⛔🔄 Python Break & Continue — Controlling Loop Flow

Introduction 🌟

break and continue are loop control statements that help you manage how loops execute. They give you more control by allowing you to **stop** the loop early or **skip** certain iterations.

Note

💡 These statements can be used inside both for and while loops.

1. The break Statement 🛑

break immediately stops the loop and moves control to the first statement after the loop.

break_basic.py

for i in range(1, 10):
    if i == 5:
        break
    print(i)

✔️ The loop stops when i == 5.
✔️ Values printed: 1, 2, 3, 4.

Break in While Loop

break_while.py

i = 1

while i <= 10:
    if i == 7:
        break
    print(i)
    i += 1

2. The continue Statement 🔄

continue skips the current loop iteration and moves to the next cycle.

continue_basic.py

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

✔️ When i == 3, printing is skipped.

Continue in While Loop

continue_while.py

i = 0

while i < 5:
    i += 1
    if i == 4:
        continue
    print(i)

3. Break & Continue in Nested Loops 🪜

Break only stops the INNER loop

nested_break.py

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

Note

✔️ Break affects only the loop in which it is written, not the outer loop.

Continue only skips the inner loop iteration

nested_continue.py

for i in range(3):
    for j in range(3):
        if j == 1:
            continue
        print(i, j)

4. Using Break in Search Operations 🔍

search_break.py

nums = [10, 20, 30, 40, 50]

search = 30

for n in nums:
    if n == search:
        print("Found:", n)
        break

5. Using Continue for Filtering 🎯

filter_continue.py

for i in range(1, 10):
    if i % 2 == 0:
        continue
    print(i)

✔️ Prints only odd numbers.

6. Real-World Examples 🌍

ATM PIN System

atm_pin.py

attempts = 0

while attempts < 3:
    pin = input("Enter PIN: ")
    if pin == "1234":
        print("Login successful!")
        break
    else:
        print("Wrong PIN")
        attempts += 1
else:
    print("Account locked!")

Skipping Invalid Data

skip_invalid.py

data = ["10", "20", "abc", "30"]

for item in data:
    if not item.isdigit():
        continue
    print(int(item))

Note

✔️ Invalid numeric strings like "abc" are skipped.

7. Important Rules ⚠️

  • break exits the loop completely.
  • continue skips current iteration and moves to next.
  • Both work only inside loops (for/while).
  • break inside nested loops affects only the inner loop.

Conclusion 🎉

>>“Break gives you control to stop. Continue gives you the power to skip. Together they control your loop’s rhythm.” ✨

You now fully understand break and continue in Python! Want the next topic? Try Pass Statement, Range(), List Comprehensions, or Functions. Just tell me! 😊