leclecovich

list(filter(lambda url: not any('.' + format_file in url for format_file in format_files), sites_list))

from copy import copy


def process_list(target_list, value):
    try:
        first_index = target_list.index(value)
        try:
            second_index = target_list.index(value, first_index + 1)
            # Both indexes were found, cropping the 'middle' of the list
            return target_list[:first_index + 1] + target_list[second_index:]
        except ValueError:
            # Only the first index was found, cropping the 'begining' of the list
            return target_list[first_index:]
    except ValueError:
        # Nothing was found, returning the copy of original list
        return copy(target_list)