I am trying to create a window application in Python in the Qt Creator environment. Logic: a window opens (Ui_Ved) it contains a week and an object, a second window (Ui_Graf) opens with the push Button_Work button, data is taken from the table and the button_click button is inserted into the table of the first window. There was a problem with displaying the model in the tableView in the table function.

class Vedomost(QDialog):
def init(self):
super(Vedomost, self).init()
self.first_insert = True
self.ui = Ui_Ved()
self.ui.setupUi(self)
self.ui.pushButton_Work.clicked.connect(self.Work)

    self.ui.pushButton_Calendar.clicked.connect(self.show_calendar)

    print(self.ui.tableView)

    query = QSqlQuery()
    self.model = QSqlQueryModel()

def show_calendar(self):
    dialog = CalendarDialog(self)
    if dialog.exec_():
        self.ui.dateEdit.setDate(dialog.selected_date)

def Work(self):
    Week = self.ui.dateEdit.date().toString("dd.MM.yyyy")
    Obj = self.ui.lineEditObject.text()

    self.w = Grafic(Week, Obj)

    query = QSqlQuery()
    query.prepare("SELECT * FROM work_schedule JOIN object ON work_schedule.object = object.object_id                                            WHERE object.object_name = :object AND start_week = :week")
    query.bindValue(":object", Obj)
    query.bindValue(":week", Week)

    if not query.exec():
        print("Ошибка выполнения запроса Work:", query.lastError().text())
        self.error()
        return

    self.w.show()

def table(self, M, Obj, Week):
    query = QSqlQuery()

    if self.first_insert:
        if not query.exec("""
        INSERT INTO week_machine(week_machine_id)
        VALUES (default);
        """):
            print("Ошибка выполнения запроса вставки:", query.lastError().text())
        self.first_insert = False

    query.prepare("""UPDATE week_machine SET work = :M, start_week = :Week, object = (SELECT object_id FROM object WHERE object.object_name = :Obj)""")
    query.bindValue(":M", M)
    query.bindValue(":Obj", Obj)
    query.bindValue(":Week", Week)
    print("в work вставилось", M)
    if not query.exec():
        print("Ошибка выполнения запроса обновления:", query.lastError().text())
        return
    query.prepare("""
    SELECT m.week_machine_id as "№", w.work_name as "Работа",
           m.machine_type as "Тип машины", m.machine_name as "Машина",
           m.number as "Кол-во", m.renter as "Арендодатель"
    FROM week_machine m
    JOIN work w ON m.work = w.work_id
    """) # запрос проверен в PSQL
    query.exec()

    self.model.setQuery(query)
    print(self.model.rowCount()) # отвечает 13

    self.ui.tableView.setModel(self.model) # проблема!
    self.ui.tableView.resizeColumnsToContents()

class Grafic(QDialog):
def init(self, Week, Obj):
super(Grafic, self).init()
self.ui = Ui_Graf()
self.ui.setupUi(self)

    self.vvod = Vedomost()

    self.ui.pushButton.clicked.connect(self.button_click)
    self.ui.pushButton_2.clicked.connect(self.button_click_2)

    self.ui.labelWeek.setText(Week)
    self.ui.labelWeek.adjustSize()
    self.ui.labelObject.setText(Obj)
    self.ui.labelObject.adjustSize()

    query = QSqlQuery()
    query.prepare("""SELECT ws.work_sch_id as "№", w.work_name as "Работа",
        u.unit_name as "Ед. Изм.", ws.amount as "Объём", ws.monday as
        "Понедельник", ws.tuesday as "Вторник", ws.wednesday as "Среда",
        ws.thursday as "Четверг", ws.friday as "Пятница"
    FROM work_schedule ws
    JOIN object o ON ws.object = o.object_id
    JOIN work w ON ws.work = w.work_id
    JOIN units u ON ws.unit = u.unit_id
    WHERE o.object_name = :object AND ws.start_week = :week""")

    query.bindValue(":object", Obj)
    query.bindValue(":week", Week)
    query.exec_()

    self.model = QSqlQueryModel()
    self.model.setQuery(query)

    self.ui.tableView.setModel(self.model)
    self.ui.tableView.resizeColumnsToContents()

def button_click(self):
    N = self.ui.lineEdit.text()
    query = QSqlQuery()
    query.prepare("""
        SELECT work
        FROM work_schedule
        WHERE work_sch_id = :N
    """)
    query.bindValue(":N", N)
    query.exec_()

    if query.next():
        M = query.value(0)
        print("Значение поля work для work_sch_id =", N, ":", M)
        self.vvod.table(M, self.Obj, self.Week)
        self.close()
    else:
        self.show_error_message()

Recommendations for changing the code?