Task

Rename:

   a file called     input.txt     into     output.txt     and 
   a directory called     docs     into     mydocs.


This should be done twice:  
once "here", i.e. in the current working directory and once in the filesystem root.

It can be assumed that the user has the rights to do so.

(In unix-type systems, only the user root would have
sufficient permissions in the filesystem root.)




  $ "
import os
if os.path.exists('input.txt'):
    os.rename('input.txt', 'output.txt')
" python
 
  $ "
import os
if os.path.exists('docs'):
    os.rename('docs', 'mydocs')
" python
 
  $ "
import os
if os.path.exists('/input.txt'):
    os.rename('/input.txt', '/output.txt')
" python
 
  $ "
import os
if os.path.exists('/docs'):
    os.rename('/docs', '/mydocs')
" python