liam_herron wrote: > > Given: > dw = [ 1, -1.1, +1.2 ] > > Suppose I want to create a list 'w' that is defined as > > w[0] = dw[0], > w[1] = w[0] + dw[1], > w[2] = w[1] + dw[2] > > Is there a list comprehension or map expression to do it in one or 2 > lines.
>>> from itertools import * >>> data = [1, -1.1, 1.2] >>> N = 2 >>> [sum(item) for item in izip(*[chain(repeat(0, i), di) for i, di in enumerate(tee(data, N))])] [1, -0.10000000000000009, 0.099999999999999867] Should work for other values of N, too. No, I'm not serious about it... Peter -- http://mail.python.org/mailman/listinfo/python-list