On 8/11/2010 8:48 AM Pete said...
Hi,

A common line I've seen in Python code I come across is:

#!/usr/bin/python
import os
import sys
import errors
<snip>
... so there seem to be more than one 'errors.py' - one for the email module, 
one for Skype4Py, etc.

How does the interpreter know which one to import?

Importing looks in directories in sequence as held in sys.path

Python 2.4.3 (#1, Sep  3 2009, 15:37:12)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> for ii in sys.path: ii
...
''
'/usr/lib/python24.zip'
'/usr/lib/python2.4'
'/usr/lib/python2.4/plat-linux2'
'/usr/lib/python2.4/lib-tk'
'/usr/lib/python2.4/lib-dynload'
'/usr/lib/python2.4/site-packages'
'/usr/lib/python2.4/site-packages/Numeric'
'/usr/lib/python2.4/site-packages/gtk-2.0'


HTH,

Emile

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