Your list probably contains several references to the same object, instead of several different objects. This happens often when you use a technique like:
list = [ object ] * 100 ..because although this does make copies when "object" is an integer, it just makes references in other cases. [EMAIL PROTECTED] wrote: > The Problem (very basic, but strange): > > I have a list holding a population of objects, each object has 5 vars > and appropriate funtions to get or modify the vars. When objects in > the list have identical vars (like all = 5 for var "a" and all = 10 for > var "b" across all vars and objects) and i change > > self.mylist[i].change_var_a(5) > > to a new value, in this case var "a" in object i to 5, now all vars of > type "a" in all objects in my list are changed to 5 instead of just var > "a" in object mylist[i], which is my goal. > > if i print self.mylist[i].return_var_a() right after I change var "a" > in object i, I get the correct change, however when i print out the > whole list, the last change to var "a" in the last object modified > takes over for all objects in the list. > > note: all the vars not being modified must be the same across all > objects in the list, the var being modified need not be the same as the > one before it in the list (but will be once just one of the identical > object are changed). The value changed in the last object var modified > takes over for all object vars making them exactly identical. > > ****If, for example, half the list has objects with random vars init. > and the other half is identical, as above, and I perform the same > operation, as above, to one of the identical var objects > > self.mylist[i].change_var_a(5) (to an object that has identicals in the > list) > > all the identicals are changed in the same way as above, however the > objects that have different var values are unchanged. > > > > What is python doing? Am I missing something? Any ideas at all would be > wonderful? > -- http://mail.python.org/mailman/listinfo/python-list
