Tips for Effective Use of Custom Exceptions
When defining and using custom exceptions, consider the following tips to ensure they are effective and maintainable:
- Naming: Use clear and descriptive names that end with Error to indicate that they are exceptions.
- Documentation: Provide docstrings for your custom exceptions to explain when they should be used.
- Hierarchy: Create a hierarchy of exceptions if your application requires handling different types of errors differently python
Define Custom Exceptions in Python
In Python, exceptions occur during the execution of a program that disrupts the normal flow of the program’s instructions. When an error occurs, Python raises an exception, which can be caught and handled using try
and except
blocks. Here’s a simple example of handling a built-in exception:
try:
result = 10 / 0
except ZeroDivisionError:
print("You cannot divide by zero!")
In this example, ZeroDivisionError
is a built-in exception that gets raised when you attempt to divide by zero.