Control flow · Lesson 10 of 25

Loop control and nesting

Stop a search, skip an item and nest loops.

8 minutes2 games

break exits the nearest loop; continue skips the rest of the current iteration. A nested loop runs for each outer iteration, so track which variable changes and when.

Python

for n in range(1, 8):
    if n == 3:
        continue
    if n == 5:
        break
    print(n)

for row in range(2):
    for col in range(2):
        print(row, col)

Start iteration

continue: next iteration

break: leave loop

What's the output?

for n in range(4):
    if n == 2:
        break
    print(n)

What will this code print?

Exercise

Print the first number above 10 and stop searching.

Expected output: 12

Python

numbers = [4, 12, 20]

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Python

Control flow · Lesson 10 of 25

Loop control and nesting

Stop a search, skip an item and nest loops.

8 minutes2 games

break exits the nearest loop; continue skips the rest of the current iteration. A nested loop runs for each outer iteration, so track which variable changes and when.

Python

for n in range(1, 8):
    if n == 3:
        continue
    if n == 5:
        break
    print(n)

for row in range(2):
    for col in range(2):
        print(row, col)

Start iteration

continue: next iteration

break: leave loop

What's the output?

for n in range(4):
    if n == 2:
        break
    print(n)

What will this code print?

Exercise

Print the first number above 10 and stop searching.

Expected output: 12

Python

numbers = [4, 12, 20]

Learn more from

Played 0 of 2 games