Fix for unicode in inputsplitter.

IPython/core/inputsplitter.py

@@ -603,7 +603,9 b' class InputSplitter(object):'
 
         If input lines are not newline-terminated, a newline is automatically
         appended."""
-
+        if not isinstance(lines, unicode):
+            lines = lines.decode(self.encoding)
+        
         if buffer is None:
             buffer = self._buffer