[EMAIL PROTECTED] wrote: >>> mystr = 'my string' > > I would have then thought of the contents of mystr as: > > indices 0 1 2 3 4 5 6 7 8 > content m y s t r i n g > > with mystr[:3] = 'my ' > > Can someone explain to me how mystr[:3:-1] = 'gnirt'?
A slice [i:j:k] includes the first index (i) but *not* the last index (j). Since you're stepping backwards, the slice will start at the end of the string (i=len(mystr)-1=8) and stop when it reaches j=3. >>> mystr[8] 'g' >>> mystr[7] 'n' >>> mystr[6] 'i' >>> mystr[5] 'r' >>> mystr[4] 't' </F> -- http://mail.python.org/mailman/listinfo/python-list
