Concerning the problem: reversing a string
I think, since
print x,
inserts a space after printing x, it
is better first to construct the backword
and then return it to a print-statement:
For instance:
>>> def backword(s):
s = list(s)
s.reverse()
return ''.join(s)
>>> print backword("abraham")
maharba
>>>
Have fun!
Gregor