Save a document or list of documents

def save(self, data):
        """Save a document or list of documents"""
        if not self.is_connected:
            raise Exception("No database selected")
        if not data:
            return False
        if isinstance(data, dict):
            doc = couchdb.Document()
            doc.update(data)
            self.db.create(doc)
        elif isinstance(data, couchdb.Document):
            self.db.update(data)
        elif isinstance(data, list):
            self.db.update(data)
        return True