How to remove every occurrence of sub-list from list

Question

I have two lists:

big_list = [2, 1, 2, 3, 1, 2, 4]
sub_list = [1, 2]

I want to remove all sub_list occurrences in big_list.

result

Answer 1

A recursive approach:

def remove(lst, sub):
    if not lst:
        return []
    if lst[:len(sub)] == sub:
        return remove(lst[len(sub):], sub)
    return lst[:1] + remove(lst[1:], sub)
print(remove(big_list, sub_list))

This outputs:

[2, 3, 4]