can'' find the sys modul

Question

I want to start learing creating menu's, so, this is a script i found for testing. There are no faults in it, but he doesn't show a window with the menu's. I have looked for the reason and the problem is that he can't find the sys.

First the code I use:

import sys

print(sys.path)
sys.path.insert(0,'C:\anaconda3\Lib\site-packages')
from qtpy.QtCore import Qt
from qtpy.QtWidgets import QApplication, QLabel, QMainWindow

class Window(QMainWindow):
    def _init_(self, parent=None):
        
        super()._init_(parent)
        self.setWindowTitle("Probeersel")
        self.resize(400, 200)
        self.centralWidget = QLabel("Hello")
        self.centralWidget.setAlignment(Qt.AlignHCenter | Qt.AlingVCenter)
       self.setCentralWidget(self.centralWidget)

if __name__ == "_main_":
    app = QApplication(sys.argv)
    win = Window()
    win.show()
    sys.exit(app.exec_())

I have allready uninstall anaconda and reinstall it. But, the same thing, not working. I have put my save in the anaconda folder, but still not working.

I have looked all ready her to find a solution, but no, still not working :(