Run 2to3 over the Demo/ directory to shut up parse errors from 2to3 about lingering print statements.
diff --git a/Demo/pdist/mac.py b/Demo/pdist/mac.py
index 61cff09..beb77ec 100755
--- a/Demo/pdist/mac.py
+++ b/Demo/pdist/mac.py
@@ -9,7 +9,7 @@
 def main():
     while 1:
         try:
-            line = raw_input('$ ')
+            line = input('$ ')
         except EOFError:
             break
         words = line.split()