There is an issue open on the vscode-python repo about non functioning f-strings. The OP posted the issue when using Python 3.6 and it's still open. I'm having similar problems running code that has ...

How can you change a word to uppercase? Ask Python for help on what you can do with strings! Turn that into a function, print_upper_words. Test it out. (Don’t forget to add a docstring to your ...