Enforce keyword order.

1 files changed, 2 insertions, 0 deletions

diff --git a/interpreter.py b/interpreter.py
index 7e5a36c..09c7ae0 100755
--- a/interpreter.py
+++ b/interpreter.py
@@ -616,6 +616,8 @@ class Interpreter():
 
     def reduce_arguments(self, args):
         assert(isinstance(args, nodes.Arguments))
+        if args.incorrect_order():
+            raise InvalidArguments('Line %d: all keyword arguments must be after positional arguments.' % args.lineno())
         reduced_pos = [self.reduce_single(arg) for arg in args.arguments]
         reduced_kw = {}
         for key in args.kwargs.keys():