katmai1

import sys

from PyQt5.QtWidgets import *
from PyQt5.QtCore import *

class Widget(QWidget):
    def __init__(self, *args, **kwargs):
        QWidget.__init__(self, *args, **kwargs)
        hlay = QHBoxLayout(self)
        self.treeview = QTreeView()

katmai1

# from: https://doc.qt.io/qt-5/qtcharts-nesteddonuts-example.html
import functools
import random

from PyQt5.QtChart import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *

class Widget(QWidget):

katmai1

import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtCore import Qt


class TableModel(QtCore.QAbstractTableModel):
    def __init__(self, data):
        super(TableModel, self).__init__()
        self._data = data