Simple questions on use of objects (probably faq)

[Matt Hammond]

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/