```File "C:\Users\Marek\energyECO\Gewinnspiel\clearEntry.py", line 9, in register_user
vorname_entry.delete(0, END)
AttributeError: 'NoneType' object has no attribute 'delete'```
Das ist der Error
Und das der Code:
from tkinter import *
import csv
def register_user():
vorname_info = vorname.get()
nachname_info = nachname.get()
email_info = email.get()
# open the file in the write mode
with open('Benutzernamen.csv', 'a', newline='', encoding='UTF8') as f:
# create the csv writer
writer = csv.writer(f, delimiter =';')
# write a row to the csv file
row=[vorname_info, nachname_info, email_info]
writer.writerow(row)
# close the file
f.close()
#vorname_entry.delete(0, END)
#nachname_entry.delete(-0, END)
Label(screen1, text="energyECO")
vorname_entry.delete(0, 'end')
nachname_entry.delete(0, 'end')
email_entry.delete(0, 'end')
def register():
global screen1
screen1 = Toplevel(screen)
screen1.title("Gewinnspiel")
screen1.geometry("550x500")
global vorname
global nachname
global email
vorname = StringVar()
nachname = StringVar()
email = StringVar()
global vorname_entry
global nachname_entry
global email_entry
Label(screen1, text="Bitte tragen sie ihren Vor- und Nachnamen und außerdem ihre E-Mail ein", font=('Arial 15')).pack()
Label(screen1, text=" ").pack()
Label(screen1, text="Vorname * ", font=('Arial 12')).pack()
vorname_entry = Entry(screen1,width=50, font=('Arial 20'), textvariable=vorname).pack()
Label(screen1,text=" ").pack()
Label(screen1, text="Nachname * ", font=('Arial 12')).pack()
nachnamne_entry = Entry(screen1,width=50, font=('Arial 20'), textvariable=nachname).pack()
Label(screen1,text=" ").pack()
Label(screen1, text="E-Mail * ", font=('Arial 12')).pack()
email_entry = Entry(screen1,width=50, font=('Arial 20'), textvariable=email).pack()
Label(screen1,text=" ").pack()
Label(screen1,text=" ").pack()
Label(screen1,text=" ").pack()
Label(screen1, text="Mit der Teilnahme am Gewinnspiel und der Eingabe meine Daten erkläre ich mich bereit, den E-Mail Newsletter von energyECO monatlich zu erhalten.", font=("Arial 10")).pack()
Label(screen1,text=" ").pack()
Button(screen1, text="Daten senden", font=('Arial 20'), width="15", height="2", command=register_user).pack()
def close():
print("Closed!")
screen.destroy()
screen1.destroy()
def main_screen():
global screen
screen = Tk()
screen.geometry("300x250")
screen.title("energyECO")
Label(text="energyECO", bg="gray", width="300", height="2", font=("Calibri", 13)).pack()
Label(text=" ").pack()
Button(text="Gewinnspiel", height="2", width="30", command=register).pack()
Label(text=" ").pack()
Label(text=" ").pack()
Label(text=" ").pack()
Button(text="Close", command=close).pack()
Label(text=" ").pack()
screen.mainloop()
main_screen()
