python: Clean up and modernize examples.

* lang/python/examples/Examples.rst: Delete file.
* lang/python/examples/t-edit.py: Likewise.  This is actually a test
case and has been moved to 'tests'.
* lang/python/examples/assuan.py: New file.
* lang/python/examples/decryption-filter.py: Likewise.
* lang/python/examples/delkey.py: Modernize.
* lang/python/examples/encrypt-to-all.py: Likewise.
* lang/python/examples/exportimport.py: Likewise.
* lang/python/examples/genkey.py: Likewise.
* lang/python/examples/inter-edit.py: Likewise.
* lang/python/examples/sign.py: Likewise.
* lang/python/examples/signverify.py: Likewise.
* lang/python/examples/simple.py: Likewise.
* lang/python/examples/testCMSgetkey.py: Likewise.
* lang/python/examples/verifydetails.py: Likewise.

Signed-off-by: Justus Winter <[email protected]>

1 files changed, 20 insertions, 25 deletions

diff --git a/lang/python/examples/delkey.py b/lang/python/examples/delkey.py
index 3fb71eb4..e607f219 100755
--- a/lang/python/examples/delkey.py
+++ b/lang/python/examples/delkey.py
@@ -1,35 +1,30 @@
 #!/usr/bin/env python3
+#
+# Copyright (C) 2016 g10 Code GmbH
 # 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 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.
+# 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
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
 
 # Sample of key deletion
-# It deletes keys for [email protected] generated by genkey.pl script
-
-from pyme import core
+# It deletes keys for [email protected] generated by genkey.py script
 
-core.check_version(None)
+import pyme
 
-# Note that we need to collect all keys out of the iterator return by
-# c.op_keylist_all() method before starting to delete them. If you
-# delete a key in the middle of iteration c.op_keylist_next() will
-# raise INV_VALUE exception
+with pyme.Context() as c:
+    # Note: We must not modify the key store during iteration,
+    # therefore, we explicitly make a list.
+    keys = list(c.keylist("[email protected]"))
 
-c = core.Context()
-# 0 in keylist means to list not only public but secret keys as well.
-for thekey in [x for x in c.op_keylist_all("[email protected]", 0)]:
-    # 1 in delete means to delete not only public but secret keys as well.
-    c.op_delete(thekey, 1)
+    for k in keys:
+        c.op_delete(k, True)