itertools.accumulate() versus functools.reduce()

Question

In Python 3.3, itertools.accumulate(), which normally repeatedly applies an addition operation to the supplied iterable, can now take a function argument as a parameter; this me

Answer 1

itertools.accumulate is like reduce but returns a generator* instead of a value. This generator can give you all the intermediate step values. So basically reduce gives you the last element of what accumulate will give you.

*A generator is like an iterator but can be iterated over only once.