[Tutor] Need help with a couple of concepts
Fri, 3 Mar 2000 14:45:39 -0500
On Fri, Mar 03, 2000 at 02:13:24PM -0500, Robin B. Lake wrote:
> 1. Am modifying some code. There is at the bottom:
> if __name__ == '__main__':
> and after the imports:
> def main():
> What is this all about?
If you call this module from command line, like
$ python <whatever>.py
then, '__name__' variable will be '__main__' string. But, if you import
into another module or program, then '__name__' variable will be its
module name. By testing for how it was called, you can run 'main()'
> 2. I have some code from a Python book that requires the kjbuckets
> extension module. I've downloaded the kjbuckets module. Where in
> the Mac directory tree should I put it so that Python will find it
> when needed?
Proper ways are
- set 'PYTHONPATH=...'
- install under "site-python" directory which usually is at the same
level as standard "python1.5".
To find out the standard path,
>>> import sys