where are the program that are written in python?

[Patrick Maupin]

On May 22, 2:43 am, sturlamolden <stu... at molden.no> wrote:
> On 21 Mai, 20:20, Patrick Maupin <pmau... at gmail.com> wrote:

> > Also, any company in a competitive
> > market where execution speed is extremely important might choose some
> > other language because, frankly, the fact that a development tool is
> > highly productive is not something that the end user directly cares
> > about.  
>
> That only applies to CPU bound program code (most program code is I/O
> bound), and only to computational bottlenecks (usually less than 5% of
> the code) in the CPU bound programs. Today, most programs are I/O
> bound: You don't get a faster network connection or harddrive by using
> C. In this case, performance depends on other factors than choice of
> language. That is why Mercurial (written in Python) can be much faster
> than SVN (written in C).
>
> For computational bottlenecks we might want to try high-performance
> numerical libraries first. If that does not help, we can try to
> replace some Python with C. Python as "glue" does not mean Python is
> inferior to C. It just means it is a PITA to write C or Fortran all
> the time. I value my own time a lot more than a few extra CPU cycles.
> Who cares about speed where it is not needed?

I think we're in violent agreement here -- you neglected to quote the
part where I said "(But the up-front choice of another language simply
for speed, rather than prototyping with Python and then recoding the
slow bits, would probably be a decision borne of ignorance.)"

Regards,
Pat