What are the kinds of software that are not advisable to be developed using Python?

[CM]

On Saturday, February 8, 2014 10:43:47 PM UTC-5, Steven D'Aprano wrote:

> PyPy can generate code which is comparable to compiled C in speed.  
> Perhaps you mean, "if execution speed is the most important thing, using 
> a naive Python interpreter may not be fast enough".

Given that the OP seems to be new enough to Python to not know what it is
not as good for, my guess is that PyPy may not yet be "ready enough" to
serve some/most of his needs. For example, if he wanted to write a GUI
app, AFAIK he is, for now, limited to Tkinter and a constrained section of
wxPython, and wxPython is dicey.  I tend to see things through a desktop GUI 
application lens, so maybe this is just my bias.  And I hope I am wrong. I 
am in no way trying to slight the PyPy efforts.

Maybe he could somehow write the GUI part with CPython and the speed-critical
parts with PyPy but I don't know if that is possible.  (Is it?)