feature request: ternary fallthroughs

[buran]

first of all int(sys.argv[1]) if int(sys.argv[1] doesn't make sense at all. Also note that it will fail if sys.argv[1] is '0', because 0 is False

And I disagree with

It's almost like a try block but I feel like it reads better...

EAFP: “it’s easier to ask for forgiveness than permission vs LYBL, Look before you leap
see
https://devblogs.microsoft.com/python/id...rsus-lbyl/

A fallthrough statement transfers control to the next case.

Still unclear what the next case is... If sys.argv[1] cannot be converted to int (and raise an exception) or even if it doesn't raise an exception there is no other case that I see.

Finally - I understand that your example is more general, but just to mention that using sys.argv is the most primitive CLI arguument handling. There is argparse or even third party packages like click that make handling, parsing and validation of CLI arguments easy.