Então eu encontrei este grande jogo de pong criado por esse cara chamado Ferrari, e me foi dada a tarefa de torná-lo dois jogadores com duas pontuações, mas sem pontuação alta. Eu tentei muitas coisas, exceto quando eu faço um segundo bocado de código que controla os movimentos ou ele é completamente ignorado ou pressionarei o botão para cima que está designado e ele irá subir e não voltará para baixo.

from decimal import Decimal, getcontext
getcontext().prec = 20
import time,random,os,sys
from Tkinter import *
from tkFileDialog import *
import tkFont
import os,sys

## decimal is for numbers and arithmatic that use irrational numbers
## Tkinter is the graphical interface for the program
## tkFont is the window that pops up
## os is operating system
## sys is system


## there are 2 different variables for player 1 and player 2 because one variable is a variable for a number, the other creates the rectangle(the actual paddle)
## these are just variables that represent numbers

refreshrate=100
do = 1
done=0
ballX=320
ballY=240
playerone=180
py2=180
pause=0
up=0
down=0
root = Tk()
root.title("Pong")
c = Canvas(root,width=640,height=480,bg='black')
c.pack()
xc = float(2)
yc = float(random.randint(-3,3))
while(yc==0):
    yc = float(random.randint(-3,3))
ball = c.create_oval(ballX-10,ballY-10,ballX+10,ballY+10,fill='white')
player = c.create_rectangle(610,playerone,625,playerone+120,fill='blue')
playertwo = c.create_rectangle(15,playerone,30,playerone+120,fill='blue')
c.create_rectangle(318,0,322,480,fill='white')
c.create_rectangle(318,0,322,30,fill='white')
score = 0
escore= 0
lives = 5
font = tkFont.Font(family = "Book Antiqua", size = 15, weight = "bold")

## to change the keys in which you press to control the paddles, change the letter or arrow key between the quotation marks next to str a   
## player1 controls

def up(event):
    global playerone, player, py2, playertwo, high, low
    up = 1
def down(event):
    global playerone, player, py2, playertwo, high, low
    down = 1
def escape(event):
    global do, lives
    lives = -1
    do = 0
    root.quit
    root.quit()
def onkeyrelease(event):
    global up, down, do, lives, pause
    key = event.keysym
    if (str(key)=="w"):
        up = 0
    if (str(key)=="s"):
        down = 0
    if (str(key)=="Escape" and done==1):
        root.quit
        do = 0
        lives = -1
        root.quit()
    if (str(key)=="p"):
        if(pause==1):
            pause=0
        elif(pause==0):
            pause=1
def buttoninit():
    root.bind("<w>",up)
    root.bind("<s>",down)
    root.bind("`",escape)
    root.bind('<KeyRelease>', onkeyrelease)
buttoninit()

## player2 controls

def high(event):
    global playerone, player, py2, playertwo, up, down
    up = 1
def low(event):
    global playerone, player, py2, playertwo, up, down
    down = 1
def leave(event):
    global do, lives
    lives = -1
    do = 0
    root.quit
    root.quit()
def offkeyrelease(event):
    global up, down, do, lives, pause
    key = event.keysym
    if (str(key)=="Up"):
        up = 0
    if (str(key)=="Down"):
        down = 0
    if (str(key)=="Escape" and done==1):
        root.quit
        do = 0
        lives = -1
        root.quit()
    if (str(key)=="p"):
        if(pause==1):
            pause=0
        elif(pause==0):
            pause=1
def buttononit():
    root.bind("<Up>",high)
    root.bind("<Down>",low)
    root.bind("`",leave)
    root.bind('<KeyRelease>', offkeyrelease)
buttononit()


c.create_text(475,10,text='Lives:',fill='white',font=font)
livestext = c.create_text(525,10,text=lives,fill='white',font=font)
c.create_text(475,25,text='Score:',fill='white',font=font)
scoretext = c.create_text(525,25,text=score,fill='white',font=font)
print "Push 'p' to pause"
var=1

while (do):
    ##  player movement controls
    if(playerone>0 and up==1 and down!=1 and pause==0):
        playerone=playerone-5
    if(playerone<360 and down==1 and up!=1 and pause==0):
        playerone=playerone+5

##  player collision detection
    if(ballX>=605 and ballY+10>=playerone and ballX<=616 and ballY+10>=playerone and ballY-10<=playerone+120):
        xc*=-1
        ballX=605
        if(xc>-10):
            xc=float(xc)-float(0.4)
        if(yc>0):
            yc=float(random.randint(15,70))
            yc=float(yc)/float(10)
        else: 
            yc=float(random.randint(-70,-15))
            yc=float(yc)/float(10)

##  playertwo movement controls
        if (playertwo>0 and high==1 and low!=1 and pause==0):
            playertwo=playertwo+5
        if (playertwo<360 and low==1 and high!=1 and pause==0):
            playertwo=playertwo-5

##  playertwo collision detection
    if(ballX<=40 and ballX>=29 and ballY+py2 and ballY-10<=py2+120):
        xc*=-1
        ballX=40
        if(xc<10):
            xc=float(xc)+float(0.4)
        if(yc>0):
            yc=float(random.randint(15,70))
            yc=float(yc)/float(10)
        else:
            yc=float(random.randint(-70,-15))
            yc=float(yc)/float(10)

##  left and right bounds collision detection (aka missed paddle)
    if(ballX>=630 and xc>0):
        ballX=320
        ballY=240
        xc = 2
        yc = random.randint(-3,3)
        while(yc==0):
            yc = random.randint(-3,3)
        lives = lives-1
        escore=escore+1
    if(ballX<=10 and xc<0):
        ballX=320
        ballY=240
        xc = 2
        yc = random.randint(-3,3)
        while(yc==0):
            yc = random.randint(-3,3)
        score=score+1

##  top and bottom bounds colliison detection
    if(playerone<0):
        playerone=0
    if(playerone>360):
        playerone=360
    if(ballY>=470 or ballY<=10):
        yc*=-1

##  AI(artificial intelligence(ball)) movement controls
    if(py2+60<ballY and py2<360 and xc<0 and pause==0):
        py2=py2+4
    if(py2+60>ballY and py2>0 and xc<0 and pause==0):
        py2=py2-4
    if(pause==0):
        ballX=ballX+xc
        ballY=ballY+yc
    c.delete(ball)
    ball = c.create_oval(ballX-10,ballY-10,ballX+10,ballY+10,fill='white')
    c.delete(player)
    player = c.create_rectangle(610,playerone,625,playerone+120,fill='blue')
    c.delete(playertwo)

# to change the game to single player, remove the playerone's in the following line and replace them with py2's
# this are  the coordinates for the paddle
# the first playerone, tracks the position of the thing that the paddle is following
# 1#= how wide it is, 2# tracks the other object, 3# the width, 4# how tall the paddle is, 5# the color

    playertwo = c.create_rectangle(15, playerone ,30,  playerone + 120 ,fill='blue')

    c.delete(livestext)
    livestext = c.create_text(525,10,text=lives,fill='white',font=font)
    c.delete(scoretext)
    scoretext = c.create_text(525,25,text=score,fill='white',font=font)
    c.update()
    time.sleep(Decimal("1")/Decimal("100"))
    if(lives==0):
        do=0
        if(score > 0):
            print score
        done = 1
    try:
        c.update()
    except:
        print "Error"
        root.quit
    while(lives==0):
        c.update()
try:
    c.update()
except:
    print "Error!!!"
    root.quit