Make Python code more idiomatic

whipper/command/cd.py

@@ -357,7 +357,7 @@ Log files will log the path to tracks relative to this directory.
             logger.debug('ripIfNotRipped: path %r' % path)
             trackResult.number = number
 
-            assert type(path) is unicode, "%r is not unicode" % path
+            assert isinstance(path, unicode), "%r is not unicode" % path
             trackResult.filename = path
             if number > 0:
                 trackResult.pregap = self.itable.tracks[number - 1].getPregap()

whipper/command/main.py

@@ -36,7 +36,7 @@ def main():
         ret = cmd.do()
     except SystemError as e:
         sys.stderr.write('whipper: error: %s\n' % e)
-        if (type(e) is common.EjectError and
+        if (isinstance(e, common.EjectError) and
                 cmd.options.eject in ('failure', 'always')):
             eject_device(e.device)
         return 255