Lists can be changed with several methods. What are these methods?

To add items to a list, you can use the append() method. Call the method on the list, the parameter contains the item to add. Calling append(3) would add 3 to the list. To remove an item from the end of the list, you can use the pop() method.

Lists can be accessed like traditional arrays, use the block quotes and index to get an item.

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Example

Lists can be modified using their methods.
In the example below we create a list and use methods to change the list contents.

Append and pop

Type the program shown below and run it:

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x = [3,4,5]
x.append(6)
print(x)
x.append(7)
print(x)
x.pop()
print(x)

Access items

To access items, simply use the block quotes:

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x = [3,4,5]

print(x[0])
print(x[1])

print(x[-1])

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Exercise

Try the exercises below

  1. Given the list y = [6,4,2] add the items 12, 8 and 4.
  2. Change the 2nd item of the list to 3.

After completing these continue with the next exercise.