Remember that scene from the matrix?
You know the part where Neo and Trinity are in the training program
when he loads all those guns which come flying in from the white
horizon until all the racks of weaponry are rushing past
them?

Yeah...

That part.

Well, I was going to be kickin it in a chair
whilst a whole lot of whatever-it-is-that-I-feel-like
will be flying past.

Least, that's what this screen shot is showing.
the primary setup.

>>> n_lst = [ int(x) for x in list(str(n))]
>>> n_lst
[2, 5, 6]
>>> def to_lst(n):
...     return [ int(x) for x in list(str(n))]
...
>>> to_lst(2356)
[2, 3, 5, 6]
>>> def to_num_list(lst):
...     l = ''
...     for n in [str(x) for x in lst]:
...             l += n
...     return int(l)
...
>>> to_num_list([2,5,5])
255
>>>