python界面 entry中textvariable

表示什么意思？

`textvariable`是一个Tkinter界面控件的选项之一，用于将控件与一个Python变量（通常是Tkinter变量）关联起来。当用户在控件中输入文本时，该变量将被更新，并且当该变量的值改变时，该控件的显示文本也将被更新。这样可以方便地在代码中获取和设置控件的值，而无需手动解析用户输入的文本。

相关问题

python登录界面

要制作一个简单的登录界面，你可以使用Python的tkinter库。下面是一个简单的示例代码：

from tkinter import *
from tkinter.messagebox import *

root = Tk()
root.title('登录页面')
root.geometry("800x400+100+150")

log_name = StringVar()
log_pwd = StringVar()

def btn_login():
    if log_name.get() == 'admin' and log_pwd.get() == '123':
        showinfo('提示信息','登录成功~')
    else:
        showwarning('提示信息','用户名或密码输入有误~')

Label(root,text='账号:',font=('幼圆',20)).place(x=200,y=80)
Entry(width=27,font=('幼圆',20),textvariable=log_name).place(x=280,y=88)
Label(root,text='密码:',font=('幼圆',20)).place(x=200,y=150)
Entry(width=27,font=('幼圆',20),show='*',textvariable=log_pwd).place(x=280,y=150)
Button(text='登录', background='white', foreground='black',width=15, font=('幼圆',20), command=btn_login).place(x=150,y=220)
Button(text='退出', background='white', foreground='black', width=15, font=('幼圆',20), command=lambda:root.quit()).place(x=400,y=220)

root.mainloop()

这段代码使用了tkinter库创建了一个窗口，并在窗口中添加了账号输入框、密码输入框和登录按钮。当用户点击登录按钮时，程序会检查输入的账号和密码是否正确，如果正确则显示登录成功的提示信息，否则显示用户名或密码输入有误的提示信息。你可以根据自己的需求修改代码中的账号和密码验证逻辑。
#### 引用[.reference_title]
- *1* *2* [Python设置登录窗口（很简单）](https://blog.csdn.net/weixin_67855345/article/details/125410820)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
- *3* [Python制作登陆界面（2）（中等级）](https://blog.csdn.net/Ez135/article/details/125819019)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
[ .reference_list ]

python登录注册界面

实现一个登录注册界面可以通过 Python 的 GUI 库 Tkinter 来完成。以下是一个简单的例子：

from tkinter import *

def register_user():
    username_info = username.get()
    password_info = password.get()

    file = open(username_info + ".txt", "w")
    file.write(username_info + "\n")
    file.write(password_info)
    file.close()

    username_entry.delete(0, END)
    password_entry.delete(0, END)

    Label(register_screen, text="Registration Success", fg="green", font=("calibri", 11)).pack()

def register():
    global register_screen
    register_screen = Toplevel(main_screen)
    register_screen.title("Register")
    register_screen.geometry("300x250")

    global username
    global password
    global username_entry
    global password_entry
    username = StringVar()
    password = StringVar()

    Label(register_screen, text="Please enter details below").pack()
    Label(register_screen, text="").pack()
    username_label = Label(register_screen, text="Username * ")
    username_label.pack()
    username_entry = Entry(register_screen, textvariable=username)
    username_entry.pack()
    password_label = Label(register_screen, text="Password * ")
    password_label.pack()
    password_entry = Entry(register_screen, textvariable=password, show='*')
    password_entry.pack()
    Label(register_screen, text="").pack()
    Button(register_screen, text="Register", width=10, height=1, command=register_user).pack()

def login_verify():
    username_login = username_verify.get()
    password_login = password_verify.get()
    username_entry1.delete(0, END)
    password_entry1.delete(0, END)

    list_of_files = os.listdir()
    if username_login + ".txt" in list_of_files:
        file1 = open(username_login + ".txt", "r")
        verify = file1.read().splitlines()
        if password_login in verify:
            login_success()
        else:
            password_not_recognised()
    else:
        user_not_found()

def login_success():
    global login_success_screen
    login_success_screen = Toplevel(main_screen)
    login_success_screen.title("Success")
    login_success_screen.geometry("150x100")
    Label(login_success_screen, text="Login Success").pack()
    Button(login_success_screen, text="OK", command=delete_login_success).pack()

def password_not_recognised():
    global password_not_recog_screen
    password_not_recog_screen = Toplevel(main_screen)
    password_not_recog_screen.title("Success")
    password_not_recog_screen.geometry("150x100")
    Label(password_not_recog_screen, text="Password Error").pack()
    Button(password_not_recog_screen, text="OK", command=delete_password_not_recognised).pack()

def user_not_found():
    global user_not_found_screen
    user_not_found_screen = Toplevel(main_screen)
    user_not_found_screen.title("Success")
    user_not_found_screen.geometry("150x100")
    Label(user_not_found_screen, text="User Not Found").pack()
    Button(user_not_found_screen, text="OK", command=delete_user_not_found_screen).pack()

def delete_login_success():
    login_success_screen.destroy()

def delete_password_not_recognised():
    password_not_recog_screen.destroy()

def delete_user_not_found_screen():
    user_not_found_screen.destroy()

def login():
    global login_screen
    login_screen = Toplevel(main_screen)
    login_screen.title("Login")
    login_screen.geometry("300x250")
    Label(login_screen, text="Please enter details below to login").pack()
    Label(login_screen, text="").pack()

    global username_verify
    global password_verify

    username_verify = StringVar()
    password_verify = StringVar()

    global username_entry1
    global password_entry1

    Label(login_screen, text="Username * ").pack()
    username_entry1 = Entry(login_screen, textvariable=username_verify)
    username_entry1.pack()
    Label(login_screen, text="").pack()
    Label(login_screen, text="Password * ").pack()
    password_entry1 = Entry(login_screen, textvariable=password_verify, show='*')
    password_entry1.pack()
    Label(login_screen, text="").pack()
    Button(login_screen, text="Login", width=10, height=1, command=login_verify).pack()

def main_account_screen():
    global main_screen
    main_screen = Tk()
    main_screen.geometry("300x250")
    main_screen.title("Account Login")

    Label(text="Select Your Choice", bg="blue", width="300", height="2", font=("Calibri", 13)).pack()
    Label(text="").pack()
    Button(text="Login", height="2", width="30", command=login).pack()
    Label(text="").pack()
    Button(text="Register", height="2", width="30", command=register).pack()

    main_screen.mainloop()

main_account_screen()

以上代码包含了注册和登录两个功能。在注册时，程序会将用户名和密码保存到文本文件中。在登录时，程序会从文本文件中读取用户名和密码进行验证。如果登录成功，程序会弹出一个“登录成功”的窗口。如果密码错误或用户名不存在，则会弹出相应的提示窗口。

请注意，这只是一个简单的例子，没有实现数据加密等安全措施。实际应用中，需要注意数据的安全性。