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" -- http://mail.python.org/mailman/listinfo/python-list