
def encrypter(string,key):
	# cache = {'a':97,'b':98,'c':99,'d':100,'e':101,'f':102,'g':103,'h':104,'i':105,'j':106,'k':107,
	# 		'l':108,'m':109,'n':110,'o':111,'p':112,'q':113,'r':114,'s':115,'t':116,'u':117,'v':118,
	# 		'w':119,'x':120,'y':121,'z':122}
	result = []
	for alpha in string:
		new = ord(alpha)
		new+=key
		if new<=122:
			result.append(chr(new))
		else:
			result.append(chr(96+(new%122)))
	return "".join(result)

s = encrypter("xyz",2)
print(s)

