reversing a string

[nilamo]

I would say the "pythonic" way, would be to use the itertools module. Though, I doubt your professor would appreciate seeing that lol. Unfortunately, itertools is written in c, not python, so seeing how you could do that yourself doesn't really help: https://github.com/python/cpython/blob/m...le.c#L3424

>>> text = 'Hello World'
>>> text = ' '.join(text.split()[::-1])
>>> text
'World Hello'
>>> import itertools
>>> for permutation in itertools.accumulate(text):
...   print(permutation)
...
W
Wo
Wor
Worl
World
World
World H
World He
World Hel
World Hell
World Hello

That said, if I were to write it in python, I would probably do something like this:

>>> def accum(iterable):
...   iterable = iter(iterable)
...   total = next(iterable)
...   yield total
...   for remaining in iterable:
...     total += remaining
...     yield total
...
>>> text
'World Hello'
>>> list(accum(text))
['W', 'Wo', 'Wor', 'Worl', 'World', 'World ', 'World H', 'World He', 'World Hel', 'World Hell', 'World Hello']