[Python] scipy code runs in empty directory, not another

[Benjamin Kaplan]

On Saturday, November 13, 2010, Chris Gonnerman
<chris.gonnerman at newcenturycomputers.net> wrote:
> On 11/13/2010 07:52 AM, Beliavsky wrote:
>
> After installing numpy, scipy, and matplotlib for python 2.6 and
> running the code from http://www.scipy.org/Cookbook/OptimizationDemo1
> (stored as xoptimize.py) in a directory with other python codes, I got
> the error messages
>
> C:\python\code\mycode>python xoptimize.py
> Traceback (most recent call last):
>    File "xoptimize.py", line 3, in<module>
>      from pylab import *
>    File "c:\python26\lib\site-packages\pylab.py", line 1, in<module>
>      from matplotlib.pylab import *
>    File "c:\python26\lib\site-packages\matplotlib\__init__.py", line
> 133, in<module>
>      import sys, os, tempfile
>    File "c:\python26\lib\tempfile.py", line 34, in<module>
>      from random import Random as _Random
>    File "C:\python\code\mycode\random.py", line 1, in<module>
>      from RandomArray import standard_normal
>    File "C:\python\code\mycode\RandomArray.py", line 1, in<module>
>      import ranlib
> ImportError: No module named ranlib
>
> When I create a new directory, copy xoptimize.py there, and run, the
> program works. Can someone explain why other files are "interfering"
> in the first case? Thanks.
>
> You'd need to post a list of the files in the directory before we'd have any idea why this is happening.

No he doesn't. We can get that from the traceback.


Bekiavsky, there's a file called random.py in your folder. Python
doesn't treat the standard library fila any differently than it does
your own files. It searches the path for the first  file called
"random" that it sees and it imports that. Since it finds your file
first, that's the one it imports. The failure you're seeing is
actually in your code-you're trying to import a module that shouldn't
exist.
In

>
> -- Chris.
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>