字符串操作

stuNum = '201709090060'
print('年级是：'+stuNum[0:4])
print('专业编号是：'+stuNum[4:9])
print('序号是：'+stuNum[-3:])

IDNo= '440509199906180026'
print('省市是：'+IDNo[0:2])
print('生日是：'+IDNo[-8:-4])
print('性别是：'+IDNo[-2])
id='440509199906180026'
area=id[0:6]
birthday=id[6:18]
sex=id[-2]

print(area,birthday,sex)

if(int(sex) % 2==0):
    print('girl')
else:
    print('boy')

print(ord('+'))
print(chr(9800))
print(chr(9801))
for i in range(12):
    print(9800+i,chr(9800+i))

s = input('密文：')
for c in s:
    print(chr(ord(c)-3),end='')

s = input('明文：')
for c in s:
    print(chr(ord(c)+3),end='')