I'm trying to write a QPainter update Interval

[yskioi]

I'm going to use the QPainter update to make the shape appear and hit, but if I run the thread, it won't come up. What's wrong with it?
the part of a problem
while not e.wait(1):
self.update()

import sys
from PyQt5.QtWidgets import QWidget, QApplication , QPushButton, QVBoxLayout 
from PyQt5.QtGui import QPainter, QPen, QColor, QBrush
from PyQt5.QtCore import Qt
import numpy as np
 
import threading
 
class MyApp(QWidget):
 
    def __init__(self):
        super().__init__()
        self.initUI()
 
    def initUI(self):        
        self.setGeometry(300, 300, 400, 400)
        self.setWindowTitle('Rect')
        self.show()
 
    def paintEvent(self, e):
        qp = QPainter()
        qp.begin(self)       
        self.draw_rect(qp)
        e = threading.Event()
#the part of a problem
        while not e.wait(1):  
            self.update()      
        qp.end()
 
 
    def draw_rect(self, qp):
        qp.setBrush(QColor(0, 0, 0))
        for i in range(5):
            rand_x = 100 * np.random.randn()
            rand_y = 100 * np.random.randn()
            qp.drawRect(self.width() / 2 + rand_x, self.height() / 2 + rand_y, 10, 10)
 
 
 
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = MyApp()
    sys.exit(app.exec_())

import sys
from PyQt5.QtWidgets import QWidget, QApplication , QPushButton, QVBoxLayout 
from PyQt5.QtGui import QPainter, QPen, QColor, QBrush
from PyQt5.QtCore import Qt
import numpy as np

import threading

class MyApp(QWidget):

    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):        
        self.setGeometry(300, 300, 400, 400)
        self.setWindowTitle('Rect')
        self.show()

    def paintEvent(self, e):
        qp = QPainter()
        qp.begin(self)       
        self.draw_rect(qp)
        e = threading.Event()
#the part of a problem
        while not e.wait(1):  
            self.update()      
        qp.end()
        

    def draw_rect(self, qp):
        qp.setBrush(QColor(0, 0, 0))
        for i in range(5):
            rand_x = 100 * np.random.randn()
            rand_y = 100 * np.random.randn()
            qp.drawRect(self.width() / 2 + rand_x, self.height() / 2 + rand_y, 10, 10)
        


if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = MyApp()
    sys.exit(app.exec_())

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