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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_page_elements(self):
 """Return page elements and page objects of this page object :returns: list of page elements and page objects """

        page_elements = []
        for attribute, value in list(self.__dict__.items()) + list(self.__class__.__dict__.items()):
            if attribute != 'parent' and isinstance(value, CommonObject):
                page_elements.append(value)
        return page_elements