minor: pep8 fixes

moa/exceptions.py

@@ -1,59 +1,73 @@
 # Copyright 2009-2011 Mark Fiers
 # The New Zealand Institute for Plant & Food Research
-# 
+#
 # This file is part of Moa - http://github.com/mfiers/Moa
-# 
+#
 # Licensed under the GPL license (see 'COPYING')
-# 
+#
+
 
 class InvalidTemplate(Exception):
     pass
 
+
 class CannotGetAFileLock(Exception):
     """Cannot get a file lock"""
     def __init__(self, f):
         self.d = dir
+
     def __str__(self):
         return "Cannot get a file lock on %s" % self.f
 
+
 class NotAMoaDirectory(Exception):
     """This is not a moa directory"""
     def __init__(self, dir):
         self.dir = dir
+
     def __str__(self):
         return "%s is not a MOA directory" % self.dir
 
+
 class NotAMoaTemplate(Exception):
     """This is not a valid moa template"""
     def __init__(self, template):
         self.template = template
+
     def __str__(self):
         return "%s is not a MOA template" % self.template
 
+
 class MoaFileError(Exception):
     """Error handling a file """
     def __str__(self):
         return "Moa error handling file"
 
+
 class MoaDirNotWritable(Exception):
     """
     Moa directory is not writable
     """
     def __str__(self):
         return "Moa directory (.moa) is not writable"
 
+
 class MoaCommandDoesNotExist(Exception):
     """Command does not exists?"""
     def __str__(self):
         return "Command does not exist"
-
+
+
 class MoaPermissionDenied(Exception):
-    """Permission denied - you do not have the rights to perform this opperation """
+    """Permission denied - you do not have the rights to perform this
+    operation
+
+    """
     def __str__(self):
         return "Permission denied"
 
+
 class MoaInvalidCommandLine(Exception):
     """Invalid command line"""
     def __str__(self):
-        return "Invalid command line" 
-
+        return "Invalid command line"