"""
extend_each
"""


#  Copyright (c) 2021. Pascal Syma. All rights reserved.

def extend_each(my_item, my_list):
    """
    Add _my_item_ to each row of _my_list_. Changing the original.
    :param my_item: Item to add
    :param my_list: Nested list
    """
    for row in my_list:
        row.append(my_item)


if __name__ == '__main__':
    old_list = [['kangar'], ['z'], ['f']]
    print(f'{old_list = }')
    print(f'{extend_each("oo", old_list) = }')
    print(f'{old_list = }')