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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 find(self, filter=None, page=1, per_page=10, fields=None, context=None):
 """ Find records that match the filter. Pro Tip: The fields could have nested fields names if the field is a relationship type. For example if you were looking up an order and also want to get the shipping address country then fields would be: `['shipment_address', 'shipment_address.country']` but country in this case is the ID of the country which is not very useful if you don't already have a map. You can fetch the country code by adding `'shipment_address.country.code'` to the fields. :param filter: A domain expression (Refer docs for domain syntax) :param page: The page to fetch to get paginated results :param per_page: The number of records to fetch per page :param fields: A list of field names to fetch. :param context: Any overrides to the context. """

        if filter is None:
            filter = []
        rv = self.client.session.get(
            self.path,
            params={
                'filter': dumps(filter or []),
                'page': page,
                'per_page': per_page,
                'field': fields,
                'context': dumps(context or self.client.context),
            }
        )
        response_received.send(rv)
        return rv