run the original version of this example has now been largely superseded by the standard library' webbrowser modulewhich arose after this example had been developed (reptilian minds think alike!in this editionlaunchbrowser simply parses command-line arguments for backward compatibility and invokes the open function in webbrowser see this module' help textor pygadgets and pydemos in for example command-line usage that' the end of our system tools exploration in the next part of this book we leave the realm of the system shell and move on to explore ways to add graphical user interfaces to our program laterwe'll do the same using web-based approaches as we continuekeep in mind that the system tools we've studied in this part of the book see action in wide variety of programs for instancewe'll put threads to work to spawn long-running tasks in the gui partuse both threads and processes when exploring server implementations in the internet partand use files and file-related system calls throughout the remainder of the book whether your interfaces are command linesmultiwindow guisor distributed clientserver websitespython' system interfaces toolbox is sure to play important part in your python programming future complete system programs