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。