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Wondering in the Python Forrest

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  Wondering in the Python Forrest ray <ray@aarden.us> - 2011-07-30 04:13 -0700
    Re: Wondering in the Python Forrest Ken Watford <kwatford+python@gmail.com> - 2011-07-30 09:46 -0400
      Re: Wondering in the Python Forrest duncan smith <buzzard@urubu.freeserve.co.uk> - 2011-07-30 17:53 +0100
    Re: Wondering in the Python Forrest Terry Reedy <tjreedy@udel.edu> - 2011-07-30 09:56 -0400

#10575 — Wondering in the Python Forrest

I am new to Python and am learning for engineering and scientific
use.  For some reason, which I don’t remember, I went to Scipy.org
downloaded the module.  I am sure it had explained things but that was
a couple weeks ago and it’s all a blur.  So now I am working in
Pythonxy.  One of my activities is to work with data from Excel.  I
found the cvs reader and started researching its use.  I found that
structured data could be presented in Python using a module in
wxPython.

Where am I?  I do not know the relationships between the Pythons.  I
feel that I am missing something.  I started with Python as it has so
much functionality and a huge user group of very helpful individuals
and sites.  Now that I have delved deeper, it seems I need different
Pythons.

I would like to understand how to use all this functionality,
logistically.  If I have a series of tasks to perform, do I open a
session in one, read in data from a source, manipulate it, write it
out, open another Python type, read in the manipulated data, perform
other actions, write it out, close that and then open another to
display?  Is there a more coherent way to do this?

I would appreciate any help in better understanding how to use all
these tools.

Thanks,
Ray

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#10580

On Sat, Jul 30, 2011 at 7:13 AM, ray <ray@aarden.us> wrote:
> I found that structured data could be presented in Python using a module in
> wxPython.
>
> Where am I?  I do not know the relationships between the Pythons.  I
> feel that I am missing something.  I started with Python as it has so
> much functionality and a huge user group of very helpful individuals
> and sites.  Now that I have delved deeper, it seems I need different
> Pythons.

I think the name has caused you some confusion. wxPython is not a
different Python, it's a package for Python that displays GUI
components using the C++ "wxWidgets" library.

While there are other Pythons out there, for scientific work you
should have everything you need in the one you've got. You may have to
install an additional package now and then, but that's it.

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#10588

Ken Watford wrote:
> On Sat, Jul 30, 2011 at 7:13 AM, ray <ray@aarden.us> wrote:
>> I found that structured data could be presented in Python using a module in
>> wxPython.
>>
>> Where am I?  I do not know the relationships between the Pythons.  I
>> feel that I am missing something.  I started with Python as it has so
>> much functionality and a huge user group of very helpful individuals
>> and sites.  Now that I have delved deeper, it seems I need different
>> Pythons.
> 
> I think the name has caused you some confusion. wxPython is not a
> different Python, it's a package for Python that displays GUI
> components using the C++ "wxWidgets" library.
> 
> While there are other Pythons out there, for scientific work you
> should have everything you need in the one you've got. You may have to
> install an additional package now and then, but that's it.

And pythonxy (http://www.pythonxy.com/) is basically that very same 
Python bundled together with additional scientific packages to save the 
hassle of installing them separately.

Duncan

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#10582

On 7/30/2011 7:13 AM, ray wrote:
> I am new to Python and am learning for engineering and scientific
> use.  For some reason, which I don’t remember, I went to Scipy.org
> downloaded the module.  I am sure it had explained things but that was
> a couple weeks ago and it’s all a blur.  So now I am working in
> Pythonxy.  One of my activities is to work with data from Excel.  I
> found the cvs reader and started researching its use.  I found that
> structured data could be presented in Python using a module in
> wxPython.
>
> Where am I?  I do not know the relationships between the Pythons.  I
> feel that I am missing something.  I started with Python as it has so
> much functionality and a huge user group of very helpful individuals
> and sites.  Now that I have delved deeper, it seems I need different
> Pythons.
>
> I would like to understand how to use all this functionality,
> logistically.  If I have a series of tasks to perform, do I open a
> session in one, read in data from a source, manipulate it, write it
> out, open another Python type, read in the manipulated data, perform
> other actions, write it out, close that and then open another to
> display?  Is there a more coherent way to do this?
>
> I would appreciate any help in better understanding how to use all
> these tools.

'Python' is a language with multiple versions. Python2.x is the older 
series, but still in use Python3.x is the newer series of versions. 
Pythonx.y is a particular version.

CPython is the main *implementation* of Python. It comes with a standard 
library of modules that you can import. Other people provide other 
modules and packages of modules that you can import.

Numpy is a package for numerical computation with multi-dimensional 
arrays. Scipy is a package for scientific computation that uses numpy.

There are several packages for adding a graphical user interface to a 
program. WxPython is one of those. It is the Python wrapper for the 
wxwidgets library. It is not a 'python' in itself.

Terry

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