patch 7.4.1129
Problem:    Python None value can't be converted to a Vim value.
Solution:   Just use zero. (Damien)
diff --git a/src/testdir/test86.ok b/src/testdir/test86.ok
index 5cb0ac5..d103909 100644
--- a/src/testdir/test86.ok
+++ b/src/testdir/test86.ok
@@ -86,6 +86,7 @@
 ['a', 'b']
 ['c', 1]
 ['d', ['e']]
+pyeval("None") = 0
 0.0
 "\0":	Vim(let):E859:
 {"\0": 1}:	Vim(let):E859: