Python Lesson Learned

Python Lesson Learned

[Dockeen]

I noticed something interesting this evening.  I was playing
with the Cygwin version of dislin.  I got everything going for
C and Perl, but Python was complaining of an interpreter
mismatch.

I did a python -v, and saw it was reporting using a flavor of release
2.1.  Now, after flailing around a little bit with uninstalling
and reinstalling Python, I finally used my anemic brain and noticed
something important.  Somehow (probably through incompetence or
fumble fingering by me), I had ended up with two installations
of Python, one in /usr/local/bin, and the newer one in /usr/bin,
and the older one was being found first.  I deleted the older
stuff and now things are working well with dislin. (Oh yeah, 
python -v reports version 2.2 being used too).

I don't know how many folks out there use Python in Cygwin, but
I thought my misfortune might be of use to someone some day, even
if only for humor value.

Wayne Keen

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Re: Python Lesson Learned

[Jason Tishler]

Wayne,

On Sat, Jun 08, 2002 at 12:14:52AM +0600, Dockeen wrote:
> I noticed something interesting this evening.  I was playing
> with the Cygwin version of dislin.  I got everything going for
> C and Perl, but Python was complaining of an interpreter
> mismatch.

The above is an unfortunate fact with (at least) Cygwin Python --
shared extensions built for one version of Python will *not* work with
any other version.

> [snip]
> Somehow (probably through incompetence or
> fumble fingering by me), I had ended up with two installations
> of Python, one in /usr/local/bin, and the newer one in /usr/bin,
> and the older one was being found first.

Note that the version in /usr/local is not from a standard Cygwin
package.  Did you ever build Python yourself?

Jason

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Re: Python Lesson Learned

[Dockeen]

With regards to having built Python, that was one of the 
first questions I asked myself when I saw what the problem
was and where the other release was.

I sure don't remember doing so, but that means about, well
nothing.  I have built gcc many times lately, maybe that
has damaged MY memory.

On the plus side, I did get dislin working with Cygwin.
I had used it a lot with Python, but in this case the
"regular" Python I had installed through Windows (VPython).
I have found the graphics from dislin very useful in my 
work, particularly for displaying focal plane data.  I'm
going to work on porting some of my tools over the C to
get a speed boost, so getting this working last night makes
me a happy camper.  (Of coarse, my 8 year old hasn't started
making request/demands yet this morning)

In case I managed to interest someone through my babbling
about dislin, here is the web site:

http://www.linmpi.mpg.de/dislin/

Wayne Keen

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Re: Python Lesson Learned

[Nicholas Wourms]

Wayne,

Either you have some serious clock drift issues or its Christmas
already... ;-)


From: "Dockeen" <dockeen@mchsi.com>
To: cygwin@cygwin.com 
Subject: Re: Python Lesson Learned
Date: Wed, 25 Dec 2002 18:58:03 +1000 
           ^^^^^^^^^^^

Cheers,
Nicholas
--- Dockeen <dockeen@mchsi.com> wrote:
> With regards to having built Python, that was one of the 
> first questions I asked myself when I saw what the problem
> was and where the other release was.
> 
...

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