Re: [Visualpython-users] non standard install of vpython-4.beta16

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

I have no idea how/why your two different Python 2.5's behave 
differently. I do notice that the Sage download, which bundles together 
a large number of packages, includes numeric rather than numpy, but you 
seem to have numpy installed. And in any case the error message 
concerning Unicode. Sorry! I hope someone else has a clue.

There is indeed a known bug in the autoconf machinery for creating the 
vpython convenience script. On the download page at vpython.org there is 
a suggestion to use a script like this (which you presumably figured out 
for yourself):

cd /usr/local/lib/python2.5/site-packages/visual/examples
/usr/local/bin/python2.5  /usr/local/lib/python2.5/idlelib/idle.pyw

Bruce Sherwood

Jaap Spies wrote:
> I tried to install Visual with the python version coming with SAGE:
> http://www.sagemath.org/
> 
> 
> "make install" fails to make an executable vpython:
> 1) there is still a ${prefix} in the file vpython
> 2) IDLE points to the wrong place
> 
> But running vpython then fails:
> 
>> Python 2.5.1 (r251:54863, Aug 12 2007, 13:20:03) 
>> [GCC 4.1.2 20070502 (Red Hat 4.1.2-12)] on linux2
>> Type "copyright", "credits" or "license()" for more information.
>>
>>     ****************************************************************
>>     Personal firewall software may warn about the connection IDLE
>>     makes to its subprocess using this computer's internal loopback
>>     interface.  This connection is not visible on any external
>>     interface and no data is sent to or received from the Internet.
>>     ****************************************************************
>>     
>> IDLE 1.2.1      
>>>>> ================================ RESTART ================================
>>>>>
>> Traceback (most recent call last):
>>   File "/home/jaap/work/downloads/sage-2.7.3/local/lib/python2.5/site-packages/visual/examples/bounce.py", line 1, in <module>
>>     from visual import *
>>   File "/home/jaap/downloads/sage-2.7.3/local//lib/python2.5/site-packages/visual/__init__.py", line 27, in <module>
>>     import cvisual
>> ImportError: /usr/lib/libboost_python.so.2: undefined symbol: PyUnicodeUCS4_FromEncodedObject
>>
>>
> 
> No problems with libboost_python when I install visual-4.beta16 with my standard python2.5
> What is going on here?
> 
> Jaap
> 
> 
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