* python
#+begin_src python :results none :session "ses1" :exports code :comments org
  a=1
  blabla(x)
  b=1
  c=2
  d=3
  e=3
  def blabla(x):
      return x
#+end_src

* R
  #+begin_src R :file toto.png :results graphics file :session :exports both :comments org
  plot(1, blabla(1))
  blabla(2)
  #+end_src

  #+begin_src R :results none :session :exports code :comments org
  blabla(x)
  blabla <- function(x) {
  x*x
  }
  #+end_src
