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diff --git a/lang/py3-pyme/examples/signverify.py b/lang/py3-pyme/examples/signverify.py
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+#!/usr/bin/env python3
+# $Id$
+# Copyright (C) 2004,2008 Igor Belyi <[email protected]>
+#
+#    This program is free software; you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation; either version 2 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program; if not, write to the Free Software
+#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+# Sample of unattended signing/verifying of a message.
+# It uses keys for [email protected] generated by genkey.pl script
+
+import sys
+from pyme import core, callbacks
+from pyme.constants.sig import mode
+
+core.check_version(None)
+
+plain = core.Data("Test message")
+sig = core.Data()
+c = core.Context()
+user = "[email protected]"
+
+c.signers_clear()
+# Add [email protected]'s keys in the list of signers
+for sigkey in c.op_keylist_all(user, 1):
+    if sigkey.can_sign:
+        c.signers_add(sigkey)
+if not c.signers_enum(0):
+    print("No secret %s's keys suitable for signing!" % user)
+    sys.exit(0)
+
+# This is a map between signer e-mail and its password
+passlist = {
+    "<[email protected]>": "abcdabcdfs"
+    }
+    
+# callback will return password based on the e-mail listed in the hint.
+c.set_passphrase_cb(lambda x,y,z: passlist[x[x.rindex("<"):]])
+
+c.op_sign(plain, sig, mode.CLEAR)
+
+# Print out the signature (don't forget to rewind since signing put sig at EOF)
+sig.seek(0,0)
+signedtext = sig.read()
+print(signedtext)
+
+# Create Data with signed text.
+sig2 = core.Data(signedtext)
+plain2 = core.Data()
+
+# Verify.
+c.op_verify(sig2, None, plain2)
+result = c.op_verify_result()
+
+# List results for all signatures. Status equal 0 means "Ok".
+index = 0
+for sign in result.signatures:
+    index += 1
+    print("signature", index, ":")
+    print("  summary:    ", sign.summary)
+    print("  status:     ", sign.status)
+    print("  timestamp:  ", sign.timestamp)
+    print("  fingerprint:", sign.fpr)
+    print("  uid:        ", c.get_key(sign.fpr, 0).uids[0].uid)
+
+# Print "unsigned" text. Rewind since verify put plain2 at EOF.
+plain2.seek(0,0)
+print("\n", plain2.read())