print username n password

from tkinter import*
import tkinter as tk

def passLogin():
        user = username.get()
        pass1 = passcode.get()
        print (user,  pass1)

class JulliesGrader(tk.Tk):

    def __init__(j1, *args, **kwargs):
        tk.Tk.__init__(j1, *args, **kwargs)


    #==============J1 CONTAINER HOLDING FRAMES================
        mercie = tk.Frame(j1)
        mercie.pack(side="top",  fill="both",  expand=False)
        mercie.grid_rowconfigure(0, weight=1)
        mercie.grid_columnconfigure(0, weight=1)

        j1.frames = {}
        for F in (LoginPage,  NavPage):
            page_name = F.__name__
            frame = F(parent=mercie, controller=j1)
            j1.frames[page_name] = frame

            frame.grid(row=0, column=0, sticky="nsew")

        j1.show_frame("LoginPage")

    def show_frame(j1, page_name):
        '''Show a frame for the given page name'''
        frame = j1.frames[page_name]
        frame.tkraise()

class LoginPage(tk.Frame):
     def __init__(j1, parent, controller):
        tk.Frame.__init__(j1, parent,  bg="wheat")
        j1.controller = controller
        label_user =Label(j1,  text = "User",  bg="wheat")
        label_pass = Label(j1,  text = "Password",  bg="wheat")
        username = StringVar()
        entry_user = Entry(j1,  textvariable = username)
        passcode = StringVar()
        entry_pass = Entry(j1, show = "*",  textvariable=passcode)

        label_user.grid(row = 0,  sticky=E)
        label_pass.grid(row = 1)
        entry_user.grid(row=0,  column= 1)
        entry_pass.grid(row=1,  column=1)

        jullies_check = Checkbutton(j1,  text="Keep me logged in",  bg="wheat")
        jullies_check.grid(columnspan=2)

        confirm_pass = Button(j1,  text = "Sign Me In", bg="wheat", command=passLogin)
        confirm_pass.grid(columnspan=2)

class NavPage(tk.Frame):
     def __init__(j1, parent, controller):
        tk.Frame.__init__(j1, parent,  bg="wheat")
        j1.controller = controller
        label = tk.Label(j1, text="This is page 2")
        label.pack(side="top", fill="x", pady=10)
        button = tk.Button(j1, text="Go to the other page",
                           command=lambda: controller.show_frame("LoginPage"))
        button.pack()



if __name__ == "__main__":
    jullies =JulliesGrader()
    jullies.title("Academic Software")
    jullies.resizable(0,  0)
    jullies.mainloop()