__init__.py

import frappe

#khs.kong_hua_school.update_report_roles
def update_report_roles():
    #KHS Student Rankings
    #KHS Mastersheets
    #KHS Report Cards
    #Kong Hua School
    for report in frappe.db.sql("""SELECT name FROM `tabReport` WHERE `tabReport`.module 
                                                              IN ('KHS Student Rankings',
                                                                'KHS Mastersheets',
                                                                'KHS Report Cards',
                                                                'Kong Hua School')"""):
        print(report)
        report_doc = frappe.get_doc("Report",report[0])
        # report_doc.set_doctype_roles()
        # report_doc.save()

        meta = frappe.get_meta(report_doc.ref_doctype)
        roles = [{'role': d.role} for d in meta.permissions if d.permlevel == 0]
        report_doc.set('roles', roles)


        args = {
                'report': report[0]
            }
        name = frappe.db.get_value('Custom Role', args, "name")

        args.update({
            'doctype': 'Custom Role',
            'roles': roles
        })

        # if self.report:
        args.update({'ref_doctype': frappe.db.get_value('Report', report[0], 'ref_doctype')})

        if name:
            custom_role = frappe.get_doc("Custom Role", name)
            roles_ = []
            for data in roles:
                if data['role'] != "All":
                    roles_.append({
                        'role': data['role'],
                        'parenttype': 'Custom Role'
                    })
            custom_role.set('roles', roles_)
            custom_role.save()
        else:
            frappe.get_doc(args).insert()