Get rid of a bunch more raw_input references
diff --git a/Demo/pdist/cmptree.py b/Demo/pdist/cmptree.py
index f6c611f..fa06f5f 100755
--- a/Demo/pdist/cmptree.py
+++ b/Demo/pdist/cmptree.py
@@ -6,6 +6,11 @@
 import time
 import os
 
+def raw_input(prompt):
+    sys.stdout.write(prompt)
+    sys.stdout.flush()
+    return sys.stdin.readline()
+
 def main():
     pwd = os.getcwd()
     s = raw_input("chdir [%s] " % pwd)