Tkinter Game

import tkinter

#...and for creating random numbers.

import random

#the list of possible colour.

colours = ['Red','Blue','Green','Pink','Black','Yellow','Orange','White','Purple','Brown']

#the player's score, initially 0.

score=0

#the game time left, initially 30 seconds.

timeleft=30

#a function that will start the game.

def startGame(event):

    #if there's still time left...

    if timeleft == 30:

        #start the countdown timer.

        countdown()

    #run the function to choose the next colour.

    nextColour()

#function to choose and display the next colour.

def nextColour():

    #use the globally declared 'score' and 'play' variables above.

    global score

    global timeleft

    #if a game is currently in play...

    if timeleft > 0:

        #...make the text entry box active.

        e.focus_set()

        #if the colour typed is equal to the colour of the text...

        if e.get().lower() == colours[1].lower():

            #...add one to the score.

            score += 1

        #clear the text entry box.

        e.delete(0, tkinter.END)

        #shuffle the list of colours.

        random.shuffle(colours)

        #change the colour to type, by changing the text _and_ the colour to a random colour value

        label.config(fg=str(colours[1]), text=str(colours[0]))

        #update the score.

        scoreLabel.config(text="Score: " + str(score))

#a countdown timer function. 

def countdown():

    #use the globally declared 'play' variable above.

    global timeleft

    #if a game is in play...

    if timeleft > 0:

        #decrement the timer.

        timeleft -= 1

        #update the time left label.

        timeLabel.config(text="Time left: " + str(timeleft))

        #run the function again after 1 second.

        timeLabel.after(1000, countdown)

#create a GUI window.

root = tkinter.Tk()

#set the title.

root.title("TTCANTW")

#set the size.

root.geometry("375x200")

#add an instructions label.

instructions = tkinter.Label(root, text="Type in the colour of the words, and not the word text!", font=('Helvetica', 12))

instructions.pack()

#add a score label.

scoreLabel = tkinter.Label(root, text="Press enter to start", font=('Helvetica', 12))

scoreLabel.pack()

#add a time left label.

timeLabel = tkinter.Label(root, text="Time left: " + str(timeleft), font=('Helvetica', 12))

timeLabel.pack()

#add a label for displaying the colours.

label = tkinter.Label(root, font=('Helvetica', 60))

label.pack()

#add a text entry box for typing in colours.

e = tkinter.Entry(root)

#run the 'startGame' function when the enter key is pressed.

root.bind('<Return>', startGame)

e.pack()

#set focus on the entry box.

e.focus_set()

#start the GUI

root.mainloop()