The error mentioned in the title is this.

...

...

*()

File "<stdin>", line 1 SyntaxError: can't use starred expression here

According to the Language Reference

https://docs.python.org/3/reference/expressions.html#expression-lists

it's not really a starred expression. In the context of defining the notion of starred expressiont, it looks like it's called a starred item. I think the message is confusing and should be fixed. I don't know if "starred item" is the right name to be used there, but it's at least documented (in the Reference).

Best regards, Takuo