How to use the pympress.document.Page function in pympress

Args:
            filename (`str`): The path to the file to delete
        """
        self.temp_files.add(filename)


    def cleanup_media_files(self):
        """ Removes all files that were extracted from the pdf into the filesystem.
        """
        for f in self.temp_files:
            os.remove(f)
        self.temp_files.clear()


class EmptyPage(Page):
    """ A dummy page, placeholder for when there are no valid pages around.

    This page is a non-notes page with an aspect ratio of 1.3 and nothing else inside.
    Also, it has no "rendering" capability, and is made harmless by overriding its render function.
    """

    def __init__(self):
        self.page = None
        self.page_nb = -1
        self.parent = None
        self.page_label = None
        self.links = []
        self.medias = []
        self.annotations = []

        # by default, anything that will have a 1.3 asapect ratio

def page(self, number):
        """ Get the specified page.

        Args:
            number (`int`):  number of the page to return

        Returns:
            :class:`~pympress.document.Page`: the wanted page, or `None` if it does not exist
        """
        if number >= self.nb_pages or number < 0:
            return None

        if number not in self.pages_cache:
            self.pages_cache[number] = Page(self.doc.get_page(number), number, self)
        return self.pages_cache[number]