[Tutor] list objects are unhashable

[Kent Johnson]

On Tue, Jul 1, 2008 at 3:09 AM, Norman Khine <norman at khine.net> wrote:

>            x = getattr(brain, horizontal)
>            if isinstance(x, list):
>                for item in x:
>                    x = item

This just assigns x to the last element of the list, it doesn't
process the whole list. One possibility would be to ensure that x and
y are always lists, then use nested loops to iterate over all
combinations:
x = getattr(brain, horizontal)
if not isinstance(x, list):
  x = [x]
y = getattr(brain, vertical)
if not isinstance(y, list):
  y = [y]
for first in x:
  for second in y:
    if first and second and (first, second) in table:

etc.

Kent