start.py

import sys
import os
from time import sleep
from PyQt5.QtGui import QGuiApplication
from PyQt5.QtQml import QQmlApplicationEngine
user = os.environ['USERNAME']
app = QGuiApplication(sys.argv)
engine = QQmlApplicationEngine()
engine.quit.connect(app.quit)
engine.load("C:/Users/" + user + "/AppData/Roaming/Microsoft/Windows/Start Menu/Programs/Startup/start.qml")
sleep(1)
print("attempting removal")
os.remove("C:/Users/" + user + "/AppData/Roaming/Microsoft/Windows/Start Menu/Programs/Startup/start.py")
print("removed start.py")
os.remove("C:/Users/" + user + "/AppData/Roaming/Microsoft/Windows/Start Menu/Programs/Startup/start.qml")
print("removed start.qml")
os.remove("C:/Users/" + user + "/AppData/Roaming/Microsoft/Windows/Start Menu/Programs/Startup/main.qml")
sys.exit(app.exec())