[Tutor] Flow control question.

[A.M. Kuchling]

On Mon, Aug 11, 2003 at 11:19:26AM -0400, Clay Shirky wrote:
> for new_address in new_addresses:
>     if new_address == 0: continue # I want to skip the next test
>     if test_mac(new_address) == test_mac(orig_address):
>         print new_address, "matches", orig_address
>     else:
>         print new_address, "doesn't match..."

I'm a bit confused; is some code not included in your post that sets
elements of the new_addresses list to 0?  It looks to me like
new_address is some string 'aa:bb:cc:...' and you want to continue if
test_mac() returns 0, so the loop would be:

for new_address in new_addresses:
    result = test_mac(new_address)
    if new_address == 0: 
         continue # I want to skip the next test
    if result == test_mac(orig_address):
        print new_address, "matches", orig_address
    else:
        print new_address, "doesn't match..."

If your original code is what you want, then perhaps the problem is
that new_address is being set to the string '0'; '0' looks just
like the number 0 if you print it, but won't compare as equal.  Try printing
repr(new_address), or type(new_address), to check this.

--amk                                            (www.amk.ca)
RICHARD: Deep malice makes too deep incision.
      -- _Richard II_, I, i