Loop else Clauses

Concepts: pyLoopElse

The for-else Pattern The else block runs only if the loop completed without breaking: The while-else Pattern The else clause works identically with while loops: Practical Use Cases Loop-else is ideal for search patterns where you need to know if the search succeeded: The prime number check is a classic example. The loop searches for a divisor. If it finds one, it breaks. If the loop finishes without breaking, the else clause confirms the number is prime: Mastering loop patterns helps you write more efficient and expressive code. Put these techniques to the test with hands-on challenges in the Python Builder.