这是什么 - 命令错误，我该如何摆脱它？

Question

所以我一直在关注在线教程并自己编写它，这样我就可以习惯这些错误，但我现在遇到错误“未知选项”-Command”

它似乎只影响应该关闭 window 的确定按钮。

如果能帮助理解问题以及如何解决问题，我们将不胜感激

为了创建用于登录的用户文件，只需创建一个名为“user”的文档，文档中的文本如下：用户 123

这将是登录的用户名和密码

代码如下：

from tkinter import *
import os

def delete2():
    screen3.destroy()
   
def delete3():
    screen4.destry()
   
def delete4():
    screen5.destroy()
   
def login_sucess():
    global screen3
    screen3 = Toplevel(screen)
    screen3.title("Sucess")
    screen3.geometry("150x100")
    Label(screen3, text = "Login Sucess").pack()
    Button(screen3, text = "OK", Command =delete2).pack()

def password_not_recognised():
    global screen4
    screen4 = Toplevel(screen)
    screen4.title("Sucess")
    screen4.geometry("150x100")
    Label(screen4, text = "Password Error").pack()
    Button(screen4, text = "OK", Command =delete2).pack()
   
def user_not_found():
    global screen5
    screen5 = Toplevel(screen)
    screen5.title("Sucess")
    screen5.geometry("150x100")
    Label(screen5, text = "User Not Found").pack()
    Button(screen5, text = "OK", Command =delete2).pack()
   
def login_verify():
    username1 = username_verify.get()
    password1 = password_verify.get()
    username_entry1.delete(0, END)
    password_entry1.delete(0, END)
   
    list_of_files = os.listdir()
    if username1 in list_of_files:
        file1 = open(username1, "r")
        verify = file1.read().splitlines()
        if password1 in verify:
            login_sucess()
        else:
            password_not_recognised()
           
    else:
        user_not_found()
       
   
def login():
    global screen2
    screen2 = Toplevel(screen)
    screen2.title("Login")
    screen2.geometry("300x250")
    Label(screen2, text = "please enter details below to login").pack()
    Label(screen2, text = "").pack()
   
    global username_verify
    global password_verify
   
    username_verify = StringVar()
    password_verify = StringVar()
   
    global username_entry1
    global password_entry1
   
    Label(screen2, text = "Username * ").pack()
    username_entry1 = Entry(screen2, textvariable = username_verify)
    username_entry1.pack()
    Label(screen2, text = "").pack()
    Label(screen2, text = "Password * ").pack()
    password_entry1 = Entry(screen2, textvariable = password_verify)
    password_entry1.pack()
    Label(screen2, text = "").pack()
    Button(screen2, text = "Login", width = 10, height = 1, command = login_verify).pack()
   
def main_screen():
    global screen
    screen = Tk()
    screen.geometry("300x250")
    screen.title("Remote Monitoring Site 1")
    Label(text = "Remote Monitoring Site 1", bg = "grey", width = "300", height = "2", font = ("Calibri", 13)).pack()
    Label(text = "").pack()
    Button(text = "Login", width = "30", height = "2", command = login).pack()
    Label(text = "").pack()
    Button(text = "Register", width = "30", height = "2", command = register).pack()
   
    screen.mainloop()
   
main_screen()

完整错误如下：

self.tk.call( _tkinter.TclError：未知选项“-Command”

我已经尝试研究，但没有找到解决我的问题的方法。

Answer 1

python 函数的选项是 case-sensitive，意思是 command（这是您要设置的选项）与 Command 不同。在所有情况下将 Button(screen4, text = "OK", Command =delete2).pack() 更改为 Button(screen4, text = "OK", command =delete2).pack()。

这是什么 - 命令错误，我该如何摆脱它？

What is this -Command error and how do i get rid of it?

python

authentication

tkinter

tk