Hi, See: http://docs.python.org/tutorial/ https://realpython.com/ HTH, Ian -- -- ACCU - Professionalism in programming - http://www.accu.org -- My writing - https://sites.google.com/site/ianbruntlett/ -- Free Software page - https://github.com/ian-bruntlett/TECH-Manuals/blob/main/tm-free-software.md