Added printing requirements

zope/schema/_messageid.py

@@ -0,0 +1,20 @@
+##############################################################################
+#
+# Copyright (c) 2000 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+
+try:
+    from zope.i18nmessageid import MessageFactory
+except ImportError:  # pragma: no cover
+    from zope.schema._compat import text_type as _
+else:  # pragma: no cover
+    _ = MessageFactory("zope")