def is_power(x, y):
	#your code here
	return ____

def list_reverse(ls):
	#your code here
	return ____

def list_primes(n):
	#your code here
	return ____

def filter_list(xmin, xmax, ymin, ymax):
	#your code here
	return ____

def list_overlap(x):
	#your code here
	return ____