Dictionary, iterate & update objects

[Bruno Desthuilliers]

jansenh a écrit :
> hi comp.lang.python.
> 
> I need some newbe advice on idiomatic use of Python dictionaries.
> 
> I have service with a dictionary which holds a bunch of objects as
> values, and an ID as key to each object. Then I want to change an
> objects state based on its key.

class MyObj(object):
   def __init__(self, foo):
     self.foo = foo

objs = {
   'foo': MyObj('foo'),
   'bar', MyObj('bar'),
   }

objs['foo'].foo = 42

for key, obj in objs:
   print "%s : %s" % (key, obj.foo)

> The way I am doing this now is by using
> 'fromkeys' and copying my object over in a temporary dictionary, then
> manipulating the object, and then I do an 'update' back to the main
> dictionary..  :-0

My my my...

> There has to be a smarter way?

Indeed. Usually, with Python, "smarter" => "simplest"

HTH