实现凯撒加密，输入明文和一个数字，输出密文

plain_text = input('请输入明文：') shift = int(input('请输入数字：')) cipher_text = '' for char in plain_text: if char.isalpha(): # 将字符转换为ASCII码，加上偏移量，再将结果转换为字符 new_char_code = ord(char) + shift if char.islower() and new_char_code > ord('z'): new_char_code -= 26 elif char.isupper() and new_char_code > ord('Z'): new_char_code -= 26 cipher_text += chr(new_char_code) else: cipher_text += char print('密文为：', cipher_text)