Mine

import pygame, os, sys
from pygame.locals import *

#starting x and y cords for blocks to start at
sx = 183
sy = 24
#load the block images
L = pygame.image.load('L.bmp')
straight = pygame.image.load('straight.bmp')

#Create and initialize the clock
clock = pygame.time.Clock()

#initialize pygame
pygame.init()
screen = pygame.display.set_mode((400, 600))
pygame.display.set_caption('!!TETRIS REVENGE!!')
#background
background = pygame.image.load('back.bmp')
screen.blit(background,(0,0))

#function to handle block creation and movement
def blockfall():
	global sx
	global sy
	screen.blit(L,(sx,sy))
	if sy < 560:
		sy = sy + 1
	return sx
	
#Function to handle all input
def iput():
	for event in pygame.event.get():
		if event.type == pygame.QUIT:
			sys.exit()
		#if event.type == pygame.KEYDOWN:
			K_LEFT = sx = sx - 1
			K_RIGHT = sx = sx + 1

#main loop
while True:
	iput()
	blockfall()
	pygame.display.flip()
	clock.tick(70)