Python · Theory

break in Python

Theory

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break in Python

break leaves the nearest loop immediately. No more rounds. Search: for n in nums: if n == target: print("found"); break. After you find it, don’t keep scanning. Nested loops: break only exits the inner one — the outer for still continues.

Trace: for i in range(1, 6): if i == 3: break; print(i) → 1 then 2. 3 is not printed. 4 and 5 never run. Say that output before you run.

break in Python — output — 1 then 2. When i is 3, break — 4 and 5 never print.

Exam tip

Trace break with a tiny for-loop.

Example

# break
for i in range(1, 6):
    if i == 3:
        break
    print(i)

break in Python — output: 1 then 2. When i is 3, break — 4 and 5 never print.

Short notes

DefExit nearest loop now.
RuleEarly stop when found.
TrapNested — only inner loop exits.

Python · Theory

break in Python

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Theory

25/268

break in Python

Trace: for i in range(1, 6): if i == 3: break; print(i) → 1 then 2. 3 is not printed. 4 and 5 never run. Say that output before you run.

break in Python — output — 1 then 2. When i is 3, break — 4 and 5 never print.

Exam tip

Trace break with a tiny for-loop.

Example

# break
for i in range(1, 6):
    if i == 3:
        break
    print(i)

break in Python — output: 1 then 2. When i is 3, break — 4 and 5 never print.

Short notes

DefExit nearest loop now.
RuleEarly stop when found.
TrapNested — only inner loop exits.

break in Python

Example

Short notes

Questions

break in Python

Example

Short notes

Questions