pass data from optparse to other class instances

[Diez B. Roggisch]

Tim Arnold schrieb:
> Hi,
> I'm writing a command-line interface using optparse. The cli takes
> several options with a single action and several parameters to be used
> in the resulting worker classes.
> 
> I've been passing parameters from optparse to the workers in two ways:
> (1) creating a Globals.py module, set parameters once in the cli code
> and read it
> when needed in the worker class methods. Something like this:
> import Globals
> class Foo(object):
>     def __init__(self):
>         if Globals.debug:
>             etc
> (2) passing a parameter directly to the worker class __init__ method:
> class Bar(object):
>     def __init__(self, verbose=False):
>         etc
> 
> Are those methods the best/only ways to pass these parameters around?
> What's the smart way to do it?

Essentially these are the two ways - and there is not "the" way. Both 
approaches are reasonable.

Generally it is better to refuse the temptation to work with global 
state - becaues only that ensures that code is de-coupled and more 
responsible regarding state.

However there is no need to jump through overly high mounted hoops to 
reach that - especially when config-options affect overall program 
behaviour, such as verbosity.

So - no clear answer, sorry :)

Diez