Refactored

wo/core/exc.py

@@ -0,0 +1,26 @@
+"""WordOps exception classes."""
+
+
+class WOError(Exception):
+    """Generic errors."""
+    def __init__(self, msg):
+        Exception.__init__(self)
+        self.msg = msg
+
+    def __str__(self):
+        return self.msg
+
+
+class WOConfigError(WOError):
+    """Config related errors."""
+    pass
+
+
+class WORuntimeError(WOError):
+    """Generic runtime errors."""
+    pass
+
+
+class WOArgumentError(WOError):
+    """Argument related errors."""
+    pass