Emacs Org Mode: Executing simple python code -

how can execute simple python-code in emacs' org mode?

the first example works fine, can't make give me result of simplest computations:

; works #+begin_src python def foo(x):   if x>0:     return x+10    else:     return x-1  return foo(50) #+end_src  #+results: : 60  ; not work #+begin_src python 1+1 #+end_src  #+results: : none  ; not work #+begin_src python print(1+1) #+end_src  #+results: : none 

i set org mode using following lines:

;; enable python in-buffer evaluation (org-babel-do-load-languages  'org-babel-load-languages  '((python . t)))  ;; python code safe (defun my-org-confirm-babel-evaluate (lang body) (not (string= lang "python"))) (setq org-confirm-babel-evaluate 'my-org-confirm-babel-evaluate) 

there two ways of getting result of source block - output , value. mixed them up, hence troubles.

first block fine.

to fix second block:

#+begin_src python :results value return 1+1 #+end_src 

to fix third block:

#+begin_src python :results output print 1+1 #+end_src 

when output mode value must return. putting there did 1+1 won't do. in third 1 want result printed output, default session setting value(mine defaults output btw).

and bit org-confirm-babel-evaluate kind of irrelevant question. have set nil.