Initialize empty MonadicDict by default.

* wqflask/utility/monads.py (MonadicDict)[__init__]: Set default
dictionary argument to the empty dictionary.

1 files changed, 1 insertions, 1 deletions

diff --git a/wqflask/utility/monads.py b/wqflask/utility/monads.py
index fbcb2c23..d683b0ae 100644
--- a/wqflask/utility/monads.py
+++ b/wqflask/utility/monads.py
@@ -21,7 +21,7 @@ class MonadicDict(UserDict):
     Keys in this dictionary can be any python object, but values must
     be monadic values.
     """
-    def __init__(self, d, convert=True):
+    def __init__(self, d={}, convert=True):
         """
         Initialize monadic dictionary.