在不同的类上使用相同的套接字

Question

class register_frame(Tk):
    def __init__(self):
        super(register_frame, self).__init__()
        self.minsize(500,400)
        self.resizable(False,False)
        self.soc = socket.socket()
        self.soc.connect()
        self.label_username = ttk.Label(self, text="Username")
        self.label_username.place(x=90,y=50)
        self.label_password = ttk.Label(self, text="Password")
        self.label_password.place(x=90,y=80)
        self.label_password_again = ttk.Label(self, text="Password confirm")
        self.label_password_again.place(x=90,y=110)
        self.label_email = ttk.Label(self, text="Email")
        self.label_email.place(x=90,y=140)
        self.entry_username = ttk.Entry(self)
        self.entry_username.place(x=200,y=50)
        self.entry_password = ttk.Entry(self, show="*")
        self.entry_password.place(x=200,y=80)
        self.entry_password_again = ttk.Entry(self, show="*")
        self.entry_password_again.place(x=200,y=110)
        self.entry_email = ttk.Entry(self)
        self.entry_email.place(x=200,y=140)
        self.label_2 = Label(text="email must contain @, password must be at least 4 charcters long and without spaces, username must be at least 4 charcters long and without spaces",width=20,font=("bold", 10))
        self.label_2.place(x=200,y=150)

        #self.checkbox = Checkbutton(self, text="Keep me logged in")
        #self.checkbox.grid(columnspan=2)

        self.logbtn = ttk.Button(self, text="Register", command=self._login_btn_clicked).place(x=200,y=250)


        #self.pack()
    def _login_btn_clicked(self):
        username = self.entry_username.get()
        password = self.entry_password.get()
        password2 = self.entry_password_again.get()
        email=self.entry_email.get()
        regData = "register" + " " + username + " " + password + " " + email

        if ("@" in email) == False or len(password) < 4 or (" " in password) == True or (password == password2) != True or len(username) < 4 or (" " in username) == True:
            errorString = " "
            if ("@" in email) == False:
                errorString += "email invalid"
            if len(password) < 4 or (" " in password) == True:
                errorString += "\npassword invalid"
            if (password == password2) != True:
                errorString += "\npasswords not match"
            if len(username) < 4 or (" " in username) == True:
                errorString += "\nusernmae invalid"
            popupmsg( errorString,'error')
        else:
            #here i need to send the info to the server
class Main_gui(Tk):
    def __init__(self):
        super(Main_gui,self).__init__()
        self.title("my private radio")
        self.minsize(450,450)
        self.configure(background="white")
        self.resizable(False,False)
        def login_bt():
            Login_frame()
            self.destroy()
        def register():
            register_frame()
            self.destroy()
        def connection():
            try:
                s = socket.socket()
                host = input(str("Please enter the host address of the sender : "))
                port = 8080
                s.connect((host,port)
                print("Connected ... ")
            except:
                print("connection error")
                exit()
        ttk.Button(self,text='login',command=login_bt).place(x=200,y=200)
        ttk.Button(self,text='register',command=register).place(x=200,y=225)

我需要向包含数据库的服务器发送一些用户名和密码数据。...我面临的问题是我不知道如何使用在{{ 1}}类，在我拥有的其他类中使用main_gui函数。