Made the soup a property of the compressor to lower the compressor startup time since the soup is not always required.

compressor/__init__.py

@@ -35,7 +35,6 @@ class Compressor(object):
         self.type = None
         self.output_prefix = output_prefix
         self.split_content = []
-        self.soup = BeautifulSoup(self.content)
 
     def split_contents(self):
         raise NotImplementedError('split_contents must be defined in a subclass')
@@ -48,6 +47,10 @@ class Compressor(object):
             raise UncompressableFileError('"%s" does not exist' % self.storage.path(basename))
         return self.storage.path(basename)
 
+    @property
+    def soup(self):
+        return BeautifulSoup(self.content)
+
     @property
     def mtimes(self):
         return [os.path.getmtime(h[1]) for h in self.split_contents() if h[0] == 'file']