{"id":950827,"date":"2024-12-27T00:45:22","date_gmt":"2024-12-26T16:45:22","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/950827.html"},"modified":"2024-12-27T00:45:25","modified_gmt":"2024-12-26T16:45:25","slug":"python-%e5%a6%82%e4%bd%95%e8%af%86%e5%88%ab%e7%ac%a6%e5%8f%b7","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/950827.html","title":{"rendered":"python \u5982\u4f55\u8bc6\u522b\u7b26\u53f7"},"content":{"rendered":"

\"python<\/p>\n

Python\u8bc6\u522b\u7b26\u53f7\u7684\u4e3b\u8981\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u3001\u5b57\u7b26\u4e32\u65b9\u6cd5\u548cUnicode\u5b57\u7b26\u5e93\u3002\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u5904\u7406\u590d\u6742\u7b26\u53f7\u5339\u914d\u7684\u5f3a\u5927\u5de5\u5177\u3001\u5b57\u7b26\u4e32\u65b9\u6cd5\u5219\u9002\u7528\u4e8e\u7b80\u5355\u7684\u7b26\u53f7\u68c0\u6d4b\u3001Unicode\u5b57\u7b26\u5e93\u53ef\u4ee5\u8bc6\u522b\u548c\u5904\u7406\u5404\u79cd\u8bed\u8a00\u548c\u7279\u6b8a\u7b26\u53f7\u3002<\/strong>\u5728\u5177\u4f53\u5e94\u7528\u4e2d\uff0c\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u6548\u7387\u548c\u53ef\u8bfb\u6027\u3002\u63a5\u4e0b\u6765\uff0c\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u8bc6\u522b\u7b26\u53f7<\/p>\n<\/p>\n

\u6b63\u5219\u8868\u8fbe\u5f0f\uff08Regular Expression\uff09\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u6587\u672c\u5904\u7406\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u590d\u6742\u7684\u6a21\u5f0f\u5339\u914d\u548c\u66ff\u6362\u3002Python\u4e2d\u901a\u8fc7re<\/code>\u6a21\u5757\u6765\u5904\u7406\u6b63\u5219\u8868\u8fbe\u5f0f\u3002<\/p>\n<\/p>\n

    \n
  1. \n

    \u57fa\u672c\u7528\u6cd5<\/strong><\/p>\n<\/p>\n

    \u4f7f\u7528re<\/code>\u6a21\u5757\uff0c\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\uff0c\u5e76\u7528\u6765\u5339\u914d\u5b57\u7b26\u4e32\u4e2d\u7684\u7b26\u53f7\u3002\u4f8b\u5982\uff0c\u8981\u8bc6\u522b\u6240\u6709\u975e\u5b57\u6bcd\u548c\u6570\u5b57\u7684\u7b26\u53f7\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n

    import re<\/p>\n
    text = "Hello, World! 123 #Python"<\/p>\n
    pattern = r"[^\\w\\s]"<\/p>\n
    symbols = re.findall(pattern, text)<\/p>\n
    print(symbols)  # \u8f93\u51fa\uff1a[',', '!', '#']<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c[^\\w\\s]<\/code>\u8868\u793a\u5339\u914d\u6240\u6709\u975e\u5b57\u6bcd\u6570\u5b57\u548c\u7a7a\u767d\u5b57\u7b26\u7684\u7b26\u53f7\u3002<\/p>\n<\/p>\n<\/li>\n
  2. \n
    \u590d\u6742\u6a21\u5f0f\u5339\u914d<\/strong><\/p>\n<\/p>\n
    \u6b63\u5219\u8868\u8fbe\u5f0f\u53ef\u4ee5\u7528\u6765\u8bc6\u522b\u66f4\u590d\u6742\u7684\u7b26\u53f7\u7ec4\u5408\uff0c\u4f8b\u5982\u8fde\u7eed\u7684\u7279\u6b8a\u5b57\u7b26\u3001\u7279\u5b9a\u7c7b\u578b\u7684\u6807\u70b9\u7b26\u53f7\u7b49\u3002<\/p>\n<\/p>\n
    pattern = r"[!@#$%^&*()_+-={}\\[\\]:;\\"'<>?,.\/]"<\/p>\n
    symbols = re.findall(pattern, text)<\/p>\n
    print(symbols)  # \u8f93\u51fa\uff1a['!', '#']<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u8fd9\u79cd\u65b9\u6cd5\u975e\u5e38\u7075\u6d3b\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u81ea\u5b9a\u4e49\u5339\u914d\u6a21\u5f0f\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
    \u4e8c\u3001\u5b57\u7b26\u4e32\u65b9\u6cd5\u8bc6\u522b\u7b26\u53f7<\/p>\n<\/p>\n
    \u5bf9\u4e8e\u7b80\u5355\u7684\u7b26\u53f7\u68c0\u6d4b\uff0cPython\u7684\u5b57\u7b26\u4e32\u65b9\u6cd5\u63d0\u4f9b\u4e86\u4e00\u79cd\u76f4\u63a5\u800c\u7b80\u5355\u7684\u65b9\u5f0f\u3002<\/p>\n<\/p>\n
      \n
    1. \n
      \u4f7f\u7528str.isalpha<\/code>\u548cstr.isdigit<\/code><\/strong><\/p>\n<\/p>\n
      \u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u6765\u533a\u5206\u5b57\u6bcd\u3001\u6570\u5b57\u548c\u7b26\u53f7\uff1a<\/p>\n<\/p>\n
      text = "Hello, World! 123 #Python"<\/p>\n
      symbols = [char for char in text if not char.isalnum() and not char.isspace()]<\/p>\n
      print(symbols)  # \u8f93\u51fa\uff1a['!', '#']<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u7b80\u5355\u7684\u7b26\u53f7\u8bc6\u522b\u3002<\/p>\n<\/p>\n<\/li>\n
    2. \n
      \u4f7f\u7528str.replace<\/code>\u8fdb\u884c\u66ff\u6362<\/strong><\/p>\n<\/p>\n
      \u5982\u679c\u9700\u8981\u5bf9\u7279\u5b9a\u7b26\u53f7\u8fdb\u884c\u66ff\u6362\uff0c\u53ef\u4ee5\u4f7f\u7528replace<\/code>\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n
      text = "Hello, World! 123 #Python"<\/p>\n
      text = text.replace("#", "@")<\/p>\n
      print(text)  # \u8f93\u51fa\uff1aHello, World! 123 @Python<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u8fd9\u79cd\u65b9\u6cd5\u9002\u5408\u5904\u7406\u5df2\u77e5\u7684\u7279\u5b9a\u7b26\u53f7\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
      \u4e09\u3001Unicode\u5b57\u7b26\u5e93\u8bc6\u522b\u7b26\u53f7<\/p>\n<\/p>\n
      Python\u7684Unicode\u652f\u6301\u975e\u5e38\u5f3a\u5927\uff0c\u53ef\u4ee5\u8bc6\u522b\u548c\u5904\u7406\u5404\u79cd\u8bed\u8a00\u548c\u7279\u6b8a\u7b26\u53f7\u3002<\/p>\n<\/p>\n
        \n
      1. \n
        \u4f7f\u7528unicodedata<\/code>\u6a21\u5757<\/strong><\/p>\n<\/p>\n
        unicodedata<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u5bf9Unicode\u5b57\u7b26\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u53ef\u4ee5\u7528\u4e8e\u8bc6\u522b\u7b26\u53f7\u7c7b\u578b\u3002<\/p>\n<\/p>\n
        import unicodedata<\/p>\n
        text = "Hello, \u4e16\u754c! 123 #Python"<\/p>\n
        for char in text:<\/p>\n
            if unicodedata.category(char).startswith('P'):<\/p>\n
                print(f"Symbol: {char}")  # \u8f93\u51fa\uff1aSymbol: !, Symbol: #<\/p>\n
        <\/code><\/pre>\n<\/p>\n
        \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cunicodedata.category(char)<\/code>\u8fd4\u56de\u5b57\u7b26\u7684Unicode\u7c7b\u522b\uff0c'P'\u4ee3\u8868\u6807\u70b9\u7b26\u53f7\u3002<\/p>\n<\/p>\n<\/li>\n
      2. \n
        \u5904\u7406\u4e0d\u540c\u8bed\u8a00\u7684\u7b26\u53f7<\/strong><\/p>\n<\/p>\n
        Unicode\u652f\u6301\u591a\u79cd\u8bed\u8a00\u7b26\u53f7\u7684\u8bc6\u522b\u548c\u5904\u7406\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u6269\u5c55\u5230\u5168\u7403\u5316\u5e94\u7528\u3002<\/p>\n<\/p>\n
        for char in text:<\/p>\n
            if unicodedata.name(char).startswith('CJK'):<\/p>\n
                print(f"CJK Symbol: {char}")  # \u8f93\u51fa\uff1aCJK Symbol: \u4e16, CJK Symbol: \u754c<\/p>\n
        <\/code><\/pre>\n<\/p>\n
        \u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u8bc6\u522b\u51faCJK\uff08\u4e2d\u65e5\u97e9\uff09\u5b57\u7b26\u7b49\u7279\u5b9a\u8bed\u8a00\u7b26\u53f7\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
        \u56db\u3001\u5e94\u7528\u573a\u666f\u548c\u6700\u4f73\u5b9e\u8df5<\/p>\n<\/p>\n
          \n
        1. \n
          \u6587\u672c\u6e05\u7406<\/strong><\/p>\n<\/p>\n
          \u5728\u81ea\u7136\u8bed\u8a00\u5904\u7406\uff08NLP\uff09\u548c\u6570\u636e\u6e05\u7406\u4e2d\uff0c\u8bc6\u522b\u548c\u53bb\u9664\u7b26\u53f7\u662f\u5e38\u89c1\u7684\u9700\u6c42\u3002\u7ed3\u5408\u6b63\u5219\u8868\u8fbe\u5f0f\u548c\u5b57\u7b26\u4e32\u65b9\u6cd5\uff0c\u53ef\u4ee5\u9ad8\u6548\u5730\u5904\u7406\u5927\u89c4\u6a21\u6587\u672c\u6570\u636e\u3002<\/p>\n<\/p>\n<\/li>\n
        2. \n
          \u6570\u636e\u9a8c\u8bc1<\/strong><\/p>\n<\/p>\n
          \u5728\u8f93\u5165\u9a8c\u8bc1\u4e2d\uff0c\u901a\u8fc7\u8bc6\u522b\u548c\u8fc7\u6ee4\u4e0d\u5408\u6cd5\u7684\u7b26\u53f7\uff0c\u786e\u4fdd\u6570\u636e\u7684\u6709\u6548\u6027\u548c\u5b89\u5168\u6027\u3002\u4f8b\u5982\uff0c\u5728\u7528\u6237\u8f93\u5165\u7684\u90ae\u7bb1\u5730\u5740\u6216\u7535\u8bdd\u53f7\u7801\u4e2d\u8bc6\u522b\u4e0d\u5141\u8bb8\u7684\u7b26\u53f7\u3002<\/p>\n<\/p>\n<\/li>\n
        3. \n
          \u65e5\u5fd7\u5206\u6790<\/strong><\/p>\n<\/p>\n
          \u5728\u65e5\u5fd7\u5206\u6790\u4e2d\uff0c\u8bc6\u522b\u7279\u5b9a\u7b26\u53f7\u53ef\u4ee5\u5e2e\u52a9\u63d0\u53d6\u91cd\u8981\u4fe1\u606f\uff0c\u8fdb\u884c\u4e8b\u4ef6\u76d1\u63a7\u548c\u6545\u969c\u6392\u67e5\u3002<\/p>\n<\/p>\n<\/li>\n
        4. \n
          \u56fd\u9645\u5316\u5e94\u7528<\/strong><\/p>\n<\/p>\n
          \u5bf9\u4e8e\u56fd\u9645\u5316\u5e94\u7528\uff0c\u6b63\u786e\u8bc6\u522b\u548c\u5904\u7406\u4e0d\u540c\u8bed\u8a00\u7684\u7b26\u53f7\u662f\u5b9e\u73b0\u5168\u7403\u5316\u652f\u6301\u7684\u91cd\u8981\u73af\u8282\u3002\u4f7f\u7528Unicode\u53ef\u4ee5\u786e\u4fdd\u5e94\u7528\u7a0b\u5e8f\u5bf9\u591a\u8bed\u8a00\u7b26\u53f7\u7684\u517c\u5bb9\u6027\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
          \u603b\u7ed3\u6765\u8bf4\uff0cPython\u63d0\u4f9b\u4e86\u591a\u79cd\u8bc6\u522b\u7b26\u53f7\u7684\u65b9\u6cd5\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u63d0\u9ad8\u4ee3\u7801\u7684\u6548\u7387\u548c\u53ef\u8bfb\u6027\u3002\u901a\u8fc7\u7ed3\u5408\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u3001\u5b57\u7b26\u4e32\u65b9\u6cd5\u548cUnicode\u5b57\u7b26\u5e93\uff0c\u53ef\u4ee5\u5904\u7406\u5404\u79cd\u590d\u6742\u7684\u7b26\u53f7\u8bc6\u522b\u4efb\u52a1\u3002<\/p>\n<\/p>\n
          \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
           \u5982\u4f55\u5728Python\u4e2d\u8bc6\u522b\u7279\u5b9a\u7684\u7b26\u53f7\uff1f<\/strong>
          \u5728Python\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5\u6216\u6b63\u5219\u8868\u8fbe\u5f0f\u6765\u8bc6\u522b\u7279\u5b9a\u7684\u7b26\u53f7\u3002\u4f7f\u7528in<\/code>\u5173\u952e\u5b57\u53ef\u4ee5\u5feb\u901f\u68c0\u67e5\u7b26\u53f7\u662f\u5426\u5b58\u5728\u4e8e\u5b57\u7b26\u4e32\u4e2d\u3002\u4f8b\u5982\uff0cif "@" in my_string:<\/code>\u53ef\u4ee5\u5224\u65ad\u5b57\u7b26\u4e32\u4e2d\u662f\u5426\u5305\u542b\u201c@\u201d\u7b26\u53f7\u3002\u5bf9\u4e8e\u66f4\u590d\u6742\u7684\u9700\u6c42\uff0c\u53ef\u4ee5\u4f7f\u7528re<\/code>\u6a21\u5757\u4e2d\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u5e2e\u52a9\u60a8\u627e\u5230\u591a\u79cd\u7b26\u53f7\u6216\u7b26\u53f7\u7ec4\u5408\u3002<\/p>\n
          Python\u4e2d\u6709\u54ea\u4e9b\u5e38\u7528\u7684\u65b9\u6cd5\u6765\u5904\u7406\u5b57\u7b26\u4e32\u4e2d\u7684\u7b26\u53f7\uff1f<\/strong>
          \u5904\u7406\u5b57\u7b26\u4e32\u4e2d\u7684\u7b26\u53f7\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u3002str.replace()<\/code>\u53ef\u4ee5\u7528\u6765\u66ff\u6362\u7279\u5b9a\u7b26\u53f7\uff1bstr.split()<\/code>\u53ef\u4ee5\u6309\u7b26\u53f7\u5206\u5272\u5b57\u7b26\u4e32\uff1b\u800cstr.strip()<\/code>\u53ef\u4ee5\u53bb\u9664\u5b57\u7b26\u4e32\u4e24\u7aef\u7684\u7b26\u53f7\u6216\u7a7a\u683c\u3002\u6b64\u5916\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u4e5f\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5de5\u5177\u6765\u5904\u7406\u548c\u5339\u914d\u5404\u79cd\u7b26\u53f7\u3002<\/p>\n
          \u5982\u4f55\u4f7f\u7528Python\u8bc6\u522b\u6587\u672c\u4e2d\u7684\u6240\u6709\u7b26\u53f7\uff1f<\/strong>
          \u82e5\u60f3\u8bc6\u522b\u6587\u672c\u4e2d\u7684\u6240\u6709\u7b26\u53f7\uff0c\u53ef\u4ee5\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u5e93re<\/code>\u3002\u901a\u8fc7\u5b9a\u4e49\u5339\u914d\u975e\u5b57\u6bcd\u548c\u975e\u6570\u5b57\u7684\u6a21\u5f0f\uff0c\u4f8b\u5982[^\\w\\s]<\/code>\uff0c\u53ef\u4ee5\u63d0\u53d6\u6587\u672c\u4e2d\u7684\u6240\u6709\u7b26\u53f7\u3002\u4f7f\u7528re.findall()<\/code>\u51fd\u6570\u53ef\u4ee5\u8fd4\u56de\u4e00\u4e2a\u5217\u8868\uff0c\u5305\u542b\u6587\u672c\u4e2d\u6240\u6709\u5339\u914d\u7684\u7b26\u53f7\uff0c\u65b9\u4fbf\u540e\u7eed\u5904\u7406\u548c\u5206\u6790\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u8bc6\u522b\u7b26\u53f7\u7684\u4e3b\u8981\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u3001\u5b57\u7b26\u4e32\u65b9\u6cd5\u548cUnicode\u5b57\u7b26\u5e93\u3002\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u5904\u7406\u590d\u6742\u7b26\u53f7\u5339 […]","protected":false},"author":3,"featured_media":950829,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/950827"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=950827"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/950827\/revisions"}],"predecessor-version":[{"id":950832,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/950827\/revisions\/950832"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/950829"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=950827"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=950827"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=950827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}