一个很low的登录界面

import tkinter as tk
from tkinter import messagebox
import socket
def receive(name=None,password=None):
    sk = socket.socket()  # 创建客户套接字
    sk.connect(('192.168.13.142', 8898))  # 尝试连接服务器
    send=name+"|"+password
    send1=send.encode("utf-8")
    sk.send(send1)
    ret = sk.recv(1024)  # 对话(发送/接收)
    ret1=ret.decode("utf-8")
    sk.close()
    return ret1
def denglu():
    window = tk.Tk()
    window.title('欢迎登陆')
    window.geometry('400x250')

    canvas = tk.Canvas(window, height=100, width=200)#创建画布
    image_file = tk.PhotoImage(file='logo.png')#加载图片文件
    image = canvas.create_image(0,0, anchor='nw', image=image_file)#将图片置于画布上
    canvas.pack(side='top')#放置画布（为上端）

    tk.Label(window, text='User name: ').place(x=50, y= 120)#创建一个`label`名为`User name: `置于坐标（50,150）
    tk.Label(window, text='Password: ').place(x=50, y= 150)

    var_usr_name = tk.StringVar()#定义变量
    var_usr_name.set('example@oldboy.com')#变量赋值'example@python.com'
    entry_usr_name = tk.Entry(window, textvariable=var_usr_name)#创建一个`entry`，显示为变量`var_usr_name`即图中的`example@python.com`
    entry_usr_name.place(x=160, y=120)
    var_usr_pwd = tk.StringVar()
    entry_usr_pwd = tk.Entry(window, textvariable=var_usr_pwd, show='*')#`show`这个参数将输入的密码变为`***`的形式
    entry_usr_pwd.place(x=160, y=150)

    flag=0
    def usr_login():
        nonlocal flag
        if flag<3:
            usr_name = var_usr_name.get()
            usr_pwd = var_usr_pwd.get()
            sign_s=receive(str(usr_name),str(usr_pwd))
            # sign_s=sign_s.decode("utf-8")
            if sign_s=="登陆成功":
                messagebox.showinfo(title='', message='登陆成功')
                flag=0
                exit()
            else:
                flag += 1
                messagebox.showinfo(title='', message='账户或密码错误,剩余登录次数为%s' % (3 - flag))
                if flag>=3:
                    exit()


    btn_login = tk.Button(window, text='Login', command=usr_login)#定义一个`button`按钮，名为`Login`,触发命令为`usr_login`
    btn_login.place(x=160, y=180)

    window.mainloop()

denglu()

客户端

import socket
server = socket.socket()
server.bind(('192.168.13.142',8001))
server.listen(5)
while True:
    conn,addr = server.accept()
    # 字节类型
    while True:
        data = conn.recv(1024) # 阻塞
        if data == b'exit':
            break
        response = data + b' SB'
        conn.send(response)
    conn.close()