Partial py3k-ification of Doc/library/: convert has_key references into either 'k in d' or __contains__; normalize raise statements; convert print statements into print function calls.
diff --git a/Doc/library/wsgiref.rst b/Doc/library/wsgiref.rst
index b3a3a9f..cf1fc97 100644
--- a/Doc/library/wsgiref.rst
+++ b/Doc/library/wsgiref.rst
@@ -244,7 +244,7 @@
       from wsgiref.simple_server import make_server, demo_app
 
       httpd = make_server('', 8000, demo_app)
-      print "Serving HTTP on port 8000..."
+      print("Serving HTTP on port 8000...")
 
       # Respond to requests until process is killed
       httpd.serve_forever()