Reverse word

[perfringo]

There is built-in module textwrap which can be used to get desired results:

>>> from textwrap import wrap
>>> a = 'python'
>>> ''.join(reversed(wrap(a, width=2)))         # [::-1] can be used instead of reversed
onthpy

Just for fun: inefficient mental exercise :

>>> a = 'python'
>>> ''.join([a[a.index(x):a.index(x) + 2] for x in a][::2][::-1])
onthpy