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Color game using Tkinter in Python

Tkinter is widely used for developing GUI applications. Along with applications, we can also use Tkinter GUI to develop games.
Let’s try to make a game using TkinteR. In this game player has to enter color of the word that appears on the screen and hence the score increases by one, the total time to play this game is 30 seconds. Colors used in this game are Red, Blue, Green, Pink, Black, Yellow, Orange, White, Purple and Brown. Interface will display name of different colors in different colors. Player has to identify the color and enter the correct color name to win the game.

Below is the implementation of above game :
# import the modules 
import tkinter 
import random 
# list of possible colour. 
colours = ['Red','Blue','Green','Pink','Black', 
score = 0
# the game time left, initially 30 seconds. 
timeleft = 30
# function that will start the game. 
def startGame(event): 
if timeleft == 30: 
# start the countdown timer. 
# run the function to 
# choose the next colour. 
# 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. 

# if the colour typed is equal 
# to the colour of the text 
if e.get().lower() == colours[1].lower(): 
score += 1
# clear the text entry box. 
e.delete(0, tkinter.END) 
# 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)) 
# Countdown timer function 
def countdown(): 
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) 
# Driver Code 
# create a GUI window 
root = tkinter.Tk() 
# set the title 
# set the size 

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

# add a score label 
scoreLabel = tkinter.Label(root, text = "Press enter to start", 
font = ('Helvetica', 12)) 

# add a time left label 
timeLabel = tkinter.Label(root, text = "Time left: " +
str(timeleft), font = ('Helvetica', 12)) 
# add a label for displaying the colours 
label = tkinter.Label(root, font = ('Helvetica', 60)) 
# 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) 
# set focus on the entry box 
# start the GUI