Loop else

Definition

A 'loop else' in Python is a block of code that executes after the loop completes normally, meaning no 'break' statement was encountered. It provides an additional condition to execute code if the loop did not end early.

5 Must Know Facts For Your Next Test

1. The 'else' block associated with a loop executes only when the loop terminates without encountering a 'break' statement.
2. Both 'for' and 'while' loops can have an accompanying 'else' block.
3. 'Loop else' is commonly used for searching scenarios to verify if an item was found or not.
4. If a 'break' statement is executed inside the loop, the control does not go to the 'else' block.
5. The syntax for using 'loop else': \nfor/while <condition>:\n <loop body>\nelse:\n <else body>

Review Questions

• When does the code in a loop's ‘else’ block execute?
• What will happen if a ‘break’ statement is encountered within a loop containing an ‘else’ block?
• Can both ‘for’ and ‘while’ loops use an ‘else’ block in Python?

Related terms

For Loop: A control flow statement for specifying iteration, which allows code to be executed repeatedly.

While Loop: A control flow statement that allows code to be executed repeatedly based on a given Boolean condition.

'Break' Statement: 'Break' is used to exit from a loop before it has finished all its iterations.