\(aq, \(aqscss\(aq})
(\fI\%frozenset\fP) The set of supported filename suffixes.
.UNINDENT
.INDENT 0.0
.TP
.B sassutils.builder.SUFFIX_PATTERN = re.compile(\(aq[.](sass|scss)$\(aq)
(\fBre.RegexObject\fP) The regular expression pattern which matches to
filenames of supported \fI\%SUFFIXES\fP\&.
.UNINDENT
.INDENT 0.0
.TP
.B sassutils.builder.build_directory(sass_path, css_path, output_style=\(aqnested\(aq, _root_sass=None, _root_css=None, strip_extension=False)
Compiles all Sass/SCSS files in \fBpath\fP to CSS.
.INDENT 7.0
.TP
.B Parameters
.INDENT 7.0
.IP \(bu 2
\fBsass_path\fP (\fI\%str\fP, \fBbasestring\fP) \-\- the path of the directory which contains source files
to compile
.IP \(bu 2
\fBcss_path\fP (\fI\%str\fP, \fBbasestring\fP) \-\- the path of the directory compiled CSS files will go
.IP \(bu 2
\fBoutput_style\fP (\fI\%str\fP) \-\- an optional coding style of the compiled result.
choose one of: \fB\(aqnested\(aq\fP (default), \fB\(aqexpanded\(aq\fP,
\fB\(aqcompact\(aq\fP, \fB\(aqcompressed\(aq\fP
.UNINDENT
.TP
.B Returns
a dictionary of source filenames to compiled CSS filenames
.TP
.B Return type
\fI\%collections.abc.Mapping\fP
.UNINDENT
.sp
New in version 0.6.0: The \fBoutput_style\fP parameter.

.UNINDENT
.SS \fI\%sassutils.distutils\fP \-\-\- \fBsetuptools\fP/\fI\%distutils\fP integration
.sp
This module provides extensions (and some magical monkey\-patches, sorry)
of the standard \fI\%distutils\fP and \fBsetuptools\fP (now it\(aqs named
Distribute) for libsass.
.sp
To use this, add \fBlibsass\fP into \fBsetup_requires\fP (not \fBinstall_requires\fP)
option of the \fBsetup.py\fP script:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
from setuptools import setup

setup(
    # ...,
    setup_requires=[\(aqlibsass >= 0.6.0\(aq]
)
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
It will adds \fI\%build_sass\fP command to the \fBsetup.py\fP script:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
$ python setup.py build_sass
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
This commands builds Sass/SCSS files to compiled CSS files of the project
and makes the package archive (made by \fBsdist\fP,
\fBbdist\fP, and so on) to include these compiled
CSS files.
.sp
To set the directory of Sass/SCSS source files and the directory to
store compiled CSS files, specify \fBsass_manifests\fP option:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
from setuptools import find_packages, setup

setup(
    name=\(aqYourPackage\(aq,
    packages=find_packages(),
    sass_manifests={
        \(aqyour.webapp\(aq: (\(aqstatic/sass\(aq, \(aqstatic/css\(aq)
    },
    setup_requires=[\(aqlibsass >= 0.6.0\(aq]
)
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
The option should be a mapping of package names to pairs of paths, e.g.:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
{
    \(aqpackage\(aq: (\(aqstatic/sass\(aq, \(aqstatic/css\(aq),
    \(aqpackage.name\(aq: (\(aqstatic/scss\(aq, \(aqstatic\(aq)
}
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
The option can also be a mapping of package names to manifest dictionaries:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
{
    \(aqpackage\(aq: {
        \(aqsass_path\(aq: \(aqstatic/sass\(aq,
        \(aqcss_path\(aq: \(aqstatic/css\(aq,
        \(aqstrip_extension\(aq: True,
    },
}
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
New in version 0.15.0: Added \fBstrip_extension\fP so \fBa.scss\fP is compiled to \fBa.css\fP instead
of \fBa.scss.css\fP\&.  This option will default to \fBTrue\fP in the future.

.sp
New in version 0.6.0: Added \fB\-\-output\-style\fP/\fB\-s\fP option to \fI\%build_sass\fP command.

.INDENT 0.0
.TP
.B class sassutils.distutils.build_sass(dist, **kw)
Builds Sass/SCSS files to CSS files.
.INDENT 7.0
.TP
.B finalize_options()
Set final values for all the options that this command supports.
This is always called as late as possible, ie.  after any option
assignments from the command\-line or from other commands have been
done.  Thus, this is the place to code option dependencies: if
\(aqfoo\(aq depends on \(aqbar\(aq, then it is safe to set \(aqfoo\(aq from \(aqbar\(aq as
long as \(aqfoo\(aq still has the same value it was assigned in
\(aqinitialize_options()\(aq.
.sp
This method must be implemented by all command classes.
.UNINDENT
.INDENT 7.0
.TP
.B get_package_dir(package)
Returns the directory, relative to the top of the source
distribution, where package \fBpackage\fP should be found
(at least according to the \fBpackage_dir\fP option, if any).
.sp
Copied from \fBdistutils.command.build_py.get_package_dir()\fP
method.
.UNINDENT
.INDENT 7.0
.TP
.B initialize_options()
Set default values for all the options that this command
supports.  Note that these defaults may be overridden by other
commands, by the setup script, by config files, or by the
command\-line.  Thus, this is not the place to code dependencies
between options; generally, \(aqinitialize_options()\(aq implementations
are just a bunch of "self.foo = None" assignments.
.sp
This method must be implemented by all command classes.
.UNINDENT
.INDENT 7.0
.TP
.B run()
A command\(aqs raison d\(aqetre: carry out the action it exists to
perform, controlled by the options initialized in
\(aqinitialize_options()\(aq, customized by other commands, the setup
script, the command\-line, and config files, and finalized in
\(aqfinalize_options()\(aq.  All terminal output and filesystem
interaction should be done by \(aqrun()\(aq.
.sp
This method must be implemented by all command classes.
.UNINDENT
.UNINDENT
.INDENT 0.0
.TP
.B sassutils.distutils.validate_manifests(dist, attr, value)
Verifies that \fBvalue\fP is an expected mapping of package to
\fBsassutils.builder.Manifest\fP\&.
.UNINDENT
.SS \fI\%sassutils.wsgi\fP \-\-\- WSGI middleware for development purpose
.INDENT 0.0
.TP
.B class sassutils.wsgi.SassMiddleware(app, manifests, package_dir={}, error_status=\(aq200 OK\(aq)
WSGI middleware for development purpose.  Everytime a CSS file has
requested it finds a matched Sass/SCSS source file and then compiled
it into CSS.
.sp
It shows syntax errors in three ways:
.INDENT 7.0
.TP
.B Heading comment
The result CSS includes detailed error message in the heading
CSS comment e.g.:
.INDENT 7.0
.INDENT 3.5
.sp
.nf
.ft C
/*
Error: invalid property name
*/
.ft P
.fi
.UNINDENT
.UNINDENT
.TP
.B Red text in \fBbody:before\fP
The result CSS draws detailed error message in \fB:before\fP
pseudo\-class of \fBbody\fP element e.g.:
.INDENT 7.0
.INDENT 3.5
.sp
.nf
.ft C
body:before {
    content: \(aqError: invalid property name\(aq;
    color: maroon;
    background\-color: white;
}
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
In most cases you could be aware of syntax error by refreshing your
working document because it will removes all other styles and leaves
only a red text.
.TP
.B \fI\%logging\fP
It logs syntax errors if exist during compilation to
\fBsassutils.wsgi.SassMiddleware\fP logger with level \fBERROR\fP\&.
.sp
To enable this:
.INDENT 7.0
.INDENT 3.5
.sp
.nf
.ft C
from logging import Formatter, StreamHandler, getLogger
logger = getLogger(\(aqsassutils.wsgi.SassMiddleware\(aq)
handler = StreamHandler(level=logging.ERROR)
formatter = Formatter(fmt=\(aq*\(aq * 80 + \(aq\en%(message)s\en\(aq + \(aq*\(aq * 80)
handler.setFormatter(formatter)
logger.addHandler(handler)
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
Or simply:
.INDENT 7.0
.INDENT 3.5
.sp
.nf
.ft C
import logging
logging.basicConfig()
.ft P
.fi
.UNINDENT
.UNINDENT
.UNINDENT
.INDENT 7.0
.TP
.B Parameters
.INDENT 7.0
.IP \(bu 2
\fBapp\fP (\fI\%collections.abc.Callable\fP) \-\- the WSGI application to wrap
.IP \(bu 2
\fBmanifests\fP (\fI\%collections.abc.Mapping\fP) \-\- build settings.  the same format to
\fBsetup.py\fP script\(aqs \fBsass_manifests\fP
option
.IP \(bu 2
\fBpackage_dir\fP (\fI\%collections.abc.Mapping\fP) \-\- optional mapping of package names to directories.
the same format to \fBsetup.py\fP script\(aqs
\fBpackage_dir\fP option
.UNINDENT
.UNINDENT
.sp
Changed in version 0.4.0: It creates also source map files with filenames followed by
\fB\&.map\fP suffix.

.sp
New in version 0.8.0: It logs syntax errors if exist during compilation to
\fBsassutils.wsgi.SassMiddleware\fP logger with level \fBERROR\fP\&.

.INDENT 7.0
.TP
.B static quote_css_string(s)
Quotes a string as CSS string literal.
.UNINDENT
.UNINDENT
.SH CREDIT
.sp
Hong Minhee wrote this Python binding of \fI\%LibSass\fP\&.
.sp
Hampton Catlin and Aaron Leung wrote \fI\%LibSass\fP, which is portable C/C++
implementation of \fI\%Sass\fP\&.
.sp
Hampton Catlin originally designed \fI\%Sass\fP language and wrote the first
reference implementation of it in Ruby.
.sp
The above three softwares are all distributed under \fI\%MIT license\fP\&.
.SH OPEN SOURCE
.INDENT 0.0
.TP
.B GitHub (Git repository + issues)
\fI\%https://github.com/sass/libsass\-python\fP
.TP
.B Azure Pipelines CI (linux + windows)
\fI\%https://dev.azure.com/asottile/asottile/_build/latest?definitionId=22&branchName=master\fP
\fI\%Build Status\fP.TP
.B Azure Pipelines Coverage (Test coverage)
\fI\%https://dev.azure.com/asottile/asottile/_build/latest?definitionId=22&branchName=master\fP
\fI\%Coverage Status\fP.TP
.B PyPI
\fI\%https://pypi.org/pypi/libsass/\fP
\fI\%PyPI\fP.TP
.B Changelog
changes
.UNINDENT
.SH INDICES AND TABLES
.INDENT 0.0
.IP \(bu 2
genindex
.IP \(bu 2
modindex
.IP \(bu 2
search
.UNINDENT
.SH AUTHOR
Hong Minhee
.SH COPYRIGHT
2021, Hong Minhee
.\" Generated by docutils manpage writer.
.