{"id":2189,"date":"2026-04-25T10:14:38","date_gmt":"2026-04-25T02:14:38","guid":{"rendered":"http:\/\/www.preluna.xyz\/?p=2189"},"modified":"2026-04-25T10:14:39","modified_gmt":"2026-04-25T02:14:39","slug":"isalnum%ef%bc%8cisalpha%ef%bc%8cisdigit%ef%bc%8cislower%ef%bc%8cisupper","status":"publish","type":"post","link":"http:\/\/www.preluna.xyz\/index.php\/2026\/04\/25\/isalnum%ef%bc%8cisalpha%ef%bc%8cisdigit%ef%bc%8cislower%ef%bc%8cisupper\/preluna\/text\/","title":{"rendered":"isalnum\uff0cisalpha\uff0cisdigit\uff0cislower\uff0cisupper"},"content":{"rendered":"\n
\"\"<\/div><\/figure>\n\n\n\n

\u9898\u76ee\u8003\u70b9<\/h2>\n\n\n\n

\u8fd9\u9053\u9898\u4e3b\u8981\u8003\u7684\u662f \u5b57\u7b26\u4e32\u904d\u5386<\/strong> \u548c \u5b57\u7b26\u4e32\u5224\u65ad\u65b9\u6cd5<\/strong>\u3002<\/p>\n\n\n\n

\u6838\u5fc3\u77e5\u8bc6\u70b9\u6709\uff1a<\/p>\n\n\n\n

\u65b9\u6cd5<\/th>\u4f5c\u7528<\/th><\/tr><\/thead>
c.isalnum()<\/code><\/td>\u5224\u65ad\u5b57\u7b26 c<\/code> \u662f\u5426\u662f\u5b57\u6bcd\u6216\u6570\u5b57<\/td><\/tr>
c.isalpha()<\/code><\/td>\u5224\u65ad\u5b57\u7b26 c<\/code> \u662f\u5426\u662f\u5b57\u6bcd<\/td><\/tr>
c.isdigit()<\/code><\/td>\u5224\u65ad\u5b57\u7b26 c<\/code> \u662f\u5426\u662f\u6570\u5b57<\/td><\/tr>
c.islower()<\/code><\/td>\u5224\u65ad\u5b57\u7b26 c<\/code> \u662f\u5426\u662f\u5c0f\u5199\u5b57\u6bcd<\/td><\/tr>
c.isupper()<\/code><\/td>\u5224\u65ad\u5b57\u7b26 c<\/code> \u662f\u5426\u662f\u5927\u5199\u5b57\u6bcd<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u8fd9\u9898\u7684\u91cd\u70b9\u4e0d\u662f\u7edf\u8ba1\u6709\u591a\u5c11\u4e2a\uff0c\u800c\u662f\u5224\u65ad\uff1a\u5b57\u7b26\u4e32\u91cc\u6709\u6ca1\u6709\u81f3\u5c11\u4e00\u4e2a\u7b26\u5408\u6761\u4ef6\u7684\u5b57\u7b26<\/strong>\u3002<\/p>\n\n\n\n

\n\n\n\n

\u4e00\u3001\u5ba1\u9898<\/h2>\n\n\n\n

\u9898\u76ee\u7ed9\u4f60\u4e00\u4e2a\u5b57\u7b26\u4e32 S<\/code>\u3002<\/p>\n\n\n\n

\u4f60\u9700\u8981\u5206\u522b\u5224\u65ad\u8fd9\u4e2a\u5b57\u7b26\u4e32\u4e2d\u662f\u5426\u5305\u542b\uff1a<\/p>\n\n\n\n

    \n
  1. \u5b57\u6bcd\u6216\u6570\u5b57<\/li>\n\n\n\n
  2. \u5b57\u6bcd<\/li>\n\n\n\n
  3. \u6570\u5b57<\/li>\n\n\n\n
  4. \u5c0f\u5199\u5b57\u6bcd<\/li>\n\n\n\n
  5. \u5927\u5199\u5b57\u6bcd<\/li>\n<\/ol>\n\n\n\n

    \u7136\u540e\u4f9d\u6b21\u8f93\u51fa 5 \u884c\uff0c\u6bcf\u4e00\u884c\u8f93\u51fa True<\/code> \u6216 False<\/code>\u3002<\/p>\n\n\n\n

    \u6bd4\u5982\u6837\u4f8b\u8f93\u5165\uff1a<\/p>\n\n\n\n

    qA2\n<\/code><\/pre>\n\n\n\n
    \u6211\u4eec\u9010\u4e2a\u770b\uff1a<\/p>\n\n\n\n
    \u5b57\u7b26<\/th>\u662f\u5b57\u6bcd\u6216\u6570\u5b57<\/th>\u662f\u5b57\u6bcd<\/th>\u662f\u6570\u5b57<\/th>\u662f\u5c0f\u5199<\/th>\u662f\u5927\u5199<\/th><\/tr><\/thead>
    q<\/code><\/td>\u662f<\/td>\u662f<\/td>\u5426<\/td>\u662f<\/td>\u5426<\/td><\/tr>
    A<\/code><\/td>\u662f<\/td>\u662f<\/td>\u5426<\/td>\u5426<\/td>\u662f<\/td><\/tr>
    2<\/code><\/td>\u662f<\/td>\u5426<\/td>\u662f<\/td>\u5426<\/td>\u5426<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
    \u6240\u4ee5\u7ed3\u679c\u662f\uff1a<\/p>\n\n\n\n
    True\nTrue\nTrue\nTrue\nTrue\n<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \u4e8c\u3001\u601d\u8def\u63d0\u793a<\/h2>\n\n\n\n
    \u8fd9\u9053\u9898\u53ef\u4ee5\u8fd9\u6837\u60f3\uff1a<\/p>\n\n\n\n
    \u9898\u76ee\u8981\u6211\u4eec\u5224\u65ad 5 \u4ef6\u4e8b\uff0c\u6bcf\u4ef6\u4e8b\u90fd\u662f\uff1a<\/p>\n\n\n\n
    \n
    \u5b57\u7b26\u4e32\u91cc\u662f\u5426\u5b58\u5728\u81f3\u5c11\u4e00\u4e2a\u5b57\u7b26\u6ee1\u8db3\u67d0\u4e2a\u6761\u4ef6\uff1f<\/p>\n<\/blockquote>\n\n\n\n
    \u6bd4\u5982\u7b2c\u4e00\u95ee\uff1a<\/p>\n\n\n\n
    \n
    \u5b57\u7b26\u4e32\u91cc\u6709\u6ca1\u6709\u81f3\u5c11\u4e00\u4e2a\u5b57\u7b26\u662f\u5b57\u6bcd\u6216\u6570\u5b57\uff1f<\/p>\n<\/blockquote>\n\n\n\n
    \u90a3\u6211\u4eec\u5c31\u53ef\u4ee5\u904d\u5386\u5b57\u7b26\u4e32\u91cc\u7684\u6bcf\u4e2a\u5b57\u7b26\uff1a<\/p>\n\n\n\n
    for c in s:\n    \u5224\u65ad c \u662f\u4e0d\u662f\u5b57\u6bcd\u6216\u6570\u5b57\n<\/code><\/pre>\n\n\n\n
    \u53ea\u8981\u53d1\u73b0\u6709\u4e00\u4e2a\u5b57\u7b26\u7b26\u5408\u6761\u4ef6\uff0c\u5c31\u53ef\u4ee5\u8bf4\u660e\u7ed3\u679c\u662f True<\/code>\u3002<\/p>\n\n\n\n
    Python \u4e2d\u6709\u4e00\u4e2a\u975e\u5e38\u9002\u5408\u8fd9\u7c7b\u9898\u7684\u51fd\u6570\uff1aany()<\/code>\u3002<\/p>\n\n\n\n
    \u5b83\u7684\u610f\u601d\u662f\uff1a<\/p>\n\n\n\n
    \n
    \u53ea\u8981\u91cc\u9762\u6709\u4e00\u4e2a\u6761\u4ef6\u6210\u7acb\uff0c\u7ed3\u679c\u5c31\u662f True<\/code>\uff1b\u5982\u679c\u5168\u90e8\u4e0d\u6210\u7acb\uff0c\u7ed3\u679c\u624d\u662f False<\/code>\u3002<\/p>\n<\/blockquote>\n\n\n\n
    \u6bd4\u5982\uff1a<\/p>\n\n\n\n
    any(c.isdigit() for c in s)\n<\/code><\/pre>\n\n\n\n
    \u610f\u601d\u662f\uff1a<\/p>\n\n\n\n
    \n
    \u904d\u5386\u5b57\u7b26\u4e32 s<\/code> \u4e2d\u7684\u6bcf\u4e2a\u5b57\u7b26 c<\/code>\uff0c\u53ea\u8981\u6709\u4e00\u4e2a c<\/code> \u662f\u6570\u5b57\uff0c\u6574\u4f53\u7ed3\u679c\u5c31\u662f True<\/code>\u3002<\/p>\n<\/blockquote>\n\n\n\n
    \n\n\n\n
    \u4e09\u3001\u5b8c\u6574\u8bbe\u8ba1\u601d\u8def<\/h2>\n\n\n\n
    \u8fd9\u9053\u9898\u53ef\u4ee5\u62c6\u6210 3 \u6b65\u3002<\/p>\n\n\n\n
    \u7b2c\u4e00\u6b65\uff1a\u8bfb\u53d6\u5b57\u7b26\u4e32<\/h3>\n\n\n\n
    s = input()\n<\/code><\/pre>\n\n\n\n
    \u8fd9\u91cc\u7684 input()<\/code> \u4f1a\u8bfb\u53d6\u4e00\u6574\u884c\u8f93\u5165\uff0c\u5f97\u5230\u7684\u662f\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n
    \u7b2c\u4e8c\u6b65\uff1a\u5206\u522b\u5224\u65ad 5 \u79cd\u60c5\u51b5<\/h3>\n\n\n\n
    \u5bf9\u5e94\u9898\u76ee\u7684 5 \u884c\u8f93\u51fa\uff0c\u6211\u4eec\u5206\u522b\u5199 5 \u4e2a\u5224\u65ad\uff1a<\/p>\n\n\n\n
    any(c.isalnum() for c in s)\nany(c.isalpha() for c in s)\nany(c.isdigit() for c in s)\nany(c.islower() for c in s)\nany(c.isupper() for c in s)\n<\/code><\/pre>\n\n\n\n
    \u5b83\u4eec\u5206\u522b\u8868\u793a\uff1a<\/p>\n\n\n\n
    \u4ee3\u7801<\/th>\u542b\u4e49<\/th><\/tr><\/thead>
    any(c.isalnum() for c in s)<\/code><\/td>\u662f\u5426\u5b58\u5728\u5b57\u6bcd\u6216\u6570\u5b57<\/td><\/tr>
    any(c.isalpha() for c in s)<\/code><\/td>\u662f\u5426\u5b58\u5728\u5b57\u6bcd<\/td><\/tr>
    any(c.isdigit() for c in s)<\/code><\/td>\u662f\u5426\u5b58\u5728\u6570\u5b57<\/td><\/tr>
    any(c.islower() for c in s)<\/code><\/td>\u662f\u5426\u5b58\u5728\u5c0f\u5199\u5b57\u6bcd<\/td><\/tr>
    any(c.isupper() for c in s)<\/code><\/td>\u662f\u5426\u5b58\u5728\u5927\u5199\u5b57\u6bcd<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
    \u7b2c\u4e09\u6b65\uff1a\u6309\u987a\u5e8f\u6253\u5370\u7ed3\u679c<\/h3>\n\n\n\n
    \u9898\u76ee\u8981\u6c42\u8f93\u51fa 5 \u884c\uff0c\u6240\u4ee5\u6bcf\u4e2a\u5224\u65ad\u5355\u72ec print()<\/code> \u4e00\u6b21\u3002<\/p>\n\n\n\n
    \n\n\n\n
    \u56db\u3001\u4ee3\u7801\u5b9e\u73b0<\/h2>\n\n\n\n
    s = input()\n\nprint(any(c.isalnum() for c in s))\nprint(any(c.isalpha() for c in s))\nprint(any(c.isdigit() for c in s))\nprint(any(c.islower() for c in s))\nprint(any(c.isupper() for c in s))\n<\/code><\/pre>\n\n\n\n
    \u8fd9\u5c31\u662f\u8fd9\u9053\u9898\u6700\u5e38\u89c1\u3001\u6700\u7b80\u6d01\u7684\u5199\u6cd5\u3002<\/p>\n\n\n\n
    \n\n\n\n
    \u4e94\u3001\u4ee3\u7801\u9010\u884c\u89e3\u91ca<\/h2>\n\n\n\n
    \u5148\u770b\u7b2c\u4e00\u53e5\uff1a<\/p>\n\n\n\n
    s = input()\n<\/code><\/pre>\n\n\n\n
    \u8fd9\u53e5\u4ee3\u7801\u8bfb\u53d6\u8f93\u5165\u5b57\u7b26\u4e32\uff0c\u6bd4\u5982\u7528\u6237\u8f93\u5165\uff1a<\/p>\n\n\n\n
    qA2\n<\/code><\/pre>\n\n\n\n
    \u90a3\u4e48\uff1a<\/p>\n\n\n\n
    s = \"qA2\"\n<\/code><\/pre>\n\n\n\n
    \u7136\u540e\u770b\u7b2c\u4e00\u884c\u5224\u65ad\uff1a<\/p>\n\n\n\n
    print(any(c.isalnum() for c in s))\n<\/code><\/pre>\n\n\n\n
    \u5b83\u4f1a\u4f9d\u6b21\u68c0\u67e5\uff1a<\/p>\n\n\n\n
    'q'.isalnum()\n'A'.isalnum()\n'2'.isalnum()\n<\/code><\/pre>\n\n\n\n
    \u53ea\u8981\u6709\u4e00\u4e2a\u662f True<\/code>\uff0cany()<\/code> \u7684\u7ed3\u679c\u5c31\u662f True<\/code>\u3002<\/p>\n\n\n\n
    \u56e0\u4e3a q<\/code>\u3001A<\/code>\u30012<\/code> \u90fd\u662f\u5b57\u6bcd\u6216\u6570\u5b57\uff0c\u6240\u4ee5\u7b2c\u4e00\u884c\u8f93\u51fa\uff1a<\/p>\n\n\n\n
    True\n<\/code><\/pre>\n\n\n\n
    \u7b2c\u4e8c\u884c\uff1a<\/p>\n\n\n\n
    print(any(c.isalpha() for c in s))\n<\/code><\/pre>\n\n\n\n
    \u68c0\u67e5\u5b57\u7b26\u4e32\u91cc\u6709\u6ca1\u6709\u5b57\u6bcd\u3002<\/p>\n\n\n\n
    q<\/code> \u548c A<\/code> \u90fd\u662f\u5b57\u6bcd\uff0c\u6240\u4ee5\u8f93\u51fa\uff1a<\/p>\n\n\n\n
    True\n<\/code><\/pre>\n\n\n\n
    \u7b2c\u4e09\u884c\uff1a<\/p>\n\n\n\n
    print(any(c.isdigit() for c in s))\n<\/code><\/pre>\n\n\n\n
    \u68c0\u67e5\u5b57\u7b26\u4e32\u91cc\u6709\u6ca1\u6709\u6570\u5b57\u3002<\/p>\n\n\n\n
    2<\/code> \u662f\u6570\u5b57\uff0c\u6240\u4ee5\u8f93\u51fa\uff1a<\/p>\n\n\n\n
    True\n<\/code><\/pre>\n\n\n\n
    \u7b2c\u56db\u884c\uff1a<\/p>\n\n\n\n
    print(any(c.islower() for c in s))\n<\/code><\/pre>\n\n\n\n
    \u68c0\u67e5\u5b57\u7b26\u4e32\u91cc\u6709\u6ca1\u6709\u5c0f\u5199\u5b57\u6bcd\u3002<\/p>\n\n\n\n
    q<\/code> \u662f\u5c0f\u5199\u5b57\u6bcd\uff0c\u6240\u4ee5\u8f93\u51fa\uff1a<\/p>\n\n\n\n
    True\n<\/code><\/pre>\n\n\n\n
    \u7b2c\u4e94\u884c\uff1a<\/p>\n\n\n\n
    print(any(c.isupper() for c in s))\n<\/code><\/pre>\n\n\n\n
    \u68c0\u67e5\u5b57\u7b26\u4e32\u91cc\u6709\u6ca1\u6709\u5927\u5199\u5b57\u6bcd\u3002<\/p>\n\n\n\n
    A<\/code> \u662f\u5927\u5199\u5b57\u6bcd\uff0c\u6240\u4ee5\u8f93\u51fa\uff1a<\/p>\n\n\n\n
    True\n<\/code><\/pre>\n\n\n\n
    \u6700\u7ec8\u8f93\u51fa\uff1a<\/p>\n\n\n\n
    True\nTrue\nTrue\nTrue\nTrue\n<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \u516d\u3001\u5982\u679c\u4e0d\u7528 any()<\/code>\uff0c\u53ef\u4ee5\u600e\u4e48\u5199\uff1f<\/h2>\n\n\n\n
    \u5982\u679c\u4f60\u89c9\u5f97 any()<\/code> \u4e00\u5f00\u59cb\u4e0d\u597d\u7406\u89e3\uff0c\u53ef\u4ee5\u5148\u7528\u666e\u901a\u5faa\u73af\u5199\u3002<\/p>\n\n\n\n
    \u4f8b\u5982\u5224\u65ad\u662f\u5426\u6709\u6570\u5b57\uff0c\u53ef\u4ee5\u8fd9\u6837\u5199\uff1a<\/p>\n\n\n\n
    has_digit = False\n\nfor c in s:\n    if c.isdigit():\n        has_digit = True\n\nprint(has_digit)\n<\/code><\/pre>\n\n\n\n
    \u610f\u601d\u662f\uff1a<\/p>\n\n\n\n
    \u4e00\u5f00\u59cb\u5047\u8bbe\u6ca1\u6709\u6570\u5b57\uff1a<\/p>\n\n\n\n
    has_digit = False\n<\/code><\/pre>\n\n\n\n
    \u7136\u540e\u904d\u5386\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n
    \u5982\u679c\u9047\u5230\u6570\u5b57\uff0c\u5c31\u628a\u5b83\u6539\u6210\uff1a<\/p>\n\n\n\n
    has_digit = True\n<\/code><\/pre>\n\n\n\n
    \u6700\u540e\u6253\u5370\u7ed3\u679c\u3002<\/p>\n\n\n\n
    \u4f46\u662f\u8fd9\u9053\u9898\u8981\u5224\u65ad 5 \u79cd\u60c5\u51b5\uff0c\u5982\u679c\u5168\u90e8\u8fd9\u6837\u5199\uff0c\u4ee3\u7801\u4f1a\u6bd4\u8f83\u957f\u3002\u6240\u4ee5\u66f4\u63a8\u8350\u7528 any()<\/code>\u3002<\/p>\n\n\n\n
    \n\n\n\n
    \u4e03\u3001\u65b9\u6cd5\u603b\u7ed3<\/h2>\n\n\n\n
    \u4ee5\u540e\u9047\u5230\u8fd9\u7c7b\u9898\uff0c\u53ef\u4ee5\u6309\u7167\u8fd9\u4e2a\u601d\u8def\u5224\u65ad\uff1a<\/p>\n\n\n\n
    \u53ea\u8981\u9898\u76ee\u51fa\u73b0\uff1a<\/p>\n\n\n\n
    \n
    \u5224\u65ad\u5b57\u7b26\u4e32\u4e2d\u662f\u5426\u5305\u542b\u67d0\u79cd\u5b57\u7b26<\/p>\n<\/blockquote>\n\n\n\n
    \u6bd4\u5982\uff1a<\/p>\n\n\n\n
      \n
    • \u662f\u5426\u5305\u542b\u6570\u5b57<\/li>\n\n\n\n
    • \u662f\u5426\u5305\u542b\u5b57\u6bcd<\/li>\n\n\n\n
    • \u662f\u5426\u5305\u542b\u5927\u5199\u5b57\u6bcd<\/li>\n\n\n\n
    • \u662f\u5426\u5305\u542b\u5c0f\u5199\u5b57\u6bcd<\/li>\n\n\n\n
    • \u662f\u5426\u5305\u542b\u7279\u6b8a\u7b26\u53f7<\/li>\n<\/ul>\n\n\n\n
      \u5c31\u53ef\u4ee5\u60f3\u5230\u8fd9\u4e2a\u7ed3\u6784\uff1a<\/p>\n\n\n\n
      any(\u5224\u65ad\u6761\u4ef6 for \u5b57\u7b26 in \u5b57\u7b26\u4e32)\n<\/code><\/pre>\n\n\n\n
      \u672c\u9898\u7684\u56fa\u5b9a\u6a21\u677f\u5c31\u662f\uff1a<\/p>\n\n\n\n
      any(c.\u67d0\u4e2a\u5224\u65ad\u65b9\u6cd5() for c in s)\n<\/code><\/pre>\n\n\n\n
      \u8fd9\u7c7b\u9898\u7684\u5173\u952e\u4e0d\u662f\u590d\u6742\u7b97\u6cd5\uff0c\u800c\u662f\u4f1a\u4e0d\u4f1a\u628a\u9898\u76ee\u8981\u6c42\u7ffb\u8bd1\u6210\u5bf9\u5e94\u7684\u5b57\u7b26\u4e32\u65b9\u6cd5\u3002<\/p>\n\n\n\n
      \n\n\n\n
      \u516b\u3001\u7ec3\u4e60<\/h2>\n\n\n\n
      \u7ed9\u4f60\u4e00\u4e2a\u5b57\u7b26\u4e32 s<\/code>\uff0c\u5224\u65ad\u5b83\u662f\u5426\u5305\u542b\u81f3\u5c11\u4e00\u4e2a\u7a7a\u683c\u5b57\u7b26\u3002<\/p>\n\n\n\n
      \u8981\u6c42\uff1a<\/p>\n\n\n\n
      \u5982\u679c\u5305\u542b\u7a7a\u683c\uff0c\u8f93\u51fa True<\/code>\uff1b\u5426\u5219\u8f93\u51fa False<\/code>\u3002<\/p>\n\n\n\n
      \u4f8b\u5982\u8f93\u5165\uff1a<\/p>\n\n\n\n
      hello world\n<\/code><\/pre>\n\n\n\n
      \u8f93\u51fa\uff1a<\/p>\n\n\n\n
      True\n<\/code><\/pre>\n\n\n\n
      \u63d0\u793a\uff1a<\/p>\n\n\n\n
      \u53ef\u4ee5\u904d\u5386\u5b57\u7b26\u4e32\u4e2d\u7684\u6bcf\u4e2a\u5b57\u7b26\uff0c\u5224\u65ad\uff1a<\/p>\n\n\n\n
      c == \" \"\n<\/code><\/pre>\n\n\n\n
      \u5148\u56de\u7b54\u4e24\u4e2a\u95ee\u9898<\/h2>\n\n\n\n
      \u8fd9\u9053\u9898\u76ee\uff0c\u662f\u91c7\u7528\u4e86\u51fd\u6570\u6765\u89e3\u51b3\u8fd9\u6837\u7684\u95ee\u9898\uff0c\u4f46\u662f\u4e3a\u4ec0\u4e48\u6709\u7684\u9898\u76ee\u5b83\u662f\u901a\u8fc7\u6bd4\u8f83ascll\u7801\u6765\u89e3\u51b3\u8fd9\u6837\u7684\u95ee\u9898\uff1f\u800c\u4e14\u6211\u4e5f\u6ca1\u6709\u770b\u5230\u8fd9\u9053\u9898\u76ee\uff0c\u5b83\u5f15\u7528\u4e86\u54ea\u4e9b\u5e93\u6216\u5305\u5440\uff1f<\/strong><\/p>\n\n\n\n
      \u8fd9\u9053\u9898\u786e\u5b9e\u662f\u7528\u4e86\u4e00\u4e9b\u201c\u51fd\u6570\/\u65b9\u6cd5\u201d\u6765\u89e3\u51b3\uff0c\u6bd4\u5982\uff1a<\/p>\n\n\n\n
      c.isalnum()\nc.isalpha()\nc.isdigit()\nc.islower()\nc.isupper()\n<\/code><\/pre>\n\n\n\n
      \u4f46\u662f\u5b83\u6ca1\u6709\u5f15\u7528\u4efb\u4f55\u5e93\u6216\u5305<\/strong>\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u65b9\u6cd5\u662f Python \u5b57\u7b26\u4e32\u5bf9\u8c61\u81ea\u5e26\u7684\u529f\u80fd\u3002<\/p>\n\n\n\n
      \u4e5f\u5c31\u662f\u8bf4\uff0c\u53ea\u8981 c<\/code> \u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\u5b57\u7b26\uff0c\u5c31\u5929\u7136\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u4e0d\u9700\u8981\u5199\uff1a<\/p>\n\n\n\n
      import ...\n<\/code><\/pre>\n\n\n\n
      \u4f8b\u5982\uff1a<\/p>\n\n\n\n
      c = \"A\"\n\nprint(c.isupper())\n<\/code><\/pre>\n\n\n\n
      \u53ef\u4ee5\u76f4\u63a5\u8fd0\u884c\uff0c\u56e0\u4e3a isupper()<\/code> \u662f\u5b57\u7b26\u4e32\u7c7b\u578b str<\/code> \u81ea\u5e26\u7684\u65b9\u6cd5\u3002<\/p>\n\n\n\n
      \n\n\n\n
      \u4e00\u3001\u4e3a\u4ec0\u4e48\u8fd9\u9053\u9898\u4e0d\u7528\u5bfc\u5165\u5e93\uff1f<\/h2>\n\n\n\n
      Python \u91cc\u6709\u4e9b\u529f\u80fd\u9700\u8981\u5bfc\u5165\u5e93\uff0c\u6bd4\u5982\uff1a<\/p>\n\n\n\n
      import math\n<\/code><\/pre>\n\n\n\n
      \u7136\u540e\u624d\u80fd\u4f7f\u7528\uff1a<\/p>\n\n\n\n
      math.sqrt(16)\n<\/code><\/pre>\n\n\n\n
      \u4f46\u662f\u5b57\u7b26\u4e32\u672c\u8eab\u5c31\u6709\u5f88\u591a\u5185\u7f6e\u65b9\u6cd5\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n
      \"abc\".isalpha()\n\"123\".isdigit()\n\"A\".isupper()\n\"a\".islower()\n<\/code><\/pre>\n\n\n\n
      \u8fd9\u4e9b\u90fd\u5c5e\u4e8e\u5b57\u7b26\u4e32\u5bf9\u8c61 str<\/code> \u81ea\u5e26\u7684\u65b9\u6cd5\u3002<\/p>\n\n\n\n
      \u6240\u4ee5\u8fd9\u9053\u9898\u4e0d\u9700\u8981\u4efb\u4f55\u5bfc\u5165\u3002<\/p>\n\n\n\n
      \u53ef\u4ee5\u8fd9\u6837\u7406\u89e3\uff1a<\/p>\n\n\n\n
      c.isdigit()\n<\/code><\/pre>\n\n\n\n
      \u4e0d\u662f\u8c03\u7528\u5916\u90e8\u5e93\uff0c\u800c\u662f\u5728\u95ee\u5b57\u7b26 c<\/code>\uff1a<\/p>\n\n\n\n
      \n
      \u4f60\u81ea\u5df1\u662f\u4e0d\u662f\u6570\u5b57\uff1f<\/p>\n<\/blockquote>\n\n\n\n
      \n\n\n\n
      \u4e8c\u3001\u4e3a\u4ec0\u4e48\u6709\u7684\u9898\u4f1a\u6bd4\u8f83 ASCII \u7801\uff1f<\/h2>\n\n\n\n
      \u6709\u4e9b\u9898\u4e0d\u7528 isdigit()<\/code>\u3001isalpha()<\/code> \u8fd9\u4e9b\u65b9\u6cd5\uff0c\u800c\u662f\u901a\u8fc7 ASCII \u7801\u8303\u56f4\u6765\u5224\u65ad\u5b57\u7b26\u7c7b\u578b\u3002<\/p>\n\n\n\n
      \u6bd4\u5982\u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u662f\u4e0d\u662f\u5c0f\u5199\u5b57\u6bcd\uff0c\u53ef\u4ee5\u5199\uff1a<\/p>\n\n\n\n
      'a' <= c <= 'z'\n<\/code><\/pre>\n\n\n\n
      \u6216\u8005\u5199\u6210 ASCII \u7801\u5f62\u5f0f\uff1a<\/p>\n\n\n\n
      97 <= ord(c) <= 122\n<\/code><\/pre>\n\n\n\n
      \u8fd9\u91cc\u7684 ord(c)<\/code> \u53ef\u4ee5\u628a\u5b57\u7b26\u8f6c\u6210\u5bf9\u5e94\u7684 ASCII \u7f16\u7801\u503c\u3002<\/p>\n\n\n\n
      \u4f8b\u5982\uff1a<\/p>\n\n\n\n
      print(ord('a'))  # 97\nprint(ord('z'))  # 122\nprint(ord('A'))  # 65\nprint(ord('Z'))  # 90\nprint(ord('0'))  # 48\nprint(ord('9'))  # 57\n<\/code><\/pre>\n\n\n\n
      \u6240\u4ee5\uff1a<\/p>\n\n\n\n
      \u5b57\u7b26\u8303\u56f4<\/th>ASCII \u8303\u56f4<\/th><\/tr><\/thead>
      '0'<\/code> \u5230 '9'<\/code><\/td>48 \u5230 57<\/td><\/tr>
      'A'<\/code> \u5230 'Z'<\/code><\/td>65 \u5230 90<\/td><\/tr>
      'a'<\/code> \u5230 'z'<\/code><\/td>97 \u5230 122<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
      \u56e0\u6b64\uff0c\u5224\u65ad\u6570\u5b57\u53ef\u4ee5\u5199\u6210\uff1a<\/p>\n\n\n\n
      '0' <= c <= '9'\n<\/code><\/pre>\n\n\n\n
      \u6216\u8005\uff1a<\/p>\n\n\n\n
      48 <= ord(c) <= 57\n<\/code><\/pre>\n\n\n\n
      \u5224\u65ad\u5927\u5199\u5b57\u6bcd\u53ef\u4ee5\u5199\u6210\uff1a<\/p>\n\n\n\n
      'A' <= c <= 'Z'\n<\/code><\/pre>\n\n\n\n
      \u5224\u65ad\u5c0f\u5199\u5b57\u6bcd\u53ef\u4ee5\u5199\u6210\uff1a<\/p>\n\n\n\n
      'a' <= c <= 'z'\n<\/code><\/pre>\n\n\n\n
      \n\n\n\n
      \u4e09\u3001\u5b57\u7b26\u4e32\u65b9\u6cd5\u548c ASCII \u6bd4\u8f83\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/h2>\n\n\n\n
      \u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\uff0c\u5148\u8bb0\u4f4f\u4e00\u53e5\u8bdd\uff1a<\/p>\n\n\n\n
      \n
      \u80fd\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5\u65f6\uff0c\u4f18\u5148\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5\uff1b\u9898\u76ee\u8981\u6c42\u4f60\u7ec3\u5e95\u5c42\u5224\u65ad\u65f6\uff0c\u518d\u7528 ASCII \u6bd4\u8f83\u3002<\/p>\n<\/blockquote>\n\n\n\n
      \u6bd4\u5982\u8fd9\u9053\u9898\uff0c\u9898\u76ee\u672c\u8eab\u5c31\u662f HackerRank \u7684\u5b57\u7b26\u4e32\u9a8c\u8bc1\u9898\uff0c\u5b83\u7684\u76ee\u7684\u5c31\u662f\u8ba9\u4f60\u719f\u6089\u8fd9\u4e9b\u5b57\u7b26\u4e32\u5224\u65ad\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
      isalnum()\nisalpha()\nisdigit()\nislower()\nisupper()\n<\/code><\/pre>\n\n\n\n
      \u6240\u4ee5\u7528\u8fd9\u4e9b\u65b9\u6cd5\u6700\u5408\u9002\u3002<\/p>\n\n\n\n
      \u800c ASCII \u6bd4\u8f83\u66f4\u50cf\u662f\u201c\u624b\u52a8\u5b9e\u73b0\u5224\u65ad\u89c4\u5219\u201d\u3002<\/p>\n\n\n\n
      \u5199\u6cd5\u4e00\uff1a\u4f7f\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5<\/h3>\n\n\n\n
      c.isdigit()\n<\/code><\/pre>\n\n\n\n
      \u610f\u601d\u5f88\u76f4\u63a5\uff1a<\/p>\n\n\n\n
      \n
      \u5224\u65ad c<\/code> \u662f\u4e0d\u662f\u6570\u5b57\u3002<\/p>\n<\/blockquote>\n\n\n\n
      \u5199\u6cd5\u4e8c\uff1a\u4f7f\u7528\u5b57\u7b26\u8303\u56f4\u6bd4\u8f83<\/h3>\n\n\n\n
      '0' <= c <= '9'\n<\/code><\/pre>\n\n\n\n
      \u610f\u601d\u662f\uff1a<\/p>\n\n\n\n
      \n
      \u5224\u65ad c<\/code> \u662f\u5426\u843d\u5728\u5b57\u7b26 '0'<\/code> \u5230 '9'<\/code> \u4e4b\u95f4\u3002<\/p>\n<\/blockquote>\n\n\n\n
      \u5199\u6cd5\u4e09\uff1a\u4f7f\u7528 ASCII \u7f16\u7801\u6bd4\u8f83<\/h3>\n\n\n\n
      48 <= ord(c) <= 57\n<\/code><\/pre>\n\n\n\n
      \u610f\u601d\u662f\uff1a<\/p>\n\n\n\n
      \n
      \u5148\u628a\u5b57\u7b26\u8f6c\u6210\u7f16\u7801\u503c\uff0c\u518d\u5224\u65ad\u5b83\u662f\u5426\u5728\u6570\u5b57\u5b57\u7b26\u7684\u7f16\u7801\u8303\u56f4\u5185\u3002<\/p>\n<\/blockquote>\n\n\n\n
      \u8fd9\u4e09\u79cd\u5199\u6cd5\uff0c\u672c\u8d28\u4e0a\u90fd\u662f\u5728\u5224\u65ad\u201c\u662f\u4e0d\u662f\u6570\u5b57\u201d\uff0c\u53ea\u662f\u62bd\u8c61\u7a0b\u5ea6\u4e0d\u540c\u3002<\/p>\n\n\n\n
      \n\n\n\n
      \u56db\u3001\u8fd9\u9053\u9898\u4e3a\u4ec0\u4e48\u63a8\u8350\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5\uff1f<\/h2>\n\n\n\n
      \u56e0\u4e3a\u9898\u76ee\u8981\u6c42\u5206\u522b\u5224\u65ad\uff1a<\/p>\n\n\n\n
        \n
      1. \u662f\u5426\u6709\u5b57\u6bcd\u6216\u6570\u5b57<\/li>\n\n\n\n
      2. \u662f\u5426\u6709\u5b57\u6bcd<\/li>\n\n\n\n
      3. \u662f\u5426\u6709\u6570\u5b57<\/li>\n\n\n\n
      4. \u662f\u5426\u6709\u5c0f\u5199\u5b57\u6bcd<\/li>\n\n\n\n
      5. \u662f\u5426\u6709\u5927\u5199\u5b57\u6bcd<\/li>\n<\/ol>\n\n\n\n
        Python \u5df2\u7ecf\u628a\u8fd9\u4e9b\u5224\u65ad\u5c01\u88c5\u597d\u4e86\uff1a<\/p>\n\n\n\n
        \u9898\u76ee\u8981\u6c42<\/th>\u63a8\u8350\u65b9\u6cd5<\/th><\/tr><\/thead>
        \u5b57\u6bcd\u6216\u6570\u5b57<\/td>isalnum()<\/code><\/td><\/tr>
        \u5b57\u6bcd<\/td>isalpha()<\/code><\/td><\/tr>
        \u6570\u5b57<\/td>isdigit()<\/code><\/td><\/tr>
        \u5c0f\u5199\u5b57\u6bcd<\/td>islower()<\/code><\/td><\/tr>
        \u5927\u5199\u5b57\u6bcd<\/td>isupper()<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
        \u6240\u4ee5\u76f4\u63a5\u5199\uff1a<\/p>\n\n\n\n
        print(any(c.isalnum() for c in s))\nprint(any(c.isalpha() for c in s))\nprint(any(c.isdigit() for c in s))\nprint(any(c.islower() for c in s))\nprint(any(c.isupper() for c in s))\n<\/code><\/pre>\n\n\n\n
        \u8fd9\u662f\u6700\u8d34\u5408\u9898\u610f\u7684\u505a\u6cd5\u3002<\/p>\n\n\n\n
        \n\n\n\n
        \u4e94\u3001\u5982\u679c\u7528 ASCII \u601d\u8def\uff0c\u8fd9\u9053\u9898\u53ef\u4ee5\u600e\u4e48\u5199\uff1f<\/h2>\n\n\n\n
        \u4f60\u4e5f\u53ef\u4ee5\u5b8c\u5168\u4e0d\u7528\u8fd9\u4e9b\u5b57\u7b26\u4e32\u65b9\u6cd5\uff0c\u6539\u6210 ASCII \u8303\u56f4\u5224\u65ad\u3002<\/p>\n\n\n\n
        \u5148\u5b9a\u4e49\u51e0\u4e2a\u5224\u65ad\u6761\u4ef6\uff1a<\/p>\n\n\n\n
        s = input()\n\nhas_alnum = False\nhas_alpha = False\nhas_digit = False\nhas_lower = False\nhas_upper = False\n\nfor c in s:\n    if '0' <= c <= '9':\n        has_digit = True\n        has_alnum = True\n\n    if 'a' <= c <= 'z':\n        has_lower = True\n        has_alpha = True\n        has_alnum = True\n\n    if 'A' <= c <= 'Z':\n        has_upper = True\n        has_alpha = True\n        has_alnum = True\n\nprint(has_alnum)\nprint(has_alpha)\nprint(has_digit)\nprint(has_lower)\nprint(has_upper)\n<\/code><\/pre>\n\n\n\n
        \u8fd9\u6bb5\u4ee3\u7801\u7684\u903b\u8f91\u662f\uff1a<\/p>\n\n\n\n
        \u9047\u5230\u6570\u5b57\uff0c\u5c31\u8bf4\u660e\uff1a<\/p>\n\n\n\n
        has_digit = True\nhas_alnum = True\n<\/code><\/pre>\n\n\n\n
        \u9047\u5230\u5c0f\u5199\u5b57\u6bcd\uff0c\u5c31\u8bf4\u660e\uff1a<\/p>\n\n\n\n
        has_lower = True\nhas_alpha = True\nhas_alnum = True\n<\/code><\/pre>\n\n\n\n
        \u9047\u5230\u5927\u5199\u5b57\u6bcd\uff0c\u5c31\u8bf4\u660e\uff1a<\/p>\n\n\n\n
        has_upper = True\nhas_alpha = True\nhas_alnum = True\n<\/code><\/pre>\n\n\n\n
        \u56e0\u4e3a\u5b57\u6bcd\u548c\u6570\u5b57\u90fd\u5c5e\u4e8e alnum<\/code>\uff0c\u6240\u4ee5\u53ea\u8981\u9047\u5230\u5b57\u6bcd\u6216\u6570\u5b57\uff0chas_alnum<\/code> \u5c31\u5e94\u8be5\u53d8\u6210 True<\/code>\u3002<\/p>\n\n\n\n
        \n\n\n\n
        \u516d\u3001\u4e24\u79cd\u5199\u6cd5\u600e\u4e48\u9009\u62e9\uff1f<\/h2>\n\n\n\n
        \u53ef\u4ee5\u8fd9\u6837\u5224\u65ad\uff1a<\/p>\n\n\n\n
        \u60c5\u51b5<\/th>\u63a8\u8350\u5199\u6cd5<\/th><\/tr><\/thead>
        \u9898\u76ee\u8003 Python \u5b57\u7b26\u4e32\u65b9\u6cd5<\/td>\u7528 isdigit()<\/code>\u3001isalpha()<\/code> \u7b49<\/td><\/tr>
        \u9898\u76ee\u660e\u786e\u8981\u6c42\u5224\u65ad ASCII \u8303\u56f4<\/td>\u7528 'a' <= c <= 'z'<\/code> \u6216 ord(c)<\/code><\/td><\/tr>
        \u60f3\u8ba9\u4ee3\u7801\u66f4\u77ed\u3001\u66f4\u6e05\u6670<\/td>\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5<\/td><\/tr>
        \u60f3\u7ec3\u5e95\u5c42\u5b57\u7b26\u7f16\u7801<\/td>\u7528 ASCII \u6bd4\u8f83<\/td><\/tr>
        \u521d\u5b66\u9636\u6bb5\u505a\u5e38\u89c4\u9898<\/td>\u4f18\u5148\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
        \u6240\u4ee5\u8fd9\u9053\u9898\u6700\u63a8\u8350\u7684\u5199\u6cd5\u8fd8\u662f\uff1a<\/p>\n\n\n\n
        s = input()\n\nprint(any(c.isalnum() for c in s))\nprint(any(c.isalpha() for c in s))\nprint(any(c.isdigit() for c in s))\nprint(any(c.islower() for c in s))\nprint(any(c.isupper() for c in s))\n<\/code><\/pre>\n\n\n\n
        \u56e0\u4e3a\u5b83\u521a\u597d\u5bf9\u5e94\u9898\u76ee\u8981\u8003\u7684\u5b57\u7b26\u4e32\u9a8c\u8bc1\u65b9\u6cd5\u3002<\/p>\n\n\n\n
        \n\n\n\n
        \u4e03\u3001\u65b9\u6cd5\u603b\u7ed3<\/h2>\n\n\n\n
        \u8fd9\u7c7b\u9898\u6709\u4e24\u6761\u8def\u7ebf\u3002<\/p>\n\n\n\n
        \u7b2c\u4e00\u6761\u8def\u7ebf\u662f\u201c\u8c03\u7528\u73b0\u6210\u65b9\u6cd5\u201d\uff1a<\/p>\n\n\n\n
        c.isdigit()\nc.isalpha()\nc.isupper()\n<\/code><\/pre>\n\n\n\n
        \u8fd9\u79cd\u5199\u6cd5\u66f4\u7b80\u5355\uff0c\u4e5f\u66f4\u7b26\u5408 Python \u7684\u4e60\u60ef\u3002<\/p>\n\n\n\n
        \u7b2c\u4e8c\u6761\u8def\u7ebf\u662f\u201c\u81ea\u5df1\u5224\u65ad\u5b57\u7b26\u8303\u56f4\u201d\uff1a<\/p>\n\n\n\n
        '0' <= c <= '9'\n'a' <= c <= 'z'\n'A' <= c <= 'Z'\n<\/code><\/pre>\n\n\n\n
        \u8fd9\u79cd\u5199\u6cd5\u66f4\u63a5\u8fd1\u5e95\u5c42\u539f\u7406\u3002<\/p>\n\n\n\n
        \u4f60\u73b0\u5728\u4f5c\u4e3a\u521d\u5b66\u8005\uff0c\u53ef\u4ee5\u5148\u638c\u63e1\u7b2c\u4e00\u79cd\u3002\u7b49\u4f60\u7406\u89e3\u4e86\u5b57\u7b26\u672c\u8d28\u4e0a\u4e5f\u53ef\u4ee5\u6bd4\u8f83\u5927\u5c0f\u4e4b\u540e\uff0c\u518d\u770b\u7b2c\u4e8c\u79cd\u5c31\u4f1a\u66f4\u5bb9\u6613\u3002<\/p>\n\n\n\n
        \n\n\n\n
        \u516b\u3001\u7ec3\u4e60<\/h2>\n\n\n\n
        \u7ed9\u4f60\u4e00\u4e2a\u5b57\u7b26\u4e32 s<\/code>\uff0c\u5224\u65ad\u5b83\u662f\u5426\u5305\u542b\u81f3\u5c11\u4e00\u4e2a\u82f1\u6587\u5c0f\u5199\u5b57\u6bcd\u3002<\/p>\n\n\n\n
        \u8981\u6c42\u4f60\u5206\u522b\u7528\u4e24\u79cd\u65b9\u5f0f\u601d\u8003\uff1a<\/p>\n\n\n\n
        \u7b2c\u4e00\u79cd\u65b9\u5f0f\uff1a\u4f7f\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5\u3002<\/p>\n\n\n\n
        \u63d0\u793a\uff1a<\/p>\n\n\n\n
        c.islower()\n<\/code><\/pre>\n\n\n\n
        \u7b2c\u4e8c\u79cd\u65b9\u5f0f\uff1a\u4f7f\u7528\u5b57\u7b26\u8303\u56f4\u6bd4\u8f83\u3002<\/p>\n\n\n\n
        \u63d0\u793a\uff1a<\/p>\n\n\n\n
        'a' <= c <= 'z'\n<\/code><\/pre>\n\n\n\n
        \u4f60\u53ef\u4ee5\u5148\u8bd5\u7740\u5199\u51fa\u8fd9\u4e24\u79cd\u7248\u672c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
        \u9898\u76ee\u8003\u70b9 \u8fd9\u9053\u9898\u4e3b\u8981\u8003\u7684\u662f \u5b57\u7b26\u4e32\u904d\u5386 \u548c \u5b57\u7b26\u4e32\u5224\u65ad\u65b9\u6cd5\u3002 \u6838\u5fc3\u77e5\u8bc6\u70b9\u6709\uff1a \u65b9\u6cd5 \u4f5c\u7528 c.isalnum( […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[54],"tags":[],"class_list":["post-2189","post","type-post","status-publish","format-standard","hentry","category-text"],"_links":{"self":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/2189","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/comments?post=2189"}],"version-history":[{"count":1,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/2189\/revisions"}],"predecessor-version":[{"id":2191,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/2189\/revisions\/2191"}],"wp:attachment":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/media?parent=2189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/categories?post=2189"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/tags?post=2189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}