python variable sharing between packages/modules

Question

trying to understand and learn how to write packages... testing with something i\'ve always used, logging...

Can you please help me understand why the \'log\' variable i

Answer 1

Your main.py doesn't do anything to define the name log in the global namespace. Importing a module can define names in the namespace of that module, but can't put anything in the global namespace.

In your main.py you should add this statement:

from clusterlogging.differentlogging import log

By the way, I that is such a long module name, I would use import as:

import clusterlogging.differentlogging as difflogging
log = difflogging.log

EDIT: I originally recommended this but it won't work:

from difflogging import log  # doesn't work

You might even want to use a really short name like dl:

import clusterlogging.differentlogging as dl
dl.log('whatever')

Since dl is really short, maybe you don't need to get log bound in the global namespace.

Also, you could get every name from a module by using import * but this is not recommended.

from clusterlogging.differentlogging import *  # not recommended

You usually don't want to clutter the global namespace with all the stuff defined in a module. Import just what you need. This is tidier and helps document what you are actually using.