Luke Plant wrote: > You should note that, to a nearest equivalent, all variables are > reference variables in Python. The difference is in what assignment > does - += in Python does an assignment of a new object for immutable > objects. For mutable objects like lists, += does an in place > modification.
that depends on the object implementation, though -- the "+=" statement does not, in itself, distinguish between mutable and immutable objects. </F> -- http://mail.python.org/mailman/listinfo/python-list
