Possible to call single-parameter Python function without using parentheses?

Question

The Python documentation specifies that is is legal to omit the parentheses if a function only takes a single parameter, but

    myfunction \"Hello!\"
         


        

Answer 1

Without parentheses those wouldn't be functions but statements or keywords (language-intrinsic).

This StackOverflow thread (with some very nice answers) contains a lead as to how one can create their own in pure Python (through advanced hackery, and not a good idea in 99.99% of the cases).