from tkinter import *
import msvcrt
root=Tk()

varName = StringVar()
varPassword = StringVar()

myFrame=Frame(root)
myFrame.pack()
root.title("Logon screen")
root.resizable(0,0)
root.config(width="100", height="3444444444444")

#Username entry box
username=Entry(myFrame, textvariable=varName)
username.grid(row=0, column=1, padx=10, pady=10)

#Password entry box
password=Entry(myFrame, textvariable=varPassword)
password.grid(row=1, column=1, padx=10, pady=10)
password.config(show="*")

#Usename label
usernameLabel=Label(myFrame, text="Username: ")
usernameLabel.grid(row=0, column=0, padx=10, pady=10)

#Password label
passwordLabel=Label(myFrame, text="Password: ")
passwordLabel.grid(row=1, column=0, padx=10, pady=10)

#Submit button
def submitButton():

    v1 = varName.get() #Obtain var name
    v2 = varPassword.get() #Obtain var password

    if  v1 != "" and v2 != "":
        print((v1), (v2))
        myFrame.quit()

submit=Button(myFrame, text="Submit", command=submitButton)
submit.grid(row=2, column=1)

root.mainloop()