Exception handling lets you manage errors during program execution. Instead of crashing, your code can respond to unexpected issues gracefully and keep running.
The try-except Block
Use try to run code that might fail. If an error occurs, except lets you handle it. This prevents your program from crashing unexpectedly.
Catching Specific Exceptions
You can catch specific errors, like ZeroDivisionError or FileNotFoundError, to handle different problems with custom messages or actions.
Multiple Except Blocks
Handle different exceptions separately by stacking multiple except blocks. Python runs the first matching block for the error that occurs.
Else and Finally Blocks
else runs if no exception occurs. finally always runs, whether there’s an error or not—great for cleanup like closing files or releasing resources.
Raising Exceptions
Use raise to trigger your own exceptions when something goes wrong, making your code more robust and easier to debug.
Best Practices
Catch specific exceptions, avoid bare except, and always clean up resources. Good exception handling makes your code safer and easier to maintain.