TypeError: 'module' object is not callable (newby question)

[Charles Russell]

Marc 'BlackJack' Rintsch wrote:

> 
> Don't call your file `glob.py` because then you import this module and not
> the `glob` module from the standard library.
> 
> Ciao,
> 	Marc 'BlackJack' Rintsch

Yes, thanks.  Renaming to myglob.py solved the problem. But why does the 
conflict not occur when the code is run interactively from the python 
prompt?  Somewhat related - I haven't found the magic word to invoke a 
.py script from the python prompt (like  the command "source" in csh, 
bash, tcl?)  "import" runs the script, but then complains that it is not 
a module.