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

You can use recursion with a generator:

def remove(d, sub_list):
   if d[:len(sub_list)] == sub_list and len(sub_list) <= len(d[:len(sub_list)]):
      yield from [[], remove(d[len(sub_list):], sub_list)][bool(d[len(sub_list):])]
   else:
      yield d[0]
      yield from [[], remove(d[1:], sub_list)][bool(d[1:])]

tests = [[[2, 1, 2, 3, 1, 2, 4], [1, 2]], [[1, 2, 1, 2], [1, 2]], [[1, 'a', int, 3, float, 'a', int, 5], ['a', int]], [[1, 1, 1, 1, 1], [1,1,1]]]
for a, b in tests:
  print(list(remove(a, b)))

Output:

[2, 3, 4]
[]
[1, 3, , 5]
[1, 1]