python 编写登录界面

import tkinter as tk

from tkinter import messagebox

def on_login():

username = username_entry.get()

password = password_entry.get()

这里只是模拟验证，实际中应从数据库验证

if username == "admin" and password == "password":

messagebox.showinfo("登录成功", "登录成功！")

else:

messagebox.showerror("登录失败", "用户名或密码错误！")

创建主窗口

root = tk.Tk()

root.title("登录界面")

root.geometry("400x300") # 设置窗口大小

设置窗口背景色

root.configure(bg='#f0f0f0')

创建一个框架用于放置用户名和密码输入框

frame = tk.Frame(root, bg='#e0e0e0', padx=20, pady=20)

frame.pack(pady=20)

创建用户名和密码的标签和输入框

tk.Label(frame, text="用户名:", bg='#e0e0e0', font=("Arial", 12)).grid(row=0, column=0, sticky='e')

username_entry = tk.Entry(frame, font=("Arial", 12))

username_entry.grid(row=0, column=1, pady=5)

tk.Label(frame, text="密码:", bg='#e0e0e0', font=("Arial", 12)).grid(row=1, column=0, sticky='e')

password_entry = tk.Entry(frame, font=("Arial", 12), show="*")

password_entry.grid(row=1, column=1, pady=5)

创建登录按钮

login_button = tk.Button(root, text="登录", font=("Arial", 12), command=on_login)

login_button.pack(pady=10)

运行主循环

root.mainloop()