modify element of a list.

[Steve Holden]

KraftDiner wrote:
> Hi I have a list of Ojbects... I want to change one of the objects in
> the list for a new object....
> How do I replace an existing object with a new one and maintain the
> list order..
> 
> This is what I have...
> 
> def setAttribute(self, desc, value):
>    n = anObject(desc, value)
>    for o in self.Objects:
>       if o.getDescription() == desc:
>          self.Objects.replace(o, n) #Replace o with n?
>          return
>    self.Objects.append(n)
> 
> It's the replace in place that I don't know how to do...
> 
There are a number of ways. I suspect the simplest would be (untested):

def setAttribute(self, desc, value):
     n = anObject(desc, value)
     for i, o in enumerate(self.Objects):
         if o.getDescription() == desc:
             self.Objects[i] = n
             return
         self.Objects.append(n)

regards
  Steve
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