How to split a list into sublists based on a separator, similar to str.split()?

Question

Given a list like:

[a, SEP, b, c, SEP, SEP, d]

how do I split it into a list of sublists:

[[a], [b, c], [], [d]]

Effectively I need an equivalent of str.split() for lists. I can hack together something, but I can't seem to be able to come up with anything neat and/or pythonic.

I get the input from an iterator, so a generator working on that is acceptable as well.

More examples:

[a, SEP, SEP, SEP] -> [[a], [], [], []]

[a, b, c] -> [[a, b, c]]

[SEP] -> [[], []]

Answer 1

A simple generator will work for all of the cases in your question:

def split(sequence, sep):
    chunk = []
    for val in sequence:
        if val == sep:
            yield chunk
            chunk = []
        else:
            chunk.append(val)
    yield chunk

Answer 2

My first ever Python program :)

from pprint import pprint
my_array = ["a", "SEP", "SEP", "SEP"]
my_temp = []
my_final = []
for item in my_array:
  if item != "SEP":
    my_temp.append(item)
  else:
    my_final.append(my_temp);
    my_temp = []
pprint(my_final);