Hi all, I found a solution to fix the echo problem of the emacs python shell: http://stackoverflow.com/questions/8060609/python-interpreter-in-emacs-repeats-lines That is, in the Interior Python buffer, do M-: (setq comint-process-echoes t) ;; or nil Now, if I enter command directly in the interior python buffer, the command is not echoed and this is what I want. However, When I evaluate the python src code block in org-mode(by `C-c C-c`), the problem persists. I notice every time I evaluate the block, I see 'org_babel_python_eoe' in the interior python buffer. I stumbled on a very strange emacs behavior. When I fiddled around, at some point, I produced the correct answer as the manual. I thought I got the right setup, but when I saved everything and restarted emacs, problem persists. Will it be a sign of anything wrong? What's even stranger is that: the evaluation for the first time gives different results from the evaluation for the second time, on exactly the same src_block: This is what I got when I evaluation the code block for the first time: ------------------------------------- #+BEGIN_SRC python :results output :session foo x=100 print "hello" 2 print "bye" #+END_SRC #+RESULTS: #+begin_example x=100 >>> print "hello" >>> hello 2 2 print "bye" bye #+end_example ----------------------------------------------- ------------------------------------------------------- The following is what I got when I evaluate the same block again: #+BEGIN_SRC python :results output :session foo x=100 print "hello" 2 print "bye" #+END_SRC #+RESULTS: : x=100 : print "hello" : hello : 2 : 2 : print "bye" : bye : : Notice that the prompt symbol ">>>" is in the result for the first evaluation but not in the second evaluation. Also the result is not embedded in the #+being_example/#+end_example for the second evaluation. I want to hunt down the problem. Any hints/helps is greatly appreciated. Shiyuan On Mon, Jun 16, 2014 at 9:12 AM, Doyley, Marvin wrote: > Hi Eric, > > Thanks for showing me the smart way of doing this. > > cheers, > M > -- > > > >