Convert a flat list to list of lists in python

Question

One may want to do the contrary of flattening a list of lists, like here: I was wondering how you can convert a flat list into a list of lists.

In numpy you could do

Answer 1

>>> l = ['a', 'b', 'c', 'd', 'e', 'f']
>>> zip(*[iter(l)]*2)
[('a', 'b'), ('c', 'd'), ('e', 'f')]

As it has been pointed out by @Lattyware, this only works if there are enough items in each argument to the zip function each time it returns a tuple. If one of the parameters has less items than the others, items are cut off eg.

>>> l = ['a', 'b', 'c', 'd', 'e', 'f','g']
>>> zip(*[iter(l)]*2)
[('a', 'b'), ('c', 'd'), ('e', 'f')]

If this is the case then it is best to use the solution by @Sven Marnach

How does zip(*[iter(s)]*n) work