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Re: Basic Python Questions - Oct. 31, 2013

Subject Re: Basic Python Questions - Oct. 31, 2013
From William Ray Wing <wrw@mac.com>
Date 2013-11-01 11:42 -0400
References <UdGdnaDGa6n9vu_PnZ2dnUVZ_umdnZ2d@earthlink.com>
Newsgroups comp.lang.python
Message-ID <mailman.1934.1383320554.18130.python-list@python.org> (permalink)

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On Oct 31, 2013, at 5:31 AM, "E.D.G." <edgrsprj@ix.netcom.com> wrote:

> Posted by E.D.G. on October 31, 2013
> 
>      The following are several relatively basic questions regarding Python's capabilities.  I am not presently using it myself.  At the moment a number of people including myself are comparing it with other programs such as XBasic for possible use.
> 
> 1.  How fast can Python do math calculations compared with other languages such as Fortran and fast versions of Basic.  I would have to believe that it is much faster than Perl for doing math calculations.
> 

[byte]

> 4.  How well does Python work for interactive programming.  For example, if a Python program is running on a PC and is drawing a chart, can that chart be modified by simply pressing a key while the Python program is running.  I have Perl and Gnuplot program combinations that can do that.  Their interactive speed is not that great.  But it is adequate for my own uses.
> 

I thought about responding to this yesterday, decided others could do so better than I, but then decided to point out a bit of demo code that was one of the first really startling pieces of Python that I stumbled into.

If you look here:   http://wiki.wxpython.org/MatplotlibFourierDemo

You will find a fairly short, well documented demo code that interactively computes a Fast Fourier transform from the frequency domain to the time domain.  As you move the two sliders below the graphs, the input aptitude and location of the frequency peaks are changed and the resulting wavelet is plotted, all in real time.

Computing a Fourier transform is numerically pretty intensive, doing so in real time with no perceptible delay (at least on a reasonably modern system) should convince any skeptic of Python's ability to do BOTH number crunching AND interactive display.

Granted, this performance is based on pulling in libraries.  It imports numpy, mathplotlib, and wx to handle the fast array calculations, the plotting, and the GUI respectively, but those are exactly the sorts of "batteries included" libraries that give Python so much power and flexibility.

-Bill

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Basic Python Questions - Oct. 31, 2013 "E.D.G." <edgrsprj@ix.netcom.com> - 2013-10-31 04:31 -0500
  Re: Basic Python Questions - Oct. 31, 2013 Chris “Kwpolska” Warrick <kwpolska@gmail.com> - 2013-10-31 11:03 +0100
    Re: Basic Python Questions - Oct. 31, 2013 "E.D.G." <edgrsprj@ix.netcom.com> - 2013-10-31 05:38 -0500
      Re: Basic Python Questions - Oct. 31, 2013 Chris “Kwpolska” Warrick <kwpolska@gmail.com> - 2013-10-31 12:30 +0100
      Re: Basic Python Questions - Oct. 31, 2013 Alain Ketterlin <alain@dpt-info.u-strasbg.fr> - 2013-10-31 14:17 +0100
        Re: Basic Python Questions - Oct. 31, 2013 Chris Angelico <rosuav@gmail.com> - 2013-11-01 01:05 +1100
          Re: Basic Python Questions - Oct. 31, 2013 Alain Ketterlin <alain@dpt-info.u-strasbg.fr> - 2013-10-31 15:18 +0100
            Re: Basic Python Questions - Oct. 31, 2013 Chris Angelico <rosuav@gmail.com> - 2013-11-01 01:45 +1100
        Re: Basic Python Questions - Oct. 31, 2013 Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-10-31 14:15 +0000
          Re: Basic Python Questions - Oct. 31, 2013 Alain Ketterlin <alain@dpt-info.u-strasbg.fr> - 2013-10-31 15:31 +0100
        Re: Basic Python Questions - Oct. 31, 2013 Robert Kern <robert.kern@gmail.com> - 2013-10-31 14:41 +0000
        Re: Basic Python Questions - Oct. 31, 2013 Chris Angelico <rosuav@gmail.com> - 2013-11-01 01:49 +1100
        Re: Basic Python Questions - Oct. 31, 2013 Robert Kern <robert.kern@gmail.com> - 2013-10-31 15:11 +0000
      Re: Basic Python Questions - Oct. 31, 2013 Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-10-31 13:48 +0000
        Re: Basic Python Questions - Oct. 31, 2013 "E.D.G." <edgrsprj@ix.netcom.com> - 2013-11-03 01:17 -0500
          Re: Basic Python Questions - Oct. 31, 2013 "E.D.G." <edgrsprj@ix.netcom.com> - 2013-11-12 04:21 -0600
            Re: Basic Python Questions - Oct. 31, 2013 Chris Angelico <rosuav@gmail.com> - 2013-11-13 10:05 +1100
      Re: Basic Python Questions - Oct. 31, 2013 rusi <rustompmody@gmail.com> - 2013-10-31 08:48 -0700
        Re: Basic Python Questions - Oct. 31, 2013 "E.D.G." <edgrsprj@ix.netcom.com> - 2013-11-03 00:45 -0500
          Re: Basic Python Questions - Oct. 31, 2013 rusi <rustompmody@gmail.com> - 2013-11-02 23:54 -0700
  Re: Basic Python Questions - Oct. 31, 2013 Roy Smith <roy@panix.com> - 2013-10-31 09:20 -0400
  Re: Basic Python Questions - Oct. 31, 2013 Skip Montanaro <skip@pobox.com> - 2013-10-31 11:14 -0500
  Re: Basic Python Questions - Oct. 31, 2013 William Ray Wing <wrw@mac.com> - 2013-11-01 11:42 -0400
    Re: Basic Python Questions - Oct. 31, 2013 "E.D.G." <edgrsprj@ix.netcom.com> - 2013-11-03 01:28 -0500
  Re: Basic Python Questions - Oct. 31, 2013 Ethan Furman <ethan@stoneleaf.us> - 2013-11-01 11:08 -0700
  Re: Basic Python Questions - Oct. 31, 2013 William Ray Wing <wrw@mac.com> - 2013-11-01 15:17 -0400
  Re: Basic Python Questions - Oct. 31, 2013 "E.D.G." <edgrsprj@ix.netcom.com> - 2013-11-03 01:02 -0500
    Re: Basic Python Questions - Oct. 31, 2013 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-03 07:43 +0000
      Re: Basic Python Questions - Oct. 31, 2013 "E.D.G." <edgrsprj@ix.netcom.com> - 2013-11-03 03:47 -0600
        Re: Basic Python Questions - Oct. 31, 2013 Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-03 10:05 +0000
      Re: Basic Python Questions - Oct. 31, 2013 rusi <rustompmody@gmail.com> - 2013-11-03 10:28 -0800
        Re: Basic Python Questions - Oct. 31, 2013 Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-03 18:58 +0000
          Re: Basic Python Questions - Oct. 31, 2013 rusi <rustompmody@gmail.com> - 2013-11-03 20:07 -0800
    Re: Basic Python Questions - Oct. 31, 2013 Jim Gibson <JimSGibson@gmail.com> - 2013-11-03 10:18 -0800
      Re: Basic Python Questions - Oct. 31, 2013 Grant Edwards <invalid@invalid.invalid> - 2013-11-03 23:16 +0000
      Re: Basic Python Questions - Oct. 31, 2013 "E.D.G." <edgrsprj@ix.netcom.com> - 2013-11-04 23:22 -0600
        Re: Basic Python Questions - Oct. 31, 2013 88888 Dihedral <dihedral88888@gmail.com> - 2013-11-07 06:05 -0800
  Re: Basic Python Questions - Oct. 31, 2013 sigtool@kcl.ac.uk - 2013-11-10 06:40 -0800

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