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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 are_budget_data_package_fields_filled_in(self, resource):
 """ Check if the budget data package fields are all filled in because if not then this can't be a budget data package """

        fields = ['country', 'currency', 'year', 'status']
        return all([self.in_resource(f, resource) for f in fields])