The bug regarding novoapi for Python 3.6 is solved. The detail can be found in novoapi_for_python3x/readme.txt

novoapi_for_python3x/utils/json/__init__.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+
+## from https://stackoverflow.com/questions/1447287/format-floats-with-standard-json-module
+class PrettyFloat(float):
+    def __repr__(self):
+        return '%.15g' % self
+
+def pretty_floats(obj):
+    if isinstance(obj, float):
+        return PrettyFloat(obj)
+    elif isinstance(obj, dict):
+        return dict((k, pretty_floats(v)) for k, v in obj.items())
+    elif isinstance(obj, (list, tuple)):
+        return map(pretty_floats, obj)
+    return obj
+
+def rounded_floats(obj, ndigits=15):
+    if isinstance(obj, float):
+        return PrettyFloat(round(obj, ndigits))
+    elif isinstance(obj, dict):
+        return dict((k, rounded_floats(v, ndigits)) for k, v in obj.items())
+    elif isinstance(obj, (list, tuple)):
+        return map(lambda o: rounded_floats(o, ndigits), obj)
+    return obj
+