** persistent python
   :PROPERTIES:
   :DATE:     2009-11-20
   :END:
#+begin_src python :session :results silent
  import types
#+end_src

#+begin_src python :session
  types.FunctionType
#+end_src

#+resname:
: function

*** more persistent python
    :PROPERTIES:
    :session:  default
    :DATE:     2009-11-20
    :END:

#+begin_src python :results silent
  import types
#+end_src

#+begin_src python
  types.FunctionType
#+end_src

#+resname:
: function