(self)
return bool(self.__scope == FREE)
Return *True* if a referenced symbol is
        not assigned to.
Return *True* if a referenced symbol is
        not assigned to.
Return * True * if a referenced symbol is not assigned to .
def is_free(self):
        """Return *True* if a referenced symbol is
        not assigned to.
        """
        return bool(self.__scope == FREE)
def is_free ( self ) : return bool ( self . __scope == FREE )