pythonでゲームを作っています

Question

  File "<stdin>", line 1, in <module>
NameError: name 'p154' is not defined

解決方法を教えてください

"""cave - Copyright 2016 Kenichiro Tanaka """
import sys
from random import randint
import pygame
from pygame.locals import QUIT,Rect,KEYDOWXN,K_SPACE

pygame.init()
pygame.key.set_repeat(5,5)
SURFACE = pygame.display.set_mode((800,600))
FPSCLOCK = pygame.time.Clock()

def main():
""" メインルーチン """
walls = 80
ship_y = 250
velocity = 0
score = 0
slope = randint(1,6)
sysfont = pygame.font.SysFont(None,36)
ship_image = pygame.image.load("ship.png")
bang_image = pygame.image.load("bang.png")
holes = []
for xpos in range(walls):
holes.append(Rect(xpos * 10, 100, 10, 400))
game_over = False

while True:
	is_space_down = False
	for event in pygame.event.get():
		if event.type == QUIT:
			pygame.quit()
			sys.exit()
		elit event.type == KEYDOWN:
			if event.key == K_SPACE:
				is_space_down = True

	#時機を移動
	if not game_over:
		score += 10
		velocity += -3 if is_space_down else 3
		ship_y += velocity

		#洞窟をスクロール
		edge = holse[-1].copy()
		test = edge.move(0,slope)
		if test. top <= 0 or test.bottem >= 600:
			slope = randint(1,6) * (-1 if slope > 0 else 1
			edge.inflate_ip(0, -20)
		edge.move_ip(10,slope)
		holes.append(edge)
		del holse[0]
		holse = [x.move(-10,0) for x in holse]

		#衝突?
		if holse[0].top > ship_y or ＼
			holse[0].bottom <ship_y + 80:
			game_over = True

	#描画
	SURFACE.fill((0, 255, 0))
	for hole in holse:
		pygame.draw.rect(SURFACE, (0, 0, 0), hole)
	SURFACE.blit(ship_image, (0, ship_y))
	score_image = sysfont.remder("score is {}".format(score),
									True, (0, 0, 225))
	SURFACE.blit(score_image, (600, 20))

	if game_over:
		SURFACE.blit(bang_image, (0, ship_y-40))

	pygame.display.update()
	FPSCLOCK.tick(15)

if name == 'main':
main()