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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 add(self, attachments):
 """ Add more attachments :param attachments: list of attachments :type attachments: list[str] or list[Path] or str or Path or dict """

        if attachments:
            if isinstance(attachments, (str, Path)):
                attachments = [attachments]
            if isinstance(attachments, (list, tuple, set)):
                # User provided attachments
                attachments_temp = [
                    self._attachment_constructor(attachment, parent=self)
                    for attachment in attachments]
            elif isinstance(attachments,
                            dict) and self._cloud_data_key in attachments:
                # Cloud downloaded attachments. We pass on_cloud=True
                # to track if this attachment is saved on the server
                attachments_temp = [self._attachment_constructor(
                    {self._cloud_data_key: attachment}, parent=self,
                    on_cloud=True)
                    for attachment in
                    attachments.get(self._cloud_data_key, [])]
            else:
                raise ValueError('Attachments must be a str or Path or a '
                                 'list, tuple or set of the former')

            self.__attachments.extend(attachments_temp)
            self._update_parent_attachments()
            self._track_changes()