code: def get_readable_filesize(size):
  	
  	if(size < 1024):
  		return str(size)+' bytes'
  	temp = size/1024.0
  	level = 1
  	while(temp >= 1024 and level< 3):
  		temp = temp/1024
  		level += 1
  	if(level == 1):
  		return str(round(temp,2))+' KB'
  	elif(level == 2):
  		return str(round(temp,2))+' MB'
  	else:
  		return str(round(temp,2))+' GB'
docs: get_readable_filesize(size) -> filesize -- return human readable 
  	filesize from given size in bytes.