yet another list comprehension question

[Snorri H]

On May 3, 6:13 am, Ross <ross.j... at gmail.com> wrote:
> I'm trying to set up a simple filter using a list comprehension. If I
> have a list of tuples, a = [(1,2), (3,4), (5,None), (6,7), (8, None)]
> and I wanted to filter out all tuples containing None, I would like to
> get the new list b = [(1,2), (3,4),(6,7)].
>
> I tried b = [i for i in a if t for t in i is not None]   but I get the
> error that "t is not defined". What am I doing wrong?


Works as well:
filter(lambda x:not None in x, your_list)