docs and examples: python bindings

* Woumd up the "what's new" section.
* Added an example for sending a key to the keyservers via hkp4py.
* Updated the export key code to use a more complete check for the
  $GNUPGHOME location.
* Expanded on the installation and reinstallation troubleshooting
  section.

Tested-by: Ben McGinnes <[email protected]>
Signed-off-by: Ben McGinnes <[email protected]>

1 files changed, 18 insertions, 4 deletions

diff --git a/lang/python/examples/howto/export-key.py b/lang/python/examples/howto/export-key.py
index 80768fe7..c17f2471 100755
--- a/lang/python/examples/howto/export-key.py
+++ b/lang/python/examples/howto/export-key.py
@@ -51,12 +51,26 @@ else:
     logrus = input("Enter the UID matching the key(s) to export: ")
     homedir = input("Enter the GPG configuration directory path (optional): ")
 
-if homedir.startswith("~"):
-    if os.path.exists(os.path.expanduser(homedir)) is True:
-        c.home_dir = os.path.expanduser(homedir)
+if len(homedir) == 0:
+    homedir = None
+elif homedir.startswith("~"):
+    userdir = os.path.expanduser(homedir)
+    if os.path.exists(userdir) is True:
+        homedir = os.path.realpath(userdir)
+    else:
+        homedir = None
+else:
+    homedir = os.path.realpath(homedir)
+
+if os.path.exists(homedir) is False:
+    homedir = None
+else:
+    if os.path.isdir(homedir) is False:
+        homedir = None
     else:
         pass
-elif os.path.exists(homedir) is True:
+
+if homedir is not None:
     c.home_dir = homedir
 else:
     pass