docs: python bindings

* Updated the Cython example code slightly, along with the
  corresponding explanation.

2 files changed, 14 insertions, 4 deletions

diff --git a/lang/python/examples/howto/advanced/cython/keycount.pyx b/lang/python/examples/howto/advanced/cython/keycount.pyx
index f0097db2..2aa636d5 100755
--- a/lang/python/examples/howto/advanced/cython/keycount.pyx
+++ b/lang/python/examples/howto/advanced/cython/keycount.pyx
@@ -1,3 +1,6 @@
+from __future__ import absolute_import
+
+import cython
 import gpg
 
 c = gpg.Context()
@@ -10,7 +13,14 @@ secnum = len(seclist)
 publist = list(pubkeys)
 pubnum = len(publist)
 
+if cython.compiled is True:
+    cc = "Powered by Cython compiled C code."
+else:
+    cc = "Powered by Python."
+
 print("""
-Number of secret keys:  {0}
-Number of public keys:  {1}
-""".format(secnum, pubnum))
+    Number of secret keys:  {0}
+    Number of public keys:  {1}
+
+  {2}
+""".format(secnum, pubnum, cc))
diff --git a/lang/python/examples/howto/advanced/cython/setup.py b/lang/python/examples/howto/advanced/cython/setup.py
index 0d0be01e..f8dce034 100644
--- a/lang/python/examples/howto/advanced/cython/setup.py
+++ b/lang/python/examples/howto/advanced/cython/setup.py
@@ -2,5 +2,5 @@ from distutils.core import setup
 from Cython.Build import cythonize
 
 setup(
-    ext_modules = cythonize("keycount.pyx")
+    ext_modules = cythonize("keycount.pyx", annotate=True)
 )