What is exception handling in Python programming language : Exception handling is a mechanism in Python that allows developers to handle and manage unexpected or exceptional events that occur during the execution of a program. It involves detecting and responding to errors or exceptions in a controlled manner, preventing program crashes and enabling error recovery or alternative actions.

Try-except blocks in Python programming language : Try-except blocks are used in Python to handle exceptions gracefully. The code within the try block is executed, and if an exception occurs, it is caught by the corresponding except block. This allows developers to handle specific exceptions or provide a generic exception handler to gracefully handle errors and prevent program termination.

Finally block in Python programming language : The finally block in Python is used to execute a set of statements regardless of whether an exception was raised or not. It ensures that certain code is always executed, regardless of whether an exception occurs or not. Finally blocks are commonly used to perform cleanup operations or release resources, ensuring the proper termination of a program.

Try..except..else construct in Python : The try-except-else construct in Python allows developers to specify additional code to be executed if no exceptions occur within the try block. If an exception is raised, the code within the except block is executed. However, if no exception occurs, the code within the else block is executed, allowing for different actions based on the outcome.

Raising exceptions in Python programming language : In Python, developers can raise exceptions explicitly using the raise statement. Raising an exception allows programmers to indicate exceptional conditions or errors and interrupt the normal flow of the program. It provides a way to handle custom or specific errors and enables better control over the execution of a program.

Built-in exceptions in Python programming language : Python provides a set of built-in exceptions that are predefined and raised by the interpreter or standard library modules. These exceptions cover a wide range of error scenarios, such as ValueError, TypeError, IndexError, and more. Understanding and utilizing these built-in exceptions helps in handling common error situations effectively.

User defined exceptions in Python programming language : Python allows developers to create their own custom exceptions, known as user-defined exceptions. By creating specific exception classes, developers can handle application-specific errors or exceptional conditions that are not covered by built-in exceptions. User-defined exceptions enhance code clarity, maintainability, and allow for specialized error handling in Python programs.