1 files changed, 4 insertions, 0 deletions

diff --git a/libmat/mutagenstripper.py b/libmat/mutagenstripper.py
index be89178..7e4beed 100644
--- a/libmat/mutagenstripper.py
+++ b/libmat/mutagenstripper.py
@@ -5,17 +5,21 @@ import parser
 
 
 class MutagenStripper(parser.GenericParser):
+    """ Parser using the (awesome) mutagen library. """
     def __init__(self, filename, parser, mime, backup, is_writable, **kwargs):
         super(MutagenStripper, self).__init__(filename, parser, mime, backup, is_writable, **kwargs)
+        self.mfile = None  # This will be instanciated in self._create_mfile()
         self._create_mfile()
 
     def _create_mfile(self):
         raise NotImplementedError
 
     def is_clean(self):
+        """ Check if the file is clean. """
         return not self.mfile.tags
 
     def remove_all(self):
+        """ Remove all harmful metadata. """
         if self.backup:
             self.create_backup_copy()
         self.mfile.delete()