### Given: - You have a list of lists. - You want to split each sublist at the point where the sublist starts with a given symbol. ### Example: #### Input: {{{#!python list_of_lists = [ ['a', 1, 2, 3], ['b', 4, 5, 6], ['*', 7, 8, 9], ['c', 10, 11], ['*', 12, 13], ['d', 14, 15, 16] ] symbol = '*' }}} #### Expected Output: {{{#!python [ [['a', 1, 2, 3], ['b', 4, 5, 6]], [['*', 7, 8, 9], ['c', 10, 11]], [['*', 12, 13], ['d', 14, 15, 16]] ] }}} ### Steps: 1. **Initialize an empty result list**: This will hold the final split sublists. 2. **Iterate through each sublist**: Check if the first element of the sublist is the given symbol. 3. **When the symbol is found**: Start a new group in the result list. 4. **Continue grouping until the symbol is encountered again**. ### Python Code Implementation: {{{#!python def split_list_of_lists(list_of_lists, symbol): result = [] current_group = [] for sublist in list_of_lists: if sublist[0] == symbol and current_group: result.append(current_group) current_group = [] current_group.append(sublist) if current_group: result.append(current_group) return result # Example usage list_of_lists = [ ['a', 1, 2, 3], ['b', 4, 5, 6], ['*', 7, 8, 9], ['c', 10, 11], ['*', 12, 13], ['d', 14, 15, 16] ] symbol = '*' output = split_list_of_lists(list_of_lists, symbol) print(output) }}} ### Output: {{{#!python [ [['a', 1, 2, 3], ['b', 4, 5, 6]], [['*', 7, 8, 9], ['c', 10, 11]], [['*', 12, 13], ['d', 14, 15, 16]] ] }}}