Can't import modules

[cjgohlke at gmail.com]

On Sunday, September 30, 2012 5:35:02 PM UTC-7, Peter Farrell wrote:
> Thanks for trying to help, everybody. Sorry I didn't post the whole error message. Now my problem is I just installed VPython and I'm trying to run the very first example, bounce.py which I located. I opened it and ran it in Idle. I got this message:
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> Traceback (most recent call last):
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>   File "C:\Python32\Lib\site-packages\visual\examples\bounce.py", line 1, in <module>
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>     from visual import *
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>   File "C:\Python32\lib\site-packages\visual\__init__.py", line 1, in <module>
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>     from .visual_all import *
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>   File "C:\Python32\lib\site-packages\visual\visual_all.py", line 1, in <module>
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>     from vis import version
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>   File "C:\Python32\lib\site-packages\vis\__init__.py", line 3, in <module>
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>     from .cvisual import (vector, dot, mag, mag2, norm, cross, rotate,
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> SystemError: initialization of cvisual raised unreported exception
> 
> 

Works for me on win-amd64-3.2. 

Do you have the numpy package installed? The cvisual extension module uses the numpy C API. The SystemError is expected if numpy is not installed.

Install numpy-MKL-1.6.2.win-amd64-py3.2.‌exe from http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy if you are using VPython-5.74.win-amd64-py3.2.‌exe.

Christoph

> I'm not a programmer, just a math teacher/tutor who's trying to teach my students to understand math through using something real like Python. I'll keep you posted on my progress.
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> Thank you in advance for your help!
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> 
> Peter
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> 
> 
> On Sunday, September 30, 2012 1:22:31 PM UTC-7, Hans Mulder wrote:
> 
> > On 30/09/12 21:42:37, Peter Farrell wrote:
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> > 
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> > > I'm still new to Python, so here's another easy one. After I save something
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> > 
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> > > I've done as a .py file, how do I import it into something else I work on?
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> > > Every time I try to import something other than turtle or math, I get this error message:
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> > > 'module' object is not callable
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> > > What am I doing wrong?
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> > For starters, you're not showing us any code.
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> > The error message suggests that you have successfully imported
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> > a module, and you then try to use the module as if it were a
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> > callable.  That won't work: modules are not callable.
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> > My crystal ball says that you may have been a Java programmer
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> > in an earlier life.  In Java, a file must define exactly one
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> > class, and the class must have the same name as the file.
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> > Python is not Java.  In Python, a file may define one class,
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> > or twenty, or none at all.  To avoid confusion, do not give
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> > any of your classes the same name as any of your files.
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> > Hope this helps,
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> > -- HansM