Antoon Pardon wrote: > I had written my own module, which works similarly but > is somewhat extended. Here is an example of how it can > be used and how I would like to use it but get stuck. > > from extreme import Top >>>> Top > Top >>>> Top + 1 > Top >>>> Top - 30 > Top >>>> Top > 1e99 > True >>>> lst = range(10) >>>> lst[:Top] > Traceback (most recent call last): > File "<stdin>", line 1, in ? > TypeError: slice indices must be integers or None > > So this is where I am stuck. I need this Top value in > a context where it can be used as a start or stop value > in a slice. My idea was that since a stop value greater > than the length of lst in this context would simply return > a copy of lst, using Top in such a way should behave so > too. However I don't see a way of doing that. > > So can someone provide ideas to get this behaviour?
>>> import sys >>> class Top(object): ... def __index__(self): ... return sys.maxint ... >>> Top = Top() >>> range(5)[:Top] [0, 1, 2, 3, 4] This can of course fail in many interesting ways... Peter -- http://mail.python.org/mailman/listinfo/python-list
