A list keeps many things in numbered boxes, and the first box is zero.
A list keeps many things under one name, in a row of numbered boxes, inside square brackets.
Python starts counting its boxes at zero, not one. The first box is box zero, no steps from the start.
Len counts the boxes. The count is one more than the last box number.
Append adds one thing at the end, and a for loop can visit every box in turn.
These are some of the questions on the sets. The printable sheets have more and an answer key.
plum. Counting from zero: mango is box 0, pear is box 1, plum is box 2.
4. The boxes are 0, 1, 2, 3 and 4.
7. Len counts the boxes.
Box four. Append adds at the end, and the boxes were 0 to 3.
snacks[1]. The pear is in box one.
With a grown-up, write four things, such as snacks, on four paper boxes, and number the boxes from zero. Ask them to say a number, and you hold up that box. Then add a fifth box at the end, just like append.
Do the Mission: write four things on four paper boxes, number them from zero, and ask your child to hold up the box you name. Then add a fifth box at the end, like append.
