The shell has many uses. It is started by entering python3 myshell.py It is capable of • Processing the internal commands (1-8 inclusive), • Taking command line input from a batchfile* (9), • ...

While the Zen of Python stipulates that There should be one-- and preferably only one --obvious way to do it, it is difficult for beginners/non-developers to come up with an obvious way to create that ...