Python 3: Handling Errors 🎁 Deluxe

: Runs only if the code in the try block executed without any exceptions. Use this for code that should only run if the "risky" part succeeded.

: For domain-specific logic, you can define your own error classes by inheriting from the built-in Exception class.

: Avoid using a bare except: or except Exception: . Catching specific errors (e.g., FileNotFoundError ) prevents you from accidentally silencing unexpected bugs you didn't intend to handle. Python 3: Handling errors

: Contains the code that executes if a specific error occurs.

The fundamental structure for handling errors is the try...except block. : Encloses "risky" code that might fail. : Runs only if the code in the

: Pythonic code often follows "Easier to Ask Forgiveness than Permission" (EAFP)—trying an operation and handling the failure rather than checking if it's possible beforehand. Common Built-in Exceptions

: Always runs regardless of whether an error occurred. This is essential for resource cleanup , such as closing files or database connections. Strategic Techniques : Avoid using a bare except: or except Exception:

try: number = int(input("Enter a number: ")) result = 10 / number except ValueError: print("Error: Please enter a valid integer.") except ZeroDivisionError: print("Error: Cannot divide by zero.") Use code with caution. Copied to clipboard Expanding Control: else and finally