import tkinter as tk

class loginForm(tk.Tk):
    def __init__(self):
        tk.Tk.__init__(self)
        self.title('Login')
        self.geometry('170x110')
        self.userlabel = tk.Label(text='Username:').grid(row=0, column=0)
        self.passwordlabel = tk.Label(text='Password:').grid(row=1, column=0)
        self.userentry = tk.Entry().grid(row=0, column=1)
        self.passwordentry = tk.Entry(show='*').grid(row=1, column=1)
        self.submitentries = tk.Button(text='Submit', command=self.getInfo).grid(row=2, column=0)
    def getInfo(self):
        userGet = self.passwordentry.get()
        passGet = self.userentry.get()
        print(userGet + ' ' + passGet) #just for checking purposes

top = loginForm()
top.mainloop()