#2503 make singletons compared with "is" not == or !=
Thanks to Wummel for the patch
diff --git a/Demo/curses/ncurses.py b/Demo/curses/ncurses.py
index c9394d0..8af3b42 100644
--- a/Demo/curses/ncurses.py
+++ b/Demo/curses/ncurses.py
@@ -9,7 +9,7 @@
 from curses import panel
 
 def wGetchar(win = None):
-    if win == None: win = stdscr
+    if win is None: win = stdscr
     return win.getch()
 
 def Getchar():