Using Python for development of an application for building and experimenting with GPSS simulation models

The present paper aims to propose an open source application with graphical user interface for simulating models, created by General Purpose Simulation System (GPSS). The application is similar to the well-known discrete event simulator GPSS. The application has the following functionalities: Open a GPSS file, Enter or edit the model directly in the GPSS model editor window, experimenting with the entered GPSS model and displaying the results on the screen.