python: Print path of the Python module used during tests.

* lang/python/tests/initial.py: Print path of the Python module used
during tests.  Useful to detect if by any mistake the wrong module is
picked up.

Signed-off-by: Justus Winter <justus@g10code.com>

lang/python/tests/initial.py

@@ -24,6 +24,9 @@ import os
 import subprocess
 import gpg
 import support
+
+print("Using gpg module from {0!r}.".format(os.path.dirname(gpg.__file__)))
+
 support.init_gpgme(gpg.constants.protocol.OpenPGP)
 
 subprocess.check_call([os.path.join(os.getenv('top_srcdir'),