Error Handling in Python

Proper error handling makes your code robust.

try:
    result = 10 / 0
except ZeroDivisionError as e:
    print(f"Error: {e}")
except Exception as e:
    print(f"Unexpected error: {e}")
else:
    print("No errors occurred")
finally:
    print("Cleanup code")

# Custom exceptions
class ValidationError(Exception):
    pass

def validate_age(age):
    if age < 0:
        raise ValidationError("Age cannot be negative")