Lesson · 10 min

Lists

Many values in one name

A list keeps values in order. You write it with square brackets and commas.

colors = ["red", "green", "blue"]
scores = [10, 7, 9]

A list can hold any kind of value.

Each item has a position, called an index. The first index is 0. Python also counts from the end with negative numbers: -1 is the last item.

print(colors[0])     # red
print(colors[2])     # blue
print(colors[-1])    # blue
print(len(colors))   # 3

Code	What it does
`colors.append("pink")`	adds an item to the end
`colors.pop()`	removes the last item and gives it to you
`colors.remove("red")`	removes the first item that matches
`colors.sort()`	puts the items in order
`"red" in colors`	is `True` when the item is in the list
`", ".join(colors)`	joins text items into one text

Unlike a string, a list can change. A method such as append changes the list that you already have.

A for loop gives you each item, one after the other.

for color in colors:
    print(color)

A slice takes a part of a list. colors[0:2] takes the items at positions 0 and 1. The end position is not included.

The list fruits is already in the editor. Write your code under it. Some tasks depend on the tasks before them.

6 to do

Task 1, not checked yet. Make a variable second that holds the second item of fruits.
Task 2, not checked yet. Add the text 'date' to the end of fruits. Use the append method.
Task 3, not checked yet. Make a variable count that holds the number of items in fruits, and a variable last that holds the last item. Write them after the append line.
Task 4, not checked yet. Use a for loop to print each fruit in capital letters, one on each line.
Task 5, not checked yet. Make a variable text that joins the items of fruits into one text, with ' and ' between the items. Use the join method of the separator.
Task 6, not checked yet. Make a variable has_cherry that is True when 'cherry' is in fruits. Use the in operator.

Task 1 of 6

Make a variable second that holds the second item of fruits.