缺少1个必需的位置参数：“ self”且没有属性长度

我正在为PC做一​​个愚蠢的“抗冠状病毒”。这是代码：

import tkinter as tk
from tkinter import \*        from tkinter import ttk
import random
window=Tk()
window.geometry('500x500')
window.resizable(False, False)
window.title('Anti Corona')
window.config(bg='light blue')
anti=tk.Label(text='Anti Corona')
anti.config(bg='light blue', font=('Arial black', 50))
anti.pack()
anti2=tk.Label(text='')
anti2.config(bg='light blue', font=('Arial black', 100))
anti2.pack()
def scaner(self):
    self.f1=tk.Frame()
    self.f1.pack()
    self.progress=ttk.Progressbar(f1)
    self.progress.length(50)
    self.progress.pack() 
scan=tk.Button(window, text='Scan!')
scan.config(height=1, width=10, font=('Century gothic', 30, 'bold'), bg='green', disabledforeground='', command=scaner())
scan.pack()

window.mainloop()

问题是它输出一个错误：

Traceback (most recent call last):
  File "C:\Users\cicle.EAAULAINF1W-008\Desktop\Anticorona.py", line 23, in <module>
    scan.config(height=1, width=10, font=('Century gothic', 30, 'bold'), bg='green', disabledforeground='', command=scaner())
TypeError: scaner() missing 1 required positional argument: 'self'

但是当我退出def中的所有self时，输出为：

Traceback (most recent call last):
  File "C:\Users\cicle.EAAULAINF1W-008\Desktop\Anticorona.py", line 23, in <module>
    scan.config(height=1, width=10, font=('Century gothic', 30, 'bold'), bg='green', disabledforeground='', command=scaner())
  File "C:\Users\cicle.EAAULAINF1W-008\Desktop\Anticorona.py", line 20, in scaner
    progress.length(50)
AttributeError: 'Progressbar' object has no attribute 'length'

我不知道该怎么办！请帮帮我！

问题来源：stackoverflow