making objects with individual attributes!

[Gary Herron]

Alejandro wrote:
> I have created a class:
>
> class document:
>
>     titre = ''
>     haveWords = set()
>
>     def __init__(self, string):
>
>         self.titre = string
>
> #########
>
> doc1 = document('doc1')
> doc2 = document('doc2')
>
> doc1.haveWords.add(1)
> doc2.haveWords.add(2)
>
>
> print doc1.haveWords
>
> # i get set([1, 2])
>
>
> doc1 and doc are sharing attribute haveWords!
> Why ??? there's a way to assign every objetc "document" a different
> "set"
>   
Of course.  Try this:

class document:
    def __init__(self, string):
        self.titre = string
        self.haveWords = set()

Each instance creation will call __init__ with the instance 
accessible through self, and that code will create two instance
specific attributes.

Don't use so called class level attributes (as in your example) 
unless you  *want* sharing between all instances of a class.

Gary Herron