On 25/02/2021 17:22, Botao Liu wrote: > Type "help", "copyright", "credits" or "license" for more information."
Follow the instructions and type "help" at the >>> prompt. Then follow the instructions which it displays. -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ http://www.amazon.com/author/alan_gauld Follow my photo-blog on Flickr at: http://www.flickr.com/photos/alangauldphotos -- https://mail.python.org/mailman/listinfo/python-list