In article <kp4jf4$5fu$1...@dont-email.me>, Rui Maciel <rui.mac...@gmail.com> wrote: > Essentially, a Model object stores lists of Point objects and Line objects, > and Line objects include references to Point objects which represent the > starting and ending point of a line. > > class Point: > position = [] > > def __init__(self, x, y, z = 0): > self.position = [x, y, z] > > class Line: > points = () > def __init__(self, p_i, p_f): > self.points = (p_i, p_f) > > class Model: > points = [] > lines = [] > > > It would be nice if, whenever a Point object was updated, the Line objects > which are associated with it could reflect those updates directly in > Line.p_i and Line.p_f.
Have you tried running the code you wrote? It does that already! When you do something like: my_list = [obj1, obj2] in Python, the objects are stored by reference (not just lists, all assignments are by reference). -- http://mail.python.org/mailman/listinfo/python-list
