lisper learning python, ... could you please comment my first python program?

Michele Simionato michele.simionato at
Sun Aug 26 19:40:28 CEST 2007

On Aug 26, 5:56 pm, neptundan... at wrote:
> Hi,
>   to extend my skills, I am learning python. I have written small
> program which computes math expression like "1+2*sin(y^10)/cos(x*y)"
> and similar, so far only + - * / ^ sin con tan sqrt are supported. But
> my program is quite inextensible, I have to change the code to add new
> functions... Could some fellow experienced pythonista give me some
> tips how to make my program shorter, and more extensible?

I understand that you are doing this as a learning exercise. Still, I
recommend you to have a look at the shlex module in the standard
and to pyparsing. Looking at their source code should should give you
idea. BTW, since you are familiar with Lisp, I would recommend you
for a better interactive experience.

  Michele Simionato

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