OT: Code Examples

I'm interested in developing Python-based programs, including an 
engineering app. ... re-writing from Fortran and C versions.  One of the 
objectives would to be make reasonable use of the available structure 
(objects, etc.).  So, I'd like to read a couple of good, simple 
scientific-oriented programs that do that kind of thing.

Looking for links, etc.

Fred

On Feb 28, 6:03&#4294967295;pm, Fred Marshall <fmarshallxremove_th...@acm.org>
wrote:
> I'm interested in developing Python-based programs, including an
> engineering app. ... re-writing from Fortran and C versions. &#4294967295;One of the
> objectives would to be make reasonable use of the available structure
> (objects, etc.). &#4294967295;So, I'd like to read a couple of good, simple
> scientific-oriented programs that do that kind of thing.
>
> Looking for links, etc.
>
> Fred

The best place for you to start: http://numpy.scipy.org/

Numpy manual: http://www.tramy.us/numpybook.pdf

On 2/28/2011 8:14 AM, n00m wrote:
> On Feb 28, 6:03 pm, Fred Marshall<fmarshallxremove_th...@acm.org>
> wrote:

> The best place for you to start: http://numpy.scipy.org/
>
> Numpy manual: http://www.tramy.us/numpybook.pdf

OK Thanks!

Fred

Fred Marshall wrote:

> I'm interested in developing Python-based programs, including an 
> engineering app. ... re-writing from Fortran and C versions.  One of the 
> objectives would to be make reasonable use of the available structure 
> (objects, etc.).  So, I'd like to read a couple of good, simple 
> scientific-oriented programs that do that kind of thing.

Why Python? I really can't understand the rush of every man and
his dog to Python.

Its not that I'm a stick in the mud stuck with C and C++, rather
that I used Python for a number of years from 1998 to 2004 and
rejected it in favour of strict statically typed functional
langauges like Ocaml and Haskell.

Erik
-- 
----------------------------------------------------------------------
Erik de Castro Lopo
http://www.mega-nerd.com/

On 01/03/2011 08:43, Erik de Castro Lopo wrote:
> Fred Marshall wrote:
>
>> I'm interested in developing Python-based programs, including an
>> engineering app. ... re-writing from Fortran and C versions.  One of the
>> objectives would to be make reasonable use of the available structure
>> (objects, etc.).  So, I'd like to read a couple of good, simple
>> scientific-oriented programs that do that kind of thing.
>
> Why Python? I really can't understand the rush of every man and
> his dog to Python.
>
> Its not that I'm a stick in the mud stuck with C and C++, rather
> that I used Python for a number of years from 1998 to 2004 and
> rejected it in favour of strict statically typed functional
> langauges like Ocaml and Haskell.
>

My understanding is/was that Guido originally proposed Python as the 
replacement for BASIC; i.e. to be the new first language students at 
school would be exposed to. So rather than compare it to C and C++, I 
suppose one should, strategically speaking, compare it to Visual Basic 
and/or Java.

The other aspect is purely pragmatic - it has bindings for tk, MIDI and 
audio (and of course Csound as you know), which adds up to a fairly 
hefty scripting package complete with GUI design options - great for 
"knocking up stuff quickly". But - I am ~still~ caught out by the 
semantic significance of indenting. Looks OK enough on paper, but doing 
it interactively is another matter.


Richard Dobson

Erik de Castro Lopo <erikd@mega-nerd.com> writes:
> Why Python? I really can't understand the rush of every man and
> his dog to Python.

Are you trolling?  Anyway, try googling "evil mangler" and ask why it
wasn't done in Haskell.  Same idea.

On Mar 1, 3:03&#4294967295;am, Fred Marshall <fmarshallxremove_th...@acm.org>
wrote:
> I'm interested in developing Python-based programs, including an
> engineering app. ... re-writing from Fortran and C versions. &#4294967295;One of the
> objectives would to be make reasonable use of the available structure
> (objects, etc.). &#4294967295;So, I'd like to read a couple of good, simple
> scientific-oriented programs that do that kind of thing.
>
> Looking for links, etc.
>
> Fred

you could try searching here http://pypi.python.org/pypi. I had a look
for models, but didn't find anything in particular. But would be
really useful if anyone does know of some good examples

Paul Rubin wrote:

> Erik de Castro Lopo <erikd@mega-nerd.com> writes:
> > Why Python? I really can't understand the rush of every man and
> > his dog to Python.
> 
> Are you trolling?

Definitely not. As I said I used Python for a number of years
and ditched it in favour of Ocaml and Haskell.

The ease of development and high level language features of
Python look really good if all you know is C, C++ and Java.
The big difference Python and those three languages is that
there are a huge number of classes of bugs which are run time
errors in Python but compile time errors in C/C++/Java.

I will always chose compile time errors over run time errors.

> Anyway, try googling "evil mangler"

I know what the "evil mangler" is. It was called that because it
threw away all the principles of good software design in favour
of expediency. GHC now has a new LLVM backend which does not
depend on the evil mangler and I strongly suspect that the backend
which uses the evil mangler will be dumped in the next year or
two.

> and ask why it wasn't done in Haskell.  Same idea.

Expediency over common sense?

Erik
-- 
----------------------------------------------------------------------
Erik de Castro Lopo
http://www.mega-nerd.com/

Paul Rubin wrote:

> Erik de Castro Lopo <erikd@mega-nerd.com> writes:
> > Why Python? I really can't understand the rush of every man and
> > his dog to Python.
> 
> Are you trolling?

All my responses to this thread are really mean for comp.dsp,
not for comp.lang.python.

Erik
-- 
----------------------------------------------------------------------
Erik de Castro Lopo
http://www.mega-nerd.com/

Am Mon, 28 Feb 2011 08:03:01 -0800 schrieb Fred Marshall:

> I'm interested in developing Python-based programs, including an
> engineering app. ... re-writing from Fortran and C versions.  One of the
> objectives would to be make reasonable use of the available structure
> (objects, etc.).  So, I'd like to read a couple of good, simple
> scientific-oriented programs that do that kind of thing.
> 
> Looking for links, etc.
> 
> Fred

An execellent book in this domain is
"Python Scripting for Computational Science"
by Hans Petter Langtangen

Springer, ISBN 3-450-43508-5

HTH.
Martin