[Tutor] How does it work?

[Alan Gauld]

"Neo Vector" <neo_vector at yahoo.com> wrote 

> Could you explain me how does it work, pls?
> ==============================
>>>>r = ''

r is an empty string

>>>>for c in 'abcd':

c takes the value of each letter in turn

>            r = c + r

strings can be added such that the result is the 
concatenation of the two strings. So in this case:
r becomes the sum of its old value and the current value of c

repeat for the next value of c.

If that doesn't help then tell us which bit(s) of it you 
don't understand.

HTH,

-- 
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/