Python窗口登录注册程序问题

Question

import tkinter as tk
import tkinter.messagebox
import pickle

window = tk.Tk()
window.title("Subscribes Manage PLT For Students from DUT-PJ")
window.geometry("680x200")
# 弹窗提示文字
tk.messagebox.showwarning(title="Something You Must Know Before Use",
                          message="Welcome to ChengFeng Tech.Studio! This program will be used as subscribe service only!")
# 加载欢迎图片
canvas = tk.Canvas(window)
image_file = tk.PhotoImage(file='E:\logo.gif')
image = canvas.create_image(8, 0, anchor='nw', image=image_file)
canvas.place(x=25, y=25)
# 设置默认值为空
var_acc = tk.StringVar()
var_pwd = tk.StringVar()
import tkinter as tk

# 账号密码输入区
tk.Label(window, text="Input your DUT account: ", font=('Arial', 14)).place(x=200, y=25)  # 账号文字
acc = tk.Entry(window, show=None, textvariable=var_acc, font=('Arial', 14)).place(x=420, y=25)  # 输入账号形式
tk.Label(window, text="Input your password:", font=('Arial', 14)).place(x=200, y=70)  # 密码文字
pwd = tk.Entry(window, show="*", textvariable=var_pwd, font=('Arial', 14)).place(x=420, y=70)  # 输入密码形式


def Login_password_test():
    accint = var_acc.get()  # 获取输入的账号
    pwdint = var_pwd.get()  # 获取输入的密码
    # 尝试查找和匹配账号和密码
    try:
        with open('users_info.pickle', 'rb') as user_file:
            users_info = pickle.load(user_file)
    # 若查找出现错误
    except FileNotFoundError:
        with open('users_info.pickle', 'wb') as user_file:
            users_info = {'admin': 'admin'}
            pickle.dump(users_info, user_file)
    if acc in users_info:
        # 账号和密码匹配
        if pwd == users_info[acc]:
            tk.messagebox.showinfo(title="Complete", message="Login successfully, welcome back!")
        # 账号和密码不匹配
        else:
            tk.messagebox.showerror(title="Failed", message="Invalid login request, check your DUT number or password you input just now.")
    # 未知账号提示注册
    else:
        is_sign_up = tk.messagebox.askyesno(title="Information", message="It seems that you havn't sign up yet. Sign up now?")
        if is_sign_up:
            Signup()


def Signup():
    def sign_to_CF():
        newpwd = intnew_userpwd.get()
        newpwdconfirm = intnew_userpwd_confirm.get()
        newacc = intnew_user.get()
        with open("users_info.pickle", "rb") as user_file:
            exist_user_info = pickle.load(user_file)
        if newpwd != newpwdconfirm:
            tk.messagebox.showerror(title="Failed",
                                    message="Invalid sign up request, check your twice iuput. They must be the same!")
        elif newacc in exist_user_info:
            tk.messagebox.showerror(title="Failed",
                                    message="Invalid sign up request, check the account you input just now. It has already exist!")
        else:
            exist_user_info[newacc] = newpwd
            with open("users_info.pickle", "wb") as user_file:
                pickle.dump(exist_user_info, user_file)
            tk.messagebox.showinfo(title="Complete", message="Welcome to be a membership of Chengfeng Tech. Studio!")
            window_sign_up.destroy()

    window_sign_up = tk.Toplevel(window)
    window_sign_up.geometry("620x300")
    window_sign_up.title("Sign up")
    new_user = tk.StringVar()
    new_user.set("example")

    tk.Label(window_sign_up, text="Input an unused DUT number: ", font=('Arial', 14)).place(x=20, y=20)  # 注册账号提示
    intnew_user = tk.Entry(window_sign_up, show=None, font=('Arial', 14)).place(x=300, y=20)  # 新账号输入框

    tk.Label(window_sign_up, text="Input your password: ", font=('Arial', 14)).place(x=20, y=80)  # 设置密码提示
    intnew_userpwd = tk.Entry(window_sign_up, show="*", font=('Arial', 14)).place(x=300, y=80)  # 新密码输入框

    new_pwd_confirm = tk.StringVar()
    tk.Label(window_sign_up, text="Confirm your password: ", font=('Arial', 14)).place(x=20, y=140)  # 确认密码提示
    intnew_userpwd_confirm = tk.Entry(window_sign_up, show="*", font=('Arial', 14)).place(x=300, y=140)  # 确认密码输入框
    # 注册确认按钮
    tk.Button(window_sign_up, text='Sign up', font=('Arial', 10), width=10, height=1, command=sign_to_CF).place(x=300, y=200)


# 登录按钮
tk.Button(window, text='Login', font=('Arial', 10), width=10, height=1, command=Login_password_test).place(x=280, y=125)
# 注册按钮
tk.Button(window, text='Sign Up By DUT Numbers', font=('Arial', 10), width=22, height=1, command=Signup).place(x=400,
                                                                                                               y=125)

window.mainloop()  # 循环

这个代码点注册之后总是弹出AttributeError: 'NoneType' object has no attribute 'get'
哪位高人能给debug下

Answer 1

【以下回答由 GPT 生成】

问题分析：

根据提供的代码，你遇到的问题可能是登录功能没有得到正确的结果。问题可能出现在密码匹配部分，以及弹窗提示的逻辑上。

解决方案：

首先，要注意变量名的使用问题。在登录函数中，你获取了输入的账号和密码，但是在比较时却使用了错误的变量名。

accint = var_acc.get()  # 获取输入的账号
pwdint = var_pwd.get()  # 获取输入的密码

然后，你尝试使用pickle模块来加载和保存用户信息。在登录函数中，你应该使用获取到的账号和密码去匹配从pickle文件中读取出的用户信息。

# 尝试查找和匹配账号和密码
try:
    with open('users_info.pickle', 'rb') as user_file:
        users_info = pickle.load(user_file)
# 若查找出现错误
except FileNotFoundError:
    with open('users_info.pickle', 'wb') as user_file:
        users_info = {'admin': 'admin'}
        pickle.dump(users_info, user_file)

if accint in users_info:
    # 账号和密码匹配
    if pwdint == users_info[accint]:
        tk.messagebox.showinfo(title="Complete", message="登录成功!")

此外，你可以在登录成功后弹出成功的登录提示框。如果没有账号和密码的匹配，可以弹出失败的提示框。

# 账号和密码匹配
if pwdint == users_info[accint]:
    tk.messagebox.showinfo(title="Complete", message="登录成功!")
else:
    tk.messagebox.showinfo(title="Failed", message="账号或密码错误!")

综上所述，你可以尝试以下修改：

def Login_password_test():
    accint = var_acc.get()  # 获取输入的账号
    pwdint = var_pwd.get()  # 获取输入的密码

    # 尝试查找和匹配账号和密码
    try:
        with open('users_info.pickle', 'rb') as user_file:
            users_info = pickle.load(user_file)
    except FileNotFoundError:
        with open('users_info.pickle', 'wb') as user_file:
            users_info = {'admin': 'admin'}
            pickle.dump(users_info, user_file)

    if accint in users_info:
        # 账号和密码匹配
        if pwdint == users_info[accint]:
            tk.messagebox.showinfo(title="Complete", message="登录成功!")
        else:
            tk.messagebox.showinfo(title="Failed", message="账号或密码错误!")
    else:
        tk.messagebox.showinfo(title="Failed", message="账号或密码错误!")

希望以上解决方案对你有帮助！如有任何疑问，请随时提问。

【相关推荐】

• 这个问题的回答你可以参考下: https://ask.csdn.net/questions/7728650
• 你也可以参考下这篇文章：Python 如何解决'NoneType' object has no attribute '...'的问题
• 除此之外, 这篇博客: Python学习笔记：‘’AttributeError: NoneType object has no attribute‘’中的 出处 部分也许能够解决你的问题。

如果你已经解决了该问题, 非常希望你能够分享一下解决方案, 写成博客, 将相关链接放在评论区, 以帮助更多的人 ^-^