To make my code more readable, I need two methods so that the first one loads in memory the data that the second one will process.

class Sample(models.Model)

    data = []

    def get_data():

        self.data = _get_data

    def process_data():

       for item in self.data:

          _process_data(item)

The problem I'm having is that the first method can't write to the "field/attribute" because it says: : "'sample.sample' object attribute 'data' is read-only" while evaluating