py平方根+一个数组里面只有一个数出现一次

#!/usr/bin/python
def fun(x,y):
	res=x*y
	res_sqrt=res**0.5
	return res_sqrt
	


rest=fun(4.3,4.3)
print(rest)

	
	

		def findAppearOne(array): 
	

	

		count={} 
	

	

		for i in array: 
	

	

		if i not in count: 
	

	

		count[i]=1 
	

	

		else: 
	

	

		count[i]+=1 
	

	

		res=[] 
	

	

		for i in array: 
	

	

		if count[i]==1: 
	

	

		res.append(i) 
	

	

		print(ls) 
	

	

		a=(1,2,2,3,3,4,4) 
	

	

		findAppearOne(a)