Introduction
Error handling is a critical aspect of robust software development. Python provides a straightforward and flexible approach to handle errors using try
, except
, and finally
blocks. This blog post will guide you through these constructs, helping you write more resilient code.
The try
Block
The try
block allows you to test a block of code for errors. If an error occurs, it is intercepted, and the flow of control is transferred to the corresponding except
block.
Output:
Multiple except
Blocks
You can handle different exceptions separately using multiple except
blocks:
Output:
The finally
Block
The finally
block is optional and will always execute, regardless of whether an error occurred or not. It is commonly used for cleanup actions, such as closing files or releasing resources.
Output:
The else
Block
An else
block can be added after the except
block(s). It runs if no exceptions are raised in the try
block:
Output:
Raising Exceptions
You can raise exceptions manually using the raise
keyword:
Output: