python: Make 'get_key' more idiomatic.

* lang/python/pyme/core.py (Context.get_key): Raise errors.KeyNotFound
if the key is not found.  This error is both a KeyError for idiomatic
error handling as well as a GPGMEError so we don't break existing
code.
* lang/python/pyme/errors.py (KeyNotFound): New class.
* lang/python/tests/support.py (no_such_key): New variable.
* lang/python/tests/t-keylist.py: Test the new behavior.

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

1 files changed, 9 insertions, 1 deletions

diff --git a/lang/python/pyme/core.py b/lang/python/pyme/core.py
index cd5217f3..f0eab436 100644
--- a/lang/python/pyme/core.py
+++ b/lang/python/pyme/core.py
@@ -680,11 +680,19 @@ class Context(GpgmeWrapper):
                         -- the matching key
 
         Raises:
+        KeyError	-- if the key was not found
         GPGMEError	-- as signaled by the underlying library
 
         """
         ptr = gpgme.new_gpgme_key_t_p()
-        errorcheck(gpgme.gpgme_get_key(self.wrapped, fpr, ptr, secret))
+
+        try:
+            errorcheck(gpgme.gpgme_get_key(self.wrapped, fpr, ptr, secret))
+        except errors.GPGMEError as e:
+            if e.getcode() == errors.EOF:
+                raise errors.KeyNotFound(fpr)
+            raise e
+
         key = gpgme.gpgme_key_t_p_value(ptr)
         gpgme.delete_gpgme_key_t_p(ptr)
         assert key