Syntax fixes for examples in the Doc/includes
diff --git a/Doc/includes/email-headers.py b/Doc/includes/email-headers.py
index 664c3ff..a53317d 100644
--- a/Doc/includes/email-headers.py
+++ b/Doc/includes/email-headers.py
@@ -12,6 +12,6 @@
         'Body would go here\n')
 
 #  Now the header items can be accessed as a dictionary:
-print 'To: %s' % headers['to']
-print 'From: %s' % headers['from']
-print 'Subject: %s' % headers['subject']
+print('To: %s' % headers['to'])
+print('From: %s' % headers['from'])
+print('Subject: %s' % headers['subject'])