Python: Emoji Timer

import os
from random import shuffle,randrange
from guizero import App, Box, Picture, Text, info, PushButton

# set the path to the emoji folder on your computer
emojis_dir = "emojis"
# create a list of the locations of the emoji images
emojis = [os.path.join(emojis_dir, f) for f in os.listdir(emojis_dir) if os.path.isfile(os.path.join(emojis_dir, f))]
# shuffle the emojis

blank = "25fb.png"
start = "25b6.png"
alert = "26a0.png"
correct = "2705.png"

gameOn = False

app = App("Emoji Match Game",width=720, height=480)

def doTime():
    if (int(timeleft.value)>0 and feedback.value != "Match Found!"):
        timeleft.value=str(int(timeleft.value)-1)
    else:
        timeleft.value=str(int(timeleft.value)-0)

def initialicon():
    leftset=[]
    rightset=[]

    shuffle(emojis)

    for count in range(0,9):
        leftset.append(emojis[count])
        rightset.append(emojis[count+8])

    shuffle(leftset)
    shuffle(rightset)

    myemojis = []

    for count in range(0,9):
        myemojis.append(leftset[count])

    myemojis.append(blank)
    myemojis.append(blank)

    for count in range(0,9):
        myemojis.append(rightset[count])

    return(myemojis)

def doStart():
    if int(roundno.value)<10:
        myemojis = initialicon()
        for count in range(0,20):
            pictures[count].image = myemojis[count]
        feedback.value=""
        roundno.value=str(int(roundno.value)+1)
        timeleft.value=str(int(30))
        startbutton.hide()




def testmatch():
    if (pictures[9].image == pictures[10].image):
        #info("Match","Match Found!")
        feedback.value= "Match Found!"
        emojis.remove(pictures[9].value)
        if (int(roundno.value)%2==1):
            P1_score.value=str(int(P1_score.value)+10+int(timeleft.value))
            startbutton.bg=(127,255,255)
            startbutton.text="Player 2 Start"
        else:
            P2_score.value=str(int(P2_score.value)+10+int(timeleft.value))
            startbutton.bg=(255,127,255)
            startbutton.text="Player 1 Start"
        if (int(roundno.value) == 10):
            if (int(P1_score.value)>int(P2_score.value)):
                winner = "winner is Player 1"
            elif (int(P1_score.value)<int(P2_score.value)):
                winner = "winner is Player 2"
            else:
                winner = "result is a draw"
            info("The End","Well done, the "+ winner)
        else:
            startbutton.show()
    else:
        if((pictures[9].image != blank) and (pictures[10].image != blank)):
            feedback.value="Not a Match!"
            if (int(roundno.value)%2==1):
                P1_score.value=str(int(P1_score.value)-1)
            else:
                P2_score.value=str(int(P2_score.value)-1)


def leftselected(event_data):
    pic_clicked = event_data.widget
    pictures[9].image = pic_clicked.image
    testmatch()

def rightselected(event_data):
    pic_clicked = event_data.widget
    pictures[10].image = pic_clicked.image
    testmatch()

myemojis = initialicon()

# create a box to house the grid
pictures_box = Box(app, layout="grid")

header=Text(pictures_box, text="Emoji Match Game", size=28, grid=[0,0,8,1])

# create an empty list to which pictures will be added
pictures = []
for x in range(0,3):
    for y in range(1,4):
        # put the pictures into the list
        picture = Picture(pictures_box, grid=[x,y])
        pictures.append(picture)

picture = Picture(pictures_box, grid=[3,4])
pictures.append(picture)
picture = Picture(pictures_box, grid=[4,4])
pictures.append(picture)

for x in range(5,8):
    for y in range(1,4):
        # put the pictures into the list
        picture = Picture(pictures_box, grid=[x,y])
        pictures.append(picture)
# for each picture in the list
counter = 0

for picture in pictures:
    # make the picture a random emoji
    pictures[counter].image = blank
    counter=counter+1

P1_label=Text(pictures_box, text="Player 1\nScore:", size=10, align="right",grid=[0,4])
P1_score=Text(pictures_box, text="0", size=20, align="left", grid=[1,4])
P2_label=Text(pictures_box, text="Player 2\nScore:", size=10, align="right",grid=[6,4])
P2_score=Text(pictures_box, text="0", size=20, align="left", grid=[7,4])

time_label=Text(pictures_box, text="Points:", size=8,align="right",grid=[3,1])
timeleft=Text(pictures_box, text="30", size=8,align="left",grid=[4,1])
round_label=Text(pictures_box, text="Round:", align="right",size=8,grid=[3,3])
roundno=Text(pictures_box, text="0", size=8,align="left",grid=[4,3])

feedback=Text(pictures_box, text="",size=14, align="bottom" , grid=[3,5,2,1])

startbutton = PushButton(pictures_box, text="Player 1 Start", grid=[3,2,2,1])
startbutton.bg=(255,128,255)
startbutton.when_clicked = doStart

for count in range(0,9):
    pictures[count].when_clicked = leftselected

for count in range(11,20):
    pictures[count].when_clicked = rightselected

timeleft.repeat(1000,doTime)

app.display()