On Thu, 16 Oct 2008 08:04:23 -0700, Astley Le Jasper wrote:
> I'm creating mulitple instances, putting them in a list, iterating
> through the list to send them to some functions where process them with
> some instance specific parameters. Something along the lines of:
>
> bob = someobject()
> harry = someobject()
> fred = someobject()
>
> parameterdict = {'bob': (0,1,2), 'harry': (3,4,5), 'fred': (6,7,8)}
> people_list = (bob, harry, fred)
>
> for person in people_list:
> add_parameters(person)
>
> def add_parameters(person)
> mytuple = parameterdict[??????instance.name????]
> person.x = mytuple[0]
> person.y = mytuple[1]
> person.z = mytuple[2]
>
> ... alternatively there is probably a very much easier way of doing it.
Assuming that someobject() objects are hashable, you can do this:
# use the objects themselves as keys, not their names
parameterdict = {bob: (0,1,2), harry: (3,4,5), fred: (6,7,8)}
people_list = [bob, harry, fred]
but of course that doesn't work if someobject() items aren't hashable
(say, lists or dicts).
But in my opinion, this is probably the best way (untested):
def add_parameters(person, x, y, z):
# note we don't use any global variables
person.x = x
person.y = y
person.z = z
parameters = [(0,1,2), (3,4,5), (6,7,8)]
people = [bob, harry, fred]
for person, args in zip(people, parameters):
add_parameters(person, *args)
--
Steven
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