--- a/python.rst	Sun Sep 09 00:28:56 2012 +0300
+++ b/python.rst	Sat Sep 15 20:05:49 2012 +0300
@@ -50,6 +50,10 @@
 
 Generate documentation from Python sources by Sphinx.
 -----------------------------------------------------
+::
+
+  $ sudo apt-get install python-sphinx
+  $ sudo apt-get install rst2pdf
 
 Code analyzers and style checkers.
 ==================================