python - Trying to encrypt string to ASCII -

python - Trying to encrypt string to ASCII -

this have not sure going wrong:

import sys message = input("enter message here:") key = input("enter key 1-100:") letter in message: char = ord(letter) if (char + key) < 32: encryptedchar = ((char - key) + 127) - 32 else: encryptedchar = (char - key) sys.stdout.write(chr(encryptedchar)) print(encryptedchar,end=" ")

i'm receiving error:

typeerror: unsupported operand type(s) +: 'int' , 'str')

key = int(input("enter key 1-100:"))

input string, need cast integer.

after casting int code runs fine:

enter message here:foobar come in key 1-100:10 \92e101e101x88w87h104

python encryption