Built in exceptions in Python
Python is a popular programming language known for its simplicity and flexibility. One of the features that makes Python a great language to work with is its support for built-in exceptions, which are errors that can occur during the execution of a program and which are handled by the Python runtime.
Built-in exceptions in Python are organized into a hierarchy of classes, with the base class being Exception. This class provides a common base for all built-in exceptions, and defines a set of common methods and attributes that are shared by all exceptions.
In addition to the Exception class, Python also defines a number of more specific exception classes that are derived from the Exception class. For example, the ZeroDivisionError class is used to indicate that a division or modulo operation has been attempted with a divisor of zero, and the TypeError class is used to indicate that an operation or function has been called on an object of an inappropriate type.
To handle built-in exceptions in Python, a developer can use a try-except block, which allows them to specify a block of code that may raise an exception and a block of code that should be executed if an exception occurs. For example, the following code uses a try-except block to handle a ZeroDivisionError exception:
try:
result = 1 / 0
except ZeroDivisionError:
print("Cannot divide by zero")
In this code, the try block contains the code that may raise the exception (the division operation), and the except block contains the code that should be executed if the exception occurs (the print statement).
Built-in exceptions in Python provide a convenient and flexible way to handle errors in a program. By using try-except blocks and the hierarchy of built-in exception classes, Python developers can write code that is robust, reliable, and easy to maintain.