Most Pythonic Way to Split an Array by Repeating Elements

Question

I have a list of items that I want to split based on a delimiter. I want all delimiters to be removed and the list to be split when a delimiter occurs twice. F

Answer 1

Here's another way of doing this:

def split_multi_delimiter(items, delimiter, num_wanted):
    def remove_delimiter(objs):
        return [obj for obj in objs if obj != delimiter]

    ranges = [(index, index+num_wanted) for index in xrange(len(items))
              if items[index:index+num_wanted] == [delimiter] * num_wanted]

    last_end = 0
    for range_start, range_end in ranges:
        yield remove_delimiter(items[last_end:range_start])
        last_end = range_end

    yield remove_delimiter(items[last_end:])

items = ['a', 'b', 'X', 'X', 'c', 'd', 'X', 'X', 'f', 'X', 'g']
print list(split_multi_delimiter(items, "X", 2))