So I am learning how to code with pygame, and I am having a small TypeError. the error is "Integer Argument expected, got float" I think it means that where an integer argument is, a float is given instead. But I am still learning so I am asking you guys for some help. Here is the code:

SOLVED!

it was the "/" symbol. For Python 3 it is supposed to be "//"

1. 
   #! /usr/bin/env python
   
   # Move a single pixel around the screen without scrashing against the borders. 
   
   import pygame
   
   # Window dimensions
   width = 640
   height = 400
   
   # Position of the pixel
   x = width / 2
   y = height / 2
   
   # Direction of the pixel
   dir_x = 0
   dir_y = -1
   
   screen = pygame.display.set_mode((width, height))
   clock = pygame.time.Clock()
   running = True 
   
   while running:
   	x += dir_x
   	y += dir_y
   
   	if x <= 0 or x >= width or y <= 0 or y >= height:
   		print ("Crash!")
   		running = False
   
   	for event in pygame.event.get():
   		if event.type == pygame.QUIT:
   			running = False
   
   		elif event.type == pygame.KEYDOWN:
   			if event.key == pygame.K_UP:
   				dir_x = 0
   				dir_y = -1
   
   			elif event.key == pygame.K_DOWN:
   				dir_x = 0
   				dir_y = 1
   
   			elif event.key == pygame.K_LEFT:
   				dir_x = -1
   				dir_y = 0 
   
   			elif event.key == pygame.K_RIGHT:
   				dir_x = 1 
   				dir_y = 0
   
   	screen.fill((0,0,0))
   	screen.set_at((x, y), (255,255,255))
   
   	pygame.display.flip()
   	clock.tick(120)
   
   

Think you guys can help me?