clean up prev commit

lib/util.py

@@ -66,12 +66,14 @@ class FileImportFailed(Exception):
     def __str__(self):
         return _("Failed to import from file.") + "\n" + self.message
 
+
 class FileExportFailed(Exception):
-    def __init__(self, reason=''):
-        self.message = str(reason)
+    def __init__(self, message=''):
+        self.message = str(message)
 
     def __str__(self):
-        return( _("Failed to export to file.") + "\n" + self.message )
+        return _("Failed to export to file.") + "\n" + self.message
+
 
 # Throw this exception to unwind the stack like when an error occurs.
 # However unlike other exceptions the user won't be informed.
@@ -788,6 +790,7 @@ def setup_thread_excepthook():
 def versiontuple(v):
     return tuple(map(int, (v.split("."))))
 
+
 def import_meta(path, validater, load_meta):
     try:
         with open(path, 'r') as f:
@@ -798,13 +801,14 @@ def import_meta(path, validater, load_meta):
         traceback.print_exc(file=sys.stderr)
         raise FileImportFailed(_("Invalid JSON code."))
     except BaseException as e:
-         traceback.print_exc(file=sys.stdout)
-         raise FileImportFailed(e)
+        traceback.print_exc(file=sys.stdout)
+        raise FileImportFailed(e)
+
 
 def export_meta(meta, fileName):
-     try:
-         with open(fileName, 'w+') as f:
+    try:
+        with open(fileName, 'w+') as f:
             json.dump(meta, f, indent=4, sort_keys=True)
-     except (IOError, os.error) as reason:
-         traceback.print_exc(file=sys.stderr)
-         raise FileExportFailed(str(reason))
+    except (IOError, os.error) as e:
+        traceback.print_exc(file=sys.stderr)
+        raise FileExportFailed(e)