Loop else

Learn for/else and while/else structure.

Loop with else

Python loops can have an else. This block runs when the loop ends without break:

for n in [1, 2, 3]:
    if n == 5:
        break
else:
    print("5 not found")

When the loop ends without break, else runs; if break exits, else is skipped. This is handy in search loops to say 'not found'.

else is most used in search loops. If the target is found, break exits and else does not run. If not found, the loop ends and else says 'not found':

for n in [2, 4, 6]:
    if n == 5:
        print("Found")
        break
else:
    print("5 not in list")

This puts the 'found/not found' logic in one loop.

Write for n in [1, 2, 3]: print(n). Add else: print("Done") after the loop.

Show example solution

for n in [1, 2, 3]:
    print(n)
else:
    print("Done")

Complete the loop else

for n in [1, 2, 3]:
    print(n)
____:
    print("Done")

Show answer

for n in [1, 2, 3]:
    print(n)
else:
    print("Done")