How to use the rope.base.pynames function in rope

def _is_local(pyname):
    module, lineno = pyname.get_definition_location()
    if lineno is None:
        return False
    scope = module.get_scope().get_inner_scope_for_line(lineno)
    if isinstance(pyname, pynames.DefinedName) and \
       scope.get_kind() in ('Function', 'Class'):
        scope = scope.parent
    return scope.get_kind() == 'Function' and \
        pyname in scope.get_names().values() and \
        isinstance(pyname, pynames.AssignedName)

def element_already_exists(self):
        if self.pyname is None or isinstance(self.pyname, pynames.UnboundName):
            return False
        return self.get_name() in self.goal_scope.get_defined_names()

def _get_pyname(pycore, resource, offset):
    pymodule = pycore.resource_to_pyobject(resource)
    pyname = evaluate.eval_location(pymodule, offset)
    if isinstance(pyname, pynames.ImportedName):
        pyname = pyname._get_imported_pyname()
    return pyname

def _follow_pyname(assignment, pymodule, lineno=None):
    assign_node = assignment.ast_node
    if lineno is None:
        lineno = _get_lineno_for_node(assign_node)
    holding_scope = pymodule.get_scope().get_inner_scope_for_line(lineno)
    pyname = evaluate.eval_node(holding_scope, assign_node)
    if pyname is not None:
        result = pyname.get_object()
        if isinstance(result.get_type(), rope.base.builtins.Property) and \
           holding_scope.get_kind() == 'Class':
            arg = rope.base.pynames.UnboundName(
                rope.base.pyobjects.PyObject(holding_scope.pyobject))
            return pyname, result.get_type().get_property_object(
                arguments.ObjectArguments([arg]))
        return pyname, result

def parameters(self):
        """The names of the parameters the function takes.

        Returns None if this completion is not a function.
        """
        pyname = self.pyname
        if isinstance(pyname, pynames.ImportedName):
            pyname = pyname._get_imported_pyname()
        if isinstance(pyname, pynames.DefinedName):
            pyobject = pyname.get_object()
            if isinstance(pyobject, pyobjects.AbstractFunction):
                return pyobject.get_param_names()

def _add_names(self, pymodule, modname, underlined):
        if underlined is None:
            underlined = self.underlined
        globals = []
        if isinstance(pymodule, pyobjects.PyDefinedObject):
            attributes = pymodule._get_structural_attributes()
        else:
            attributes = pymodule.get_attributes()
        for name, pyname in attributes.items():
            if not underlined and name.startswith('_'):
                continue
            if isinstance(pyname, (pynames.AssignedName, pynames.DefinedName)):
                globals.append(name)
            if isinstance(pymodule, builtins.BuiltinModule):
                globals.append(name)
        self.names[modname] = globals

def _is_local(pyname):
    module, lineno = pyname.get_definition_location()
    if lineno is None:
        return False
    scope = module.get_scope().get_inner_scope_for_line(lineno)
    if isinstance(pyname, pynames.DefinedName) and \
       scope.get_kind() in ('Function', 'Class'):
        scope = scope.parent
    return scope.get_kind() == 'Function' and \
           pyname in scope.get_names().values() and \
           isinstance(pyname, pynames.AssignedName)

def _is_local(pyname):
    module, lineno = pyname.get_definition_location()
    if lineno is None:
        return False
    scope = module.get_scope().get_inner_scope_for_line(lineno)
    if isinstance(pyname, pynames.DefinedName) and \
       scope.get_kind() in ('Function', 'Class'):
        scope = scope.parent
    return scope.get_kind() == 'Function' and \
           pyname in list(scope.get_names().values()) and \
           isinstance(pyname, pynames.AssignedName)

def _get_scope_and_pyname(self, pyname):
        if pyname is not None and isinstance(pyname, pynames.AssignedName):
            pymodule, lineno = pyname.get_definition_location()
            if pymodule is None:
                return None, None
            if lineno is None:
                lineno = 1
            scope = pymodule.get_scope().get_inner_scope_for_line(lineno)
            name = None
            while name is None and scope is not None:
                for current in scope.get_names():
                    if scope[current] is pyname:
                        name = current
                        break
                else:
                    scope = scope.parent
            return scope, name
        return None, None

def _get_scope(self, scope):
        if isinstance(self.pyname, builtins.BuiltinName):
            return 'builtin'
        if isinstance(self.pyname, pynames.ImportedModule) or \
           isinstance(self.pyname, pynames.ImportedName):
            return 'imported'
        return scope