python第二节课作业8题

#凯撒密码
num1=input("")
for data1 in num1:
if "a"<=data1<="z":
print(chr(ord("a")+(ord(data1)-ord("a")+3)%26),end="")
elif "A"<=data1<="Z":
print(chr(ord("A")+(ord(data1)-ord("A")+3)%26),end="")
else:
print(data1,end="")

print("\n3009")