Torsten Bronger wrote: > Hallöchen! > > "Fuzzyman" <[EMAIL PROTECTED]> writes: > > > [...] > > > > I'm not entirely clear what you are trying to do > > The following: "variables.py" looks like this > > a = 1 > b = 2 > > Then I have helper_a.py, helper_b.py, and helper_c.py which begin > with > > from variables import * > > And finally, my_module.py starts with > > from variables import * > from helper_a.py import * > from helper_c.py import * > from helper_c.py import * > > Now imagine that variables.py contained not only two but hundreds of > variables. Is this then still the most effective approach? >
Hello Torsten, This looks like the most effective approach to me. The additional cost of the extra import statements would be very low. The alternative would be to parse a config file and pass a data structure (containing all the variables) between your modules. I can't imagine there is less overhead in this. Either that or refactor so you only use the variables in one place. > > *but* - if you import the same module in several places (per > > interpreter instance of course) the import will only be done > > *once*. The other import statments just make that namespace > > available from the namespace that does the import. > > Even if I use "from"? > Yes - all you do with the 'from' approach is get a direct reference to that value, it still exists in it's original namespace. import module value = module.value and : from module import value are exactly equivalent. The only difference is that the first construct makes the whole of the 'module' namespace available as well - it no less exists with the second construct though... you're just not keeping a reference to it directly. Not using the 'from' construct requires a bit of extra typing - but is more explicit as to where the variables are coming from. This might make your code a bit more readable. Regards, Fuzzyman http://www.voidspace.org.uk/python/index.shtml > Tschö, > Torsten. > > -- > Torsten Bronger, aquisgrana, europa vetus -- http://mail.python.org/mailman/listinfo/python-list
