Login

#import the 'tkinter' module
import tkinter
#sets variable secs to be used in countdown
sec=5
import urllib.request
import base64
URL = "https://lh3.googleusercontent.com/5oh994t2XLUThXYZQgeH3lv7Zv0cAHh8qJPuK82tqES6oFDASv4j43D0Hsps84_IhjM=w300"
u = urllib.request.urlopen(URL)
raw_data = u.read()
u.close()
b64_data = base64.encodestring(raw_data)
#definding func that checks pass and username and if correct opens window
def newWin():
    #getting pass and username
    password=entPassword.get()
    username=entUsername.get()
    if username=='user' and password=='pass': #if username and password is correct run this
        #creats a new window with black background
        win=tkinter.Tk()
        win.configure(background='black')
        #creates a label
        lbl=tkinter.Label(win,text="Hello",fg='red',bg='black',font=("symbol", 32))
        lbl.pack()
        win.after(5000,win.destroy) #close window after 5 seconds, 5000 miliseconds=5 seconds
    else: #if username or password is wrong run this
        root = tkinter.Tk() #opens up new window with message
        lbl=tkinter.Label(root,text='This program will shut down in...', fg='red',bg='black', font=('Helvetica',32))
        lbl.pack()
        root.configure(bg='black')
        #sets a label with no text
        time = tkinter.Label(root, fg='red',bg='black',font=('Helvetica',32))
        time.pack()
        #adds text to the lable
        #this is a countdown timer
        def tick():
            #calls on the variable sec
            global sec
            #sets sec as the text for the empty label
            time['text']=sec
            sec-=1
            #if sec is larger than negative one run this function again (removes 1 from sec and sets as new text value)
            if sec>-1:
                #only runs even 1000 milliseconds (1 second)
                time.after(1000,tick)
            else: #once sec has passed 0 run this
                #closes countdown window
                root.destroy()
                #closes main window
                window.destroy()
        #starts the countdown
        tick()
        root.mainloop()
#create a new window
window = tkinter.Tk()
#set the window background to hex code '#a1dbcd'
window.configure(background="#a1dbcd")
#set the window title
window.title("Welcome")

photo = tkinter.PhotoImage(data=b64_data)
w = tkinter.Label(window, image=photo)
w.pack()

#create a label for the instructions
lblInst = tkinter.Label(window, text="Please login to continue:", fg="#383a39", bg="#a1dbcd", font=("Helvetica", 16))
#and pack it into the window
lblInst.pack()

#create the widgets for entering a username
lblUsername = tkinter.Label(window, text="Username:", fg="#383a39", bg="#a1dbcd")
entUsername = tkinter.Entry(window)
#and pack them into the window
lblUsername.pack()
entUsername.pack()

#create the widgets for entering a username
lblPassword = tkinter.Label(window, text="Password:", fg="#383a39", bg="#a1dbcd")
entPassword = tkinter.Entry(window)
#and pack them into to the window
lblPassword.pack()
entPassword.pack()

#create a button widget called btn
btn = tkinter.Button(window, text="Login", fg="#a1dbcd", bg="#383a39",command=newWin)
#pack the widget into the window
btn.pack()

#draw the window, and start the 'application'
window.mainloop()