visualpython-users

[Visualpython-users] a new Linux install solution for Visual Python

[kirby u. <kir...@gm...>]

Apologies if this is the wrong list to report this:

I led a workshop in Chicago recently, wherein I spent some time advertising
the many virtues of Visual Python.

My "students" were DjangoCon developers and fellow travelers, some of whom
tend to be skilled packagers of installers.

When a couple of them realized there was no current installer for Linux,
with advice to use Wine, they promptly set about making such an installer.

Here's a blog post one of the wrote:

http://blog.maestropublishing.com/2013/09/03/installing-vpython-visual-python-on-linux/

I'm hoping the work gets integrated into the web site.  There's the option
to pip install as well.

Kirby

Re: [Visualpython-users] a new Linux install solution for Visual Python

[pataphor <pat...@gm...>]

On 09/08/2013 07:01 AM, kirby urner wrote:

> Apologies if this is the wrong list to report this:

Some time ago this mailing list was supposed to be moved to google 
groups. I am no big fan of google groups, because it is a centralized 
solution, and because I hate to have to use javascript in my browser.

There's nothing wrong with javascipt, but I just don't like the idea of 
executing programs without first having a chance to vet them. I am 
afraid to be very alone in this.

Anyway, if this message comes trough, the mailing list still seems to 
work, as does the interface to gmane. I just signed up to reply to your 
message.

> I led a workshop in Chicago recently, wherein I spent some time advertising
> the many virtues of Visual Python.
>
> My "students" were DjangoCon developers and fellow travelers, some of whom
> tend to be skilled packagers of installers.
>
> When a couple of them realized there was no current installer for Linux,
> with advice to use Wine, they promptly set about making such an installer.
>
> Here's a blog post one of the wrote:
>
> http://blog.maestropublishing.com/2013/09/03/installing-vpython-visual-python-on-linux/
>
> I'm hoping the work gets integrated into the web site.  There's the option
> to pip install as well.

The pip install downloaded the code from git, claimed success and then 
it didn't work. Then I noticed the code was already merged into the main 
vpython branch, so I tried to pip from there, with the same result.

Since I already had succeeded before to download and compile a previous 
version of vpython, I think it was a 6.5, I downloaded the zipfile and 
compiled that. I assume my wxpython compilation was still valid, but I 
had to manually download and install polygon, fonttools and ttfquery and 
compile again.

It seems to work now but I always get:

"Debug: Failed to connect to session manager: SESSION_MANAGER 
environment variable not defined"

printed to my terminal before it executes the script. Maybe that is a 
side-effect of my system configuration: Ubuntu 12.04 32 bit, and using 
an lxde desktop.

There seems to be a kind of problem in that I first have to resize the 
window to get anything in the window drawn. Also, I used to use the 
faces object a lot, and the fact that there isn't an option for opacity 
yet is a problem. On windows the opacity is set to zero I think so that 
my old programs still work there, but the ubuntu vpython version I 
compiled has opacity for faces set around .5 or so which gives very 
weird effects, especially when one tries to make a faces object two sided.

So now I'm wondering whether to convert my faces objects to pyramids, 
which do have opacity, or to wait until opacity is implemented. If 
there's an option in the source code somewhere to make opacity behave as 
it does in windows, that would help me a lot.

I had to use the trick of setting "enable_shaders = False" in 
site_settings.py because my system is just too slow if I leave that as 
it is.

As the situation is now I am still undecided about whether to go back to 
the standard ubuntu install of vpython 5.12 again, which works out of 
the box and has opaque faces objects, or to modify my code so that it 
doesn't use them anymore.

P.

Re: [Visualpython-users] a new Linux install solution for Visual Python

[Paul C. <PC...@sp...>]

I have a student running Vpython on a Mac who has run into a problem I've 
never seen before. She has an animation program that works. It creates 
objects, updates positions and such. However, the animation window itself 
is a featureless light gray box until the program is complete. Then the 
final state of the objects appears.

I've copied the program to my Windows VPython installation and it runs 
just fine. Well, the physics is wrong currently, but it does what it was 
told to do and I can see the full animation.

Has anyone seen this behavior before?


Dr. Paul J. Camp
Physics Department
Spelman College
Atlanta, GA   30314
404-270-5864

"The beauty of the cosmos derives not only from unity in variety
       but also from variety in unity"
                 -- Umberto Eco
                     The Name of the Rose

Re: [Visualpython-users] Weird vpython output

[Bruce S. <Bru...@nc...>]

Paul, it sounds like she doesn't have a rate statement in her animation
loop and is running VPython 6 whereas you're running VPython 5.


On Thu, Nov 21, 2013 at 2:49 PM, Steve Spicklemire <st...@sp...> wrote:

> I have not seen that. Can you post a simple script that shows the same
> issue?
>
> thanks,
> -steve
>
> On Nov 21, 2013, at 3:11 PM, Paul Camp <PC...@sp...> wrote:
>
> > Sorry, replied to a previous email and forgot to change the subject line.
> >
> >
> > Dr. Paul J. Camp
> > Physics Department
> > Spelman College
> > Atlanta, GA   30314
> > 404-270-5864
> >
> > "The beauty of the cosmos derives not only from unity in variety
> >       but also from variety in unity"
> >                 -- Umberto Eco
> >                     The Name of the Rose
> >
> >
> >
> > From:        Paul Camp <PC...@sp...>
> > To:
> > Cc:        "vis...@li..." <
> vis...@li...>
> > Date:        11/21/2013 05:10 PM
> > Subject:        Re: [Visualpython-users] a new Linux install solution
> for Visual        Python
> >
> >
> >
> > I have a student running Vpython on a Mac who has run into a problem
> I've never seen before. She has an animation program that works. It creates
> objects, updates positions and such. However, the animation window itself
> is a featureless light gray box until the program is complete. Then the
> final state of the objects appears.
> >
> > I've copied the program to my Windows VPython installation and it runs
> just fine. Well, the physics is wrong currently, but it does what it was
> told to do and I can see the full animation.
> >
> > Has anyone seen this behavior before?
> >
> >
> > Dr. Paul J. Camp
> > Physics Department
> > Spelman College
> > Atlanta, GA   30314
> > 404-270-5864
> >
> > "The beauty of the cosmos derives not only from unity in variety
> >      but also from variety in unity"
> >                -- Umberto Eco
> >                    The Name of the
> Rose------------------------------------------------------------------------------
> > Shape the Mobile Experience: Free Subscription
> > Software experts and developers: Be at the forefront of tech innovation.
> > Intel(R) Software Adrenaline delivers strategic insight and game-changing
> > conversations that shape the rapidly evolving mobile landscape. Sign up
> now.
> >
> http://pubads.g.doubleclick.net/gampad/clk?id=63431311&iu=/4140/ostg.clktrk_______________________________________________
> > Visualpython-users mailing list
> > Vis...@li...
> > https://lists.sourceforge.net/lists/listinfo/visualpython-users
> >
> >
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>
>
>
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Re: [Visualpython-users] Weird vpython output

[Paul C. <PC...@sp...>]

That's the solution! Thanks, Bruce.


Dr. Paul J. Camp
Physics Department
Spelman College
Atlanta, GA   30314
404-270-5864

"The beauty of the cosmos derives not only from unity in variety
       but also from variety in unity"
                 -- Umberto Eco
                     The Name of the Rose



From:   Bruce Sherwood <Bru...@nc...>
To:     "vis...@li..." 
<vis...@li...>
Date:   11/22/2013 12:57 AM
Subject:        Re: [Visualpython-users] Weird vpython output



Paul, it sounds like she doesn't have a rate statement in her animation 
loop and is running VPython 6 whereas you're running VPython 5.


On Thu, Nov 21, 2013 at 2:49 PM, Steve Spicklemire <st...@sp...> wrote:
I have not seen that. Can you post a simple script that shows the same 
issue?

thanks,
-steve

On Nov 21, 2013, at 3:11 PM, Paul Camp <PC...@sp...> wrote:

> Sorry, replied to a previous email and forgot to change the subject 
line.
>
>
> Dr. Paul J. Camp
> Physics Department
> Spelman College
> Atlanta, GA   30314
> 404-270-5864
>
> "The beauty of the cosmos derives not only from unity in variety
>       but also from variety in unity"
>                 -- Umberto Eco
>                     The Name of the Rose
>
>
>
> From:        Paul Camp <PC...@sp...>
> To:
> Cc:        "vis...@li..." <
vis...@li...>
> Date:        11/21/2013 05:10 PM
> Subject:        Re: [Visualpython-users] a new Linux install solution 
for Visual        Python
>
>
>
> I have a student running Vpython on a Mac who has run into a problem 
I've never seen before. She has an animation program that works. It 
creates objects, updates positions and such. However, the animation window 
itself is a featureless light gray box until the program is complete. Then 
the final state of the objects appears.
>
> I've copied the program to my Windows VPython installation and it runs 
just fine. Well, the physics is wrong currently, but it does what it was 
told to do and I can see the full animation.
>
> Has anyone seen this behavior before?
>
>
> Dr. Paul J. Camp
> Physics Department
> Spelman College
> Atlanta, GA   30314
> 404-270-5864
>
> "The beauty of the cosmos derives not only from unity in variety
>      but also from variety in unity"
>                -- Umberto Eco
>                    The Name of the 
Rose------------------------------------------------------------------------------
> Shape the Mobile Experience: Free Subscription
> Software experts and developers: Be at the forefront of tech innovation.
> Intel(R) Software Adrenaline delivers strategic insight and 
game-changing
> conversations that shape the rapidly evolving mobile landscape. Sign up 
now.
> 
http://pubads.g.doubleclick.net/gampad/clk?id=63431311&iu=/4140/ostg.clktrk_______________________________________________

> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>
> 
------------------------------------------------------------------------------
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game-changing
> conversations that shape the rapidly evolving mobile landscape. Sign up 
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> 
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> https://lists.sourceforge.net/lists/listinfo/visualpython-users


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[Visualpython-users] Weird vpython output

[Paul C. <PC...@sp...>]

Sorry, replied to a previous email and forgot to change the subject line.


Dr. Paul J. Camp
Physics Department
Spelman College
Atlanta, GA   30314
404-270-5864

"The beauty of the cosmos derives not only from unity in variety
       but also from variety in unity"
                 -- Umberto Eco
                     The Name of the Rose



From:   Paul Camp <PC...@sp...>
To: 
Cc:     "vis...@li..." 
<vis...@li...>
Date:   11/21/2013 05:10 PM
Subject:        Re: [Visualpython-users] a new Linux install solution for 
Visual  Python



I have a student running Vpython on a Mac who has run into a problem I've 
never seen before. She has an animation program that works. It creates 
objects, updates positions and such. However, the animation window itself 
is a featureless light gray box until the program is complete. Then the 
final state of the objects appears.

I've copied the program to my Windows VPython installation and it runs 
just fine. Well, the physics is wrong currently, but it does what it was 
told to do and I can see the full animation. 

Has anyone seen this behavior before? 


Dr. Paul J. Camp
Physics Department
Spelman College
Atlanta, GA   30314
404-270-5864

"The beauty of the cosmos derives not only from unity in variety
      but also from variety in unity"
                -- Umberto Eco
                    The Name of the Rose
------------------------------------------------------------------------------
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_______________________________________________
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Vis...@li...
https://lists.sourceforge.net/lists/listinfo/visualpython-users

Re: [Visualpython-users] Weird vpython output

[Steve S. <st...@sp...>]

I have not seen that. Can you post a simple script that shows the same issue?

thanks,
-steve

On Nov 21, 2013, at 3:11 PM, Paul Camp <PC...@sp...> wrote:

> Sorry, replied to a previous email and forgot to change the subject line. 
> 
> 
> Dr. Paul J. Camp
> Physics Department
> Spelman College
> Atlanta, GA   30314
> 404-270-5864
> 
> "The beauty of the cosmos derives not only from unity in variety
>       but also from variety in unity"
>                 -- Umberto Eco
>                     The Name of the Rose 
> 
> 
> 
> From:        Paul Camp <PC...@sp...> 
> To:         
> Cc:        "vis...@li..." <vis...@li...> 
> Date:        11/21/2013 05:10 PM 
> Subject:        Re: [Visualpython-users] a new Linux install solution for Visual        Python 
> 
> 
> 
> I have a student running Vpython on a Mac who has run into a problem I've never seen before. She has an animation program that works. It creates objects, updates positions and such. However, the animation window itself is a featureless light gray box until the program is complete. Then the final state of the objects appears.
> 
> I've copied the program to my Windows VPython installation and it runs just fine. Well, the physics is wrong currently, but it does what it was told to do and I can see the full animation. 
> 
> Has anyone seen this behavior before? 
> 
> 
> Dr. Paul J. Camp
> Physics Department
> Spelman College
> Atlanta, GA   30314
> 404-270-5864
> 
> "The beauty of the cosmos derives not only from unity in variety
>      but also from variety in unity"
>                -- Umberto Eco
>                    The Name of the Rose------------------------------------------------------------------------------
> Shape the Mobile Experience: Free Subscription
> Software experts and developers: Be at the forefront of tech innovation.
> Intel(R) Software Adrenaline delivers strategic insight and game-changing 
> conversations that shape the rapidly evolving mobile landscape. Sign up now. 
> http://pubads.g.doubleclick.net/gampad/clk?id=63431311&iu=/4140/ostg.clktrk_______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
> 
> ------------------------------------------------------------------------------
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