Parag Dhawan

SQL Interview Question and Answers | SQL | Structured Query Language

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Python User Defined Exception | Custom Exception

5. How to raise exceptions on a given condition.

The try statement has another optional clause which is intended to define clean-up actions that must be executed under all circumstances. -Releasing resources. The code under finally block executes in all circumstances. - If a finally clause is present, the finally clause will execute as the last task before the try statement completes. - The finally block will be executed no matter if the try block raises an error or not. - If the try statement reaches a break, continue or return statement, the finally clause will execute just prior to the break, continue or return statement’s execution. - If a finally clause includes a return statement, the returned value will be the one from the finally clause’s return statement, not the value from the try clause’s return statement.

Python try Except Else - try block - it contains code that might throw an exception. - except block - it contains error handling code which is to be executed if exceptions are not raised. - else block- it is an optional block, it will run if an exception is not raised in try block, allows to add additional code if exceptions are not raised.

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