try-except block to prevent program crashes and handle errors gracefully. The try block contains code that may raise an exception, while the except block catches and handles specific errors. Multiple exceptions can be handled separately using multiple except blocks or grouped together in a single except block using a tuple. Additionally, the else block executes if no exceptions occur, ensuring normal program flow. The finally block, which always runs regardless of whether an exception was raised or not, is useful for cleanup tasks like closing files or releasing resources. This structured approach to error handling improves code reliability and ensures that unexpected issues do not crash the program.