Intro to Python for Computer Science and Data Science: Learning to Program with AI, Big Data and The Cloud

9.9 finally Clause

Operating systems typically can prevent more than one program from manipulating a file at once. When a program finishes processing a file, the program should close it to release the resource. This enables other programs to use the file (if they’re allowed to access it). Closing the file helps prevent a resource leak in which the file resource is not available to other programs because a program using the file never closes it.

The finally Clause of the try Statement

A try statement may have a finally clause as its last clause after any except clauses or else clause. The finally clause is guaranteed to execute, regardless of whether its try suite executes successfully or an exception occurs.⁸ In other languages that have ...