{"id":1046884,"date":"2024-12-31T13:37:38","date_gmt":"2024-12-31T05:37:38","guid":{"rendered":""},"modified":"2024-12-31T13:37:45","modified_gmt":"2024-12-31T05:37:45","slug":"python%e5%a6%82%e4%bd%95%e8%be%93%e5%87%baa%e7%9a%84ascii%e7%a0%81%e5%80%bc","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1046884.html","title":{"rendered":"python\u5982\u4f55\u8f93\u51faa\u7684ascii\u7801\u503c"},"content":{"rendered":"

\"python\u5982\u4f55\u8f93\u51faa\u7684ascii\u7801\u503c\"<\/p>\n

\u5728Python\u4e2d\uff0c\u8f93\u51fa\u5b57\u7b26'a'\u7684ASCII\u7801\u503c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u51fd\u6570ord()\u3002<\/strong><\/p>\n<\/p>\n

\u4f7f\u7528ord()\u51fd\u6570\u3001\u793a\u4f8b\u5982\u4e0b\uff1a<\/strong><\/p>\n<\/p>\n

ascii_value = ord('a')<\/p>\n
print(ascii_value)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0cord('a')<\/code>\u51fd\u6570\u4f1a\u8fd4\u56de\u5b57\u7b26'a'\u7684ASCII\u7801\u503c\uff0c\u5e76\u5c06\u5176\u8d4b\u503c\u7ed9\u53d8\u91cfascii_value<\/code>\u3002\u7136\u540e\uff0cprint(ascii_value)<\/code>\u4f1a\u6253\u5370\u51faASCII\u7801\u503c97\u3002<\/p>\n<\/p>\n
\n
\u4e00\u3001Python\u4e2d\u7684ASCII\u7801\u6982\u8ff0<\/h3>\n<\/p>\n
ASCII\u7801\uff08American Standard Code for Information Interchange\uff09\u662f\u4e00\u79cd\u5b57\u7b26\u7f16\u7801\u6807\u51c6\uff0c\u7528\u4e8e\u8868\u793a\u6587\u672c\u4e2d\u7684\u5b57\u7b26\u3002\u6bcf\u4e2a\u5b57\u7b26\u5bf9\u5e94\u4e00\u4e2a\u552f\u4e00\u7684\u6574\u6570\u503c\uff0c\u79f0\u4e3a\u5176ASCII\u7801\u503c\u3002\u5728Python\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5185\u7f6e\u51fd\u6570ord()<\/code>\u548cchr()<\/code>\u6765\u5904\u7406ASCII\u7801\u3002<\/p>\n<\/p>\n
    \n
  • ord()\u51fd\u6570<\/strong>\uff1a\u6b64\u51fd\u6570\u63a5\u53d7\u4e00\u4e2a\u5b57\u7b26\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u8be5\u5b57\u7b26\u7684ASCII\u7801\u503c\u3002<\/li>\n
  • chr()\u51fd\u6570<\/strong>\uff1a\u6b64\u51fd\u6570\u63a5\u53d7\u4e00\u4e2a\u6574\u6570\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u8be5\u6574\u6570\u5bf9\u5e94\u7684\u5b57\u7b26\u3002<\/li>\n<\/ul>\n
    \u4e8c\u3001\u4f7f\u7528ord()\u51fd\u6570\u83b7\u53d6ASCII\u7801<\/h3>\n<\/p>\n
    \u5728Python\u4e2d\uff0c\u83b7\u53d6\u5b57\u7b26\u7684ASCII\u7801\u503c\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u4f7f\u7528ord()<\/code>\u51fd\u6570\u3002\u4f8b\u5982\uff0c\u83b7\u53d6\u5b57\u7b26'a'\u7684ASCII\u7801\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n
    ascii_value = ord('a')<\/p>\n
    print(ascii_value)  # \u8f93\u51fa 97<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u540c\u6837\u5730\uff0c\u6211\u4eec\u53ef\u4ee5\u83b7\u53d6\u5176\u4ed6\u5b57\u7b26\u7684ASCII\u7801\u503c\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
    ascii_value = ord('A')<\/p>\n
    print(ascii_value)  # \u8f93\u51fa 65<\/p>\n
    ascii_value = ord('0')<\/p>\n
    print(ascii_value)  # \u8f93\u51fa 48<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u4e09\u3001\u4f7f\u7528chr()\u51fd\u6570\u83b7\u53d6\u5b57\u7b26<\/h3>\n<\/p>\n
    \u6211\u4eec\u4e5f\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528chr()<\/code>\u51fd\u6570\uff0c\u6839\u636eASCII\u7801\u503c\u83b7\u53d6\u5bf9\u5e94\u7684\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u83b7\u53d6ASCII\u7801\u503c97\u5bf9\u5e94\u7684\u5b57\u7b26\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n
    character = chr(97)<\/p>\n
    print(character)  # \u8f93\u51fa 'a'<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u540c\u6837\u5730\uff0c\u6211\u4eec\u53ef\u4ee5\u83b7\u53d6\u5176\u4ed6ASCII\u7801\u503c\u5bf9\u5e94\u7684\u5b57\u7b26\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
    character = chr(65)<\/p>\n
    print(character)  # \u8f93\u51fa 'A'<\/p>\n
    character = chr(48)<\/p>\n
    print(character)  # \u8f93\u51fa '0'<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u56db\u3001\u5728\u5b57\u7b26\u4e32\u4e2d\u904d\u5386\u5b57\u7b26\u548cASCII\u7801<\/h3>\n<\/p>\n
    \u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u904d\u5386\u5b57\u7b26\u4e32\u4e2d\u7684\u6bcf\u4e2a\u5b57\u7b26\uff0c\u5e76\u83b7\u53d6\u6bcf\u4e2a\u5b57\u7b26\u7684ASCII\u7801\u503c\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
    text = "Hello, World!"<\/p>\n
    ascii_values = [ord(char) for char in text]<\/p>\n
    print(ascii_values)<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u4e0a\u8ff0\u4ee3\u7801\u5c06\u8f93\u51fa\u5b57\u7b26\u4e32"Hello, World!"\u4e2d\u6bcf\u4e2a\u5b57\u7b26\u7684ASCII\u7801\u503c\u5217\u8868\uff1a<\/p>\n<\/p>\n
    [72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33]<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u540c\u6837\u5730\uff0c\u6211\u4eec\u53ef\u4ee5\u4eceASCII\u7801\u503c\u5217\u8868\u4e2d\u91cd\u5efa\u539f\u59cb\u5b57\u7b26\u4e32\uff1a<\/p>\n<\/p>\n
    ascii_values = [72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33]<\/p>\n
    text = ''.join(chr(value) for value in ascii_values)<\/p>\n
    print(text)  # \u8f93\u51fa "Hello, World!"<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u4e94\u3001\u4f7f\u7528ASCII\u7801\u8fdb\u884c\u52a0\u5bc6\u548c\u89e3\u5bc6<\/h3>\n<\/p>\n
    ASCII\u7801\u8fd8\u53ef\u4ee5\u7528\u4e8e\u7b80\u5355\u7684\u52a0\u5bc6\u548c\u89e3\u5bc6\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u51ef\u6492\u5bc6\u7801\uff08Caesar Cipher\uff09\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u52a0\u5bc6\u548c\u89e3\u5bc6\u3002\u51ef\u6492\u5bc6\u7801\u662f\u4e00\u79cd\u66ff\u6362\u52a0\u5bc6\u65b9\u6cd5\uff0c\u901a\u8fc7\u5c06\u6bcf\u4e2a\u5b57\u6bcd\u79fb\u52a8\u56fa\u5b9a\u7684\u4f4d\u6570\u6765\u52a0\u5bc6\u6d88\u606f\u3002<\/p>\n<\/p>\n
    \u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528\u51ef\u6492\u5bc6\u7801\u52a0\u5bc6\u548c\u89e3\u5bc6\u5b57\u7b26\u4e32\uff1a<\/p>\n<\/p>\n
    def caesar_cipher_encrypt(text, shift):<\/p>\n
        encrypted_text = ''<\/p>\n
        for char in text:<\/p>\n
            if char.isalpha():<\/p>\n
                shifted = ord(char) + shift<\/p>\n
                if char.islower():<\/p>\n
                    if shifted > ord('z'):<\/p>\n
                        shifted -= 26<\/p>\n
                    encrypted_text += chr(shifted)<\/p>\n
                elif char.isupper():<\/p>\n
                    if shifted > ord('Z'):<\/p>\n
                        shifted -= 26<\/p>\n
                    encrypted_text += chr(shifted)<\/p>\n
            else:<\/p>\n
                encrypted_text += char<\/p>\n
        return encrypted_text<\/p>\n
    def caesar_cipher_decrypt(encrypted_text, shift):<\/p>\n
        decrypted_text = ''<\/p>\n
        for char in encrypted_text:<\/p>\n
            if char.isalpha():<\/p>\n
                shifted = ord(char) - shift<\/p>\n
                if char.islower():<\/p>\n
                    if shifted < ord('a'):<\/p>\n
                        shifted += 26<\/p>\n
                    decrypted_text += chr(shifted)<\/p>\n
                elif char.isupper():<\/p>\n
                    if shifted < ord('A'):<\/p>\n
                        shifted += 26<\/p>\n
                    decrypted_text += chr(shifted)<\/p>\n
            else:<\/p>\n
                decrypted_text += char<\/p>\n
        return decrypted_text<\/p>\n
    text = "Hello, World!"<\/p>\n
    shift = 3<\/p>\n
    encrypted_text = caesar_cipher_encrypt(text, shift)<\/p>\n
    print("Encrypted:", encrypted_text)  # \u8f93\u51fa "Khoor, Zruog!"<\/p>\n
    decrypted_text = caesar_cipher_decrypt(encrypted_text, shift)<\/p>\n
    print("Decrypted:", decrypted_text)  # \u8f93\u51fa "Hello, World!"<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u516d\u3001\u5904\u7406\u975eASCII\u5b57\u7b26<\/h3>\n<\/p>\n
    \u867d\u7136ASCII\u7801\u6db5\u76d6\u4e86\u5927\u90e8\u5206\u82f1\u8bed\u5b57\u7b26\uff0c\u4f46\u5b83\u4e0d\u5305\u62ec\u5176\u4ed6\u8bed\u8a00\u7684\u5b57\u7b26\u548c\u7279\u6b8a\u7b26\u53f7\u3002\u4e3a\u4e86\u5904\u7406\u8fd9\u4e9b\u5b57\u7b26\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Unicode\u7f16\u7801\u3002Python 3\u9ed8\u8ba4\u4f7f\u7528UTF-8\u7f16\u7801\uff0c\u8fd9\u4f7f\u5f97\u5904\u7406\u975eASCII\u5b57\u7b26\u53d8\u5f97\u66f4\u52a0\u5bb9\u6613\u3002<\/p>\n<\/p>\n
    \u4f8b\u5982\uff0c\u83b7\u53d6\u975eASCII\u5b57\u7b26\u7684Unicode\u7801\u70b9\uff1a<\/p>\n<\/p>\n
    unicode_value = ord('\u4f60')<\/p>\n
    print(unicode_value)  # \u8f93\u51fa 20320<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u540c\u6837\u5730\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636eUnicode\u7801\u70b9\u83b7\u53d6\u5b57\u7b26\uff1a<\/p>\n<\/p>\n
    character = chr(20320)<\/p>\n
    print(character)  # \u8f93\u51fa '\u4f60'<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u4e03\u3001\u6269\u5c55\uff1a\u5b57\u7b26\u4e32\u7f16\u7801\u4e0e\u89e3\u7801<\/h3>\n<\/p>\n
    \u5728\u5904\u7406\u5b57\u7b26\u548c\u5b57\u7b26\u4e32\u65f6\uff0c\u4e86\u89e3\u7f16\u7801\u548c\u89e3\u7801\u7684\u6982\u5ff5\u975e\u5e38\u91cd\u8981\u3002\u7f16\u7801\u662f\u5c06\u5b57\u7b26\u8f6c\u6362\u4e3a\u5b57\u8282\u5e8f\u5217\u7684\u8fc7\u7a0b\uff0c\u800c\u89e3\u7801\u662f\u5c06\u5b57\u8282\u5e8f\u5217\u8f6c\u6362\u4e3a\u5b57\u7b26\u7684\u8fc7\u7a0b\u3002Python\u63d0\u4f9b\u4e86\u591a\u79cd\u7f16\u7801\u548c\u89e3\u7801\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
    \u4f8b\u5982\uff0c\u5c06\u5b57\u7b26\u4e32\u7f16\u7801\u4e3a\u5b57\u8282\u5e8f\u5217\uff1a<\/p>\n<\/p>\n
    text = "Hello, \u4e16\u754c!"<\/p>\n
    encoded_text = text.encode('utf-8')<\/p>\n
    print(encoded_text)  # \u8f93\u51fa b'Hello, \\xe4\\xb8\\x96\\xe7\\x95\\x8c!'<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u5c06\u5b57\u8282\u5e8f\u5217\u89e3\u7801\u4e3a\u5b57\u7b26\u4e32\uff1a<\/p>\n<\/p>\n
    decoded_text = encoded_text.decode('utf-8')<\/p>\n
    print(decoded_text)  # \u8f93\u51fa "Hello, \u4e16\u754c!"<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u901a\u8fc7\u4e86\u89e3\u7f16\u7801\u548c\u89e3\u7801\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u597d\u5730\u5904\u7406\u5404\u79cd\u5b57\u7b26\u96c6\u548c\u6587\u672c\u6570\u636e\u3002<\/p>\n<\/p>\n
    \u516b\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
    \u5728Python\u4e2d\uff0c\u8f93\u51fa\u5b57\u7b26'a'\u7684ASCII\u7801\u503c\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u4f7f\u7528\u5185\u7f6e\u51fd\u6570ord()<\/code>\u3002\u901a\u8fc7\u4e86\u89e3ord()<\/code>\u548cchr()<\/code>\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u5904\u7406\u5b57\u7b26\u4e0e\u5176\u5bf9\u5e94\u7684ASCII\u7801\u503c\u3002\u6b64\u5916\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528ASCII\u7801\u8fdb\u884c\u5404\u79cd\u5b57\u7b26\u4e32\u64cd\u4f5c\uff0c\u5982\u904d\u5386\u3001\u52a0\u5bc6\u548c\u89e3\u5bc6\u3002\u5bf9\u4e8e\u975eASCII\u5b57\u7b26\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Unicode\u7f16\u7801\u8fdb\u884c\u5904\u7406\u3002\u638c\u63e1\u8fd9\u4e9b\u6280\u5de7\u5c06\u6709\u52a9\u4e8e\u6211\u4eec\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u66f4\u597d\u5730\u5904\u7406\u6587\u672c\u6570\u636e\u3002<\/p>\n<\/p>\n
    \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
     \u5982\u4f55\u5728Python\u4e2d\u83b7\u53d6\u5b57\u7b26\u7684ASCII\u7801\u503c\uff1f<\/strong>
    \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684ord()<\/code>\u51fd\u6570\u6765\u83b7\u53d6\u5b57\u7b26\u7684ASCII\u7801\u503c\u3002\u53ea\u9700\u5c06\u5b57\u7b26\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9ord()<\/code>\uff0c\u4f8b\u5982\uff1aord('a')<\/code>\u5c06\u8fd4\u56de97\uff0c\u8fd9\u662f\u5b57\u7b26'a'\u7684ASCII\u7801\u503c\u3002<\/p>\n
    \u662f\u5426\u53ef\u4ee5\u5c06\u591a\u4e2a\u5b57\u7b26\u7684ASCII\u7801\u503c\u540c\u65f6\u8f93\u51fa\uff1f<\/strong>
    \u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u904d\u5386\u5b57\u7b26\u4e32\u4e2d\u7684\u6bcf\u4e2a\u5b57\u7b26\uff0c\u5e76\u5229\u7528ord()<\/code>\u51fd\u6570\u8f93\u51fa\u5176ASCII\u7801\u503c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u8fd9\u6837\u5b9e\u73b0\uff1a  <\/p>\n
    string = "abc"\nascii_values = [ord(char) for char in string]\nprint(ascii_values)  # \u8f93\u51fa: [97, 98, 99]\n<\/code><\/pre>\n
    \u8fd9\u6837\u53ef\u4ee5\u83b7\u53d6\u5b57\u7b26\u4e32\u4e2d\u6bcf\u4e2a\u5b57\u7b26\u7684ASCII\u7801\u503c\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u4e00\u4e2a\u5217\u8868\u4e2d\u3002<\/p>\n
    \u5728Python\u4e2d\u5982\u4f55\u5c06ASCII\u7801\u503c\u8f6c\u6362\u56de\u5b57\u7b26\uff1f<\/strong>
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