Hi, > 3: Why canøt I say and get the maximum of instance attributes and a > list of them? > y_max=max(y[].x) and > ys=[y[].x]
y_max = max([e.x for e in y]) See "List comprehensions" in python docs: http://docs.python.org/tut/node7.html#SECTION007140000000000000000 > 4: Can I avoid the dummy counter i in the for loop and do something > like: > yz=[y[:-1].x-y[1:].x] yz = [e.x for e in y] yz.reverse() -- | Matt Hammond | R&D Engineer, BBC Research & Development, Tadworth, Surrey, UK. | http://kamaelia.sf.net/ | http://www.bbc.co.uk/rd/ -- http://mail.python.org/mailman/listinfo/python-list