[Tutor] Language truce

[D-Man]

On Thu, Jun 28, 2001 at 02:20:58PM -0700, Danny Yoo wrote:
| One reason that 'for/in' might be preferred is because we are guaranteed
| that the loop will always terminate: there can only be a finite number of
| elements in a list.  That's one big advantage of a loop construct that
| goes along elements --- theoretically, we'll never get into infinite
| loops.

Almost.

l = range( 1 )
for i in l :
    print l
    l.append( i+1 )

Don't do this!  It's just as bad in C or any other language --
mutating a collection while iterating over it is just a bad idea.

-D