Re: Problems on Installing New Fipy

On Jul 18, 2008, at 4:00 PM, Zhiwen Liang wrote:

> So that's what Line 102-103 in viewers/__init__.py do.

Yes, I know. I wrote it. Can I suggest that both of our time would be  
better spent if you sent me the specific output that I asked for  
rather than trying figure out and then explain to me how my own code  
works?

> But I am not sure why "remove" will use "__nonzero__".

Nor am I. Python 2.4 and 2.5 don't do this. I suspect that it was a  
bug, or at least a bad design, in Python 2.3. As Daniel has said,  
Python 2.3 is quite old (3 1/2 years, now) and you would likely  
benefit in many ways from not using something so obsolete.

> I tried "vars.remove(var)" in an older version of fipy and it works  
> fine.

Variable.__nonzero__() was only introduced about a month ago.

> I am still checking my other installation problems to see if I made  
> some stupid mistakes.

Again. Please, Please, *PLEASE* send me the output that I asked for.  
What does

   >>> import pylab
   >>> pylab.__file__

output?

Seriously. I want to know.