What happens if no case matches in a match-case statement?

If no case matches in a match-case statement, the default case (often represented by the wildcard pattern _) is executed if it is present. If there is no default case, nothing happens, and the program continues execution after the match statement.

command = "pause"

match command:
    case "start":
        print("Starting...")
    case "stop":
        print("Stopping...")
    case _:
        print("Unknown command")  # This line is executed because "pause" does not match any other case

This behavior allows you to provide fallback logic in your programs, ensuring that your code can handle unexpected or unsupported inputs gracefully.

Without a default case, the match-case statement would simply skip over any unmatched cases, which could be appropriate in situations where unmatched inputs are intentionally ignored.