insert() missing 2 required positional arguments: 'parent' and 'index'

`insert()` is a method used to insert an element into a list at a specific position. It requires two positional arguments: 'parent' and 'index'.

The 'parent' argument represents the list in which you want to insert the element, and the 'index' argument represents the position at which you want to insert the element.

Here's an example of how to use the `insert()` method:

my_list = [1, 2, 3, 4]
my_list.insert(2, 5)
print(my_list)

In this example, we are inserting the value 5 at index 2 of the list `my_list`. The output will be `[1, 2, 5, 3, 4]`.