Problem with list.insert

[SUBHABRATA]

Dear group,
Thanx for your idea to use dictionary instead of a list. Your code is
more or less, OK, some problems are there, I'll debug them. Well, I
feel the insert problem is coming because of the Hindi thing.
And Python2.5 is supporting Hindi quite fluently.
I am writing in Python2.5.1.
Best Regards,
Subhabrata.

Terry Reedy wrote:
> SUBHABRATA, I recommend you study this excellent response carefully.
>
> castironpi wrote:
> > On Aug 28, 11:13 am, SUBHABRATA <subhabrata.i... at hotmail.com> wrote:
> >-.
> >
> > Instead split up your inputs first thing.
> >
> > trans= { 'a': 'A', 'at': 'AT', 'to': 'TO' }
> > sample= 'a boy at the park walked to the tree'
> > expected= 'A boy AT the park walked TO the tree'
>
> It starts with a concrete test case -- an 'executable problem
> statement'.  To me, this is cleared and more useful than the 20 lines of
> prose you used.  A single line English statement would be "Problem:
> Replace selected words in a text using a dictionary."  Sometimes, less
> (words) really is more (understanding).
>
> If the above is *not* what you meant, then give a similarly concrete
> example that does what you *do* mean.
>
> > sample_list= sample.split( )
> > for i, x in enumerate( sample_list ):
> > 	if x in trans:
> > 		sample_list[ i ]= trans[ x ]
>
> Meaningful names make the code easy to understand.  Meaningless numbered
> 'a's require each reader to create meaningful names and associate them
> in his/her head.  But that is part of the job of the programmer.
>
> > result= ' '.join( sample_list )
> > print result
> > assert result== expected
>
> It ends with an automated test that is easy to rerun should the code in
> between need to be modified.  Assert only prints something if there is
> an error.  With numerous tests, that is what one often wants.  But with
> only one, your might prefer 'print' instead of 'assert' to get a more
> reassuring and satisfying 'True' printed.
>
> > Then replace them as you visit each one, and join them later.
>
> If you are using Hindi characters, you might want to use Python3 when it
> arrives, since it will use Unicode strings as the (default) string type.
>   But for posting here, stick with the ascii subset.
>
> Terry Jan Reedy