Question

If I have a string, I can split it up around whitespace with the str.split method:

"hello world!".split()

returns

['hello', 'world!']

If I have a list like

['hey', 1, None, 2.0, 'string', 'another string', None, 3.0]

Is there a split method that will split around None and give me

[['hey', 1], [2.0, 'string', 'another string'], [3.0]]

If there is no built-in method, what would be the most Pythonic/elegant way to do it?

Answer 1

A concise solution can be produced using itertools:

groups = []
for k,g in itertools.groupby(input_list, lambda x: x is not None):
    if k:
        groups.append(list(g))