Python 3 fixes: convert source to text

In Python 3 the SCSS source code must be decoded from binary to text
before processing. The latest compressor passes a charset argument to
our filter, which will be used. If not passed, it will default to utf-8.

Note that Python 3 support currently depends on the latest (master)
compressor
and a pyScss with this fix incorporated:
wojas/pyScss@e4cf419

NOTE: Tests related to the sprites fail for me, both on python 2.7 and
3.4. The hash is different from what's expected.

Author: wojas

.gitignore

@@ -3,3 +3,5 @@
 tmp/
 .coverage
 htmlcov/
+__pycache__
+*.pyc

django_pyscss/compressor.py

@@ -9,9 +9,11 @@
 
 
 class DjangoScssFilter(FilterBase):
-    compiler = DjangoScss()
+    compiler = None
+
+    def __init__(self, content, attrs=None, filter_type=None, filename=None, charset='utf-8'):
+        self.compiler = DjangoScss(charset=charset)
 
-    def __init__(self, content, attrs=None, filter_type=None, filename=None):
         # It looks like there is a bug in django-compressor because it expects
         # us to accept attrs.
         super(DjangoScssFilter, self).__init__(content, filter_type, filename)

django_pyscss/scss.py

@@ -30,6 +30,12 @@ class DjangoScss(Scss):
     files.
     """
     supported_extensions = ['.scss', '.sass', '.css']
+    charset = 'utf-8'
+
+    def __init__(self, **kwargs):
+        if 'charset' in kwargs:
+            self.charset = kwargs.pop('charset')
+        super(DjangoScss, self).__init__(**kwargs)
 
     def get_file_from_storage(self, filename):
         try:
@@ -87,7 +93,7 @@ def _find_source_file(self, filename, relative_to=None):
             if full_filename:
                 if full_filename not in self.source_file_index:
                     with storage.open(full_filename) as f:
-                        source = f.read()
+                        source = f.read().decode(self.charset)
 
                     source_file = SourceFile(
                         full_filename,