I'm coming from Tcl-world ...

Andreas Leitgeb Andreas.Leitgeb at siemens.at
Mon Aug 5 14:43:24 CEST 2002


Hans Nowak <wurmy at earthlink.net> wrote:
> Andreas Leitgeb wrote:

> That is understandable, coming from another language and being used to 
> different idioms.  
Whenever I start to peek into a new language, I try to recognize
some  abstract elements in it. 
 one of these "abstract elements" is described as such:
   'A loop, whose body can directly and freely modify the 
      loop-var, thereby controlling the loop'
   (one might for example want to step back one iteration eventually, 
    which seems unachievable with iterator-based loops)
   ('freely' means more than continue&break)
 In C/C++/Java/perl/Tcl there is the for-loop that fulfills it.
 Python lacks it.
 Of course, one might question the usefulness of this feature,
  but that's not in the scope of my original question.
 Whether I really need it and whether and with what magic tricks I can
  do without it, practise will show.

> Why not: [ replace continue with an if and make everything after
>    the continue  part of the if-block]
I wrote: the location of continue may be nested arbitrarily deep down
  inside other if's.

> I don't know which book you used to learn Python, but it seems it taught you
> the right things and common "Pythonic" idioms.  
It is the german translation of: 
  "Python Pocket Reference (2nd edition)"  ("Python kurz&gut")

> you may find yourself using the other constructs anyway, because they "feel 
> better".  Just give them a try.
Yes, of course.
My intended question was not, how to program C/Tcl in python, but what 
are Python's idioms for the mentioned "tasks".
The reason, this thread grew so fast, was that obviously I didn't
specify these "tasks" well enough.

-- 
Newsflash: Sproingy made it to the ground !
  read more ... <http://avl.enemy.org/sproingy/>



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