Thank you. 
I wonder if it is worth including this usage in the manual?


---------------------------------------
Hi Thierry,

abonnements <abonnements@thierry-pelle.eu> writes:

Hi,
    I would like to know if it is possible to desactivate a previously 
"open session".
Example :
* Test
:PROPERTIES:
:HEAGER-ARGS: :session SESS-TEST
:END:

<....> some code in session mode

#+begin_src python
<...> some code for which I dont what to use the session.
#+end_src

Is there something like ":session NONE" or ":session DISABLE"?

There is:  ":session none"

Best,
Andreas