This isn't list comprehension, but it's something to keep in mind: b = filter(lambda x: None not in x, input_list)
On Sat, May 2, 2009 at 10:25 PM, CTO <debat...@gmail.com> wrote: > On May 2, 10:13 pm, Ross <ross.j...@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)]. > > try this: > > b = [i for i in a if None not in i] > > > 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? > > You've got a "for" and an "if" backwards. t isn't defined when the if > tries to evaluate it. > > > > -- > http://mail.python.org/mailman/listinfo/python-list >
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