How Do I Handle Exceptions In Python?

In Python, you can handle exceptions (runtime errors) using a try-except block. The try block contains the code that might raise an exception, and the except block contains the code to handle the exception if it occurs.

Here’s a basic syntax for using a try-except block:

In this syntax, ExceptionType is the type of exception you want to catch. For example, if you want to catch a ZeroDivisionError exception that can occur when dividing by zero, you would write:

If the code inside the try block raises a ZeroDivisionError exception, the code inside the except block is executed, and the program continues running without terminating.

You can catch multiple exceptions in the same try-except block by listing them in a tuple:

You can also use a generic except block to catch any type of exception:

However, this is generally not recommended, as it can catch unexpected exceptions and make it harder to diagnose errors.

In addition to the try-except block, you can use a finally block to execute code regardless of whether an exception was raised or not. The finally block is always executed, even if there is a return statement in the try or except block. Here’s an example:

The finally block can be useful for releasing resources (such as file handles or network connections) or cleaning up after an operation, regardless of whether it succeeded or failed.