Pymoult : On-Line Updates for Python Programs

International audience; On-line updates have proved to be essential for critical long running applications that hardly can be stopped. Indeed, security patches or feature enhancements need to be applied frequently. Pymoult is a platform allowing on-line updates for Python programs. It provides many mechanisms from the literature for updating running programs without requiring them to be stopped, allowing update developers to combine and configure the mechanisms for each update. This paper presents the design of Pymoult and details the implementation of several mechanisms it provides. With the help of an example, this paper also presents how mechanisms can be combined and configured to design on-line updates with Pymoult