In the training session, we tried printing a string containing a single '"' in it from the shell. The following should have worked

printjson(" \" ")

The shell didn't understand that that string was properly terminated, and we had to cudgel it into submission in order to even get the shell to take the command

> printjson(" \" ")
... "
... )
Wed Feb 13 13:36:50 SyntaxError: unterminated string literal (shell):2