{"id":94287,"date":"2026-08-14T07:25:47","date_gmt":"2026-08-13T23:25:47","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/94287.html"},"modified":"2026-08-14T07:25:47","modified_gmt":"2026-08-13T23:25:47","slug":"pyqt-qtextboundaryfinder%e7%b1%bb%e8%af%a6%e8%a7%a3%ef%bc%9a%e7%b2%be%e5%87%86%e5%ae%9a%e4%bd%8d%e6%96%87%e6%9c%ac%e8%be%b9%e7%95%8c","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/94287.html","title":{"rendered":"PyQt QTextBoundaryFinder\u7c7b\u8be6\u89e3\uff1a\u7cbe\u51c6\u5b9a\u4f4d\u6587\u672c\u8fb9\u754c"},"content":{"rendered":"<\/p>\n<h4>PyQt QTextBoundaryFinder\u7c7b\u8be6\u89e3&#xff1a;\u7cbe\u51c6\u5b9a\u4f4d\u6587\u672c\u8fb9\u754c<\/h4>\n<ul>\n<li>\u4e00\u3001QTextBoundaryFinder\u7c7b\u8be6\u89e3<\/li>\n<li>\n<ul>\n<li>1\u3001\u5f15\u8a00&#xff1a;\u4ec0\u4e48\u662f\u6587\u672c\u8fb9\u754c\u67e5\u627e&#xff1f;<\/li>\n<li>2\u3001 \u6838\u5fc3\u6982\u5ff5\u4e0e\u8fb9\u754c\u7c7b\u578b<\/li>\n<li>3\u3001 \u6784\u9020\u51fd\u6570\u4e0e\u57fa\u672c\u8bbe\u7f6e<\/li>\n<li>\n<ul>\n<li>3.1 \u3001\u5bfc\u5165\u4e0e\u521b\u5efa<\/li>\n<li>3.2 \u5173\u952e\u5c5e\u6027\u8bbe\u7f6e<\/li>\n<\/ul>\n<\/li>\n<li>4\u3001\u6ce8\u610f\u4e8b\u9879\u4e0e\u6700\u4f73\u5b9e\u8df5<\/li>\n<li>\n<ul>\n<li>4.1\u3001 \u6027\u80fd\u8003\u8651<\/li>\n<li>4.2 \u3001\u8fb9\u754c\u5904\u7406\u7ec6\u8282<\/li>\n<li>4.3\u3001 \u9519\u8bef\u5904\u7406<\/li>\n<li>4.4\u3001 \u4e0ePython\u6807\u51c6\u5e93\u7684\u5bf9\u6bd4<\/li>\n<\/ul>\n<\/li>\n<li>5\u3001 \u603b\u7ed3<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001\u4ee3\u7801\u793a\u4f8b<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260813232542-6a7e5276f414d.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h2>\u4e00\u3001QTextBoundaryFinder\u7c7b\u8be6\u89e3<\/h2>\n<h3>1\u3001\u5f15\u8a00&#xff1a;\u4ec0\u4e48\u662f\u6587\u672c\u8fb9\u754c\u67e5\u627e&#xff1f;<\/h3>\n<p>\u5728\u6587\u672c\u5904\u7406\u548c\u56fd\u9645\u5316&#xff08;i18n&#xff09;\u5f00\u53d1\u4e2d&#xff0c;\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u7cbe\u786e\u5730\u5b9a\u4f4d\u6587\u672c\u4e2d\u7684\u903b\u8f91\u5355\u5143\u8fb9\u754c&#xff0c;\u4f8b\u5982&#xff1a;<\/p>\n<ul>\n<li>\u5c06\u5149\u6807\u79fb\u52a8\u5230\u4e0b\u4e00\u4e2a\u5355\u8bcd\u7684\u5f00\u5934\u6216\u7ed3\u5c3e<\/li>\n<li>\u5728\u53e5\u5b50\u672b\u5c3e\u63d2\u5165\u6807\u70b9<\/li>\n<li>\u6309\u884c&#xff08;\u89c6\u89c9\u6362\u884c&#xff09;\u8fdb\u884c\u6587\u672c\u5e03\u5c40<\/li>\n<li>\u6309\u5b57\u7b26&#xff08;\u7528\u6237\u611f\u77e5\u7684\u5b57\u7b26&#xff09;\u8fdb\u884c\u9ad8\u4eae\u6216\u9009\u62e9<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u64cd\u4f5c\u770b\u4f3c\u7b80\u5355&#xff0c;\u4f46\u5728\u5904\u7406\u591a\u8bed\u8a00\u6587\u672c&#xff08;\u5c24\u5176\u662f\u5305\u542b\u7ec4\u5408\u5b57\u7b26\u3001\u4ee3\u7406\u5bf9\u3001\u8fde\u5b57\u7b49\u590d\u6742\u60c5\u51b5\u7684\u6587\u672c&#xff09;\u65f6&#xff0c;\u76f4\u63a5\u57fa\u4e8e\u5b57\u8282\u6216UTF-16\u7801\u70b9\u8fdb\u884c\u7d22\u5f15\u8ba1\u7b97\u6781\u6613\u51fa\u9519\u3002<\/p>\n<p>QTextBoundaryFinder \u662f PyQt6&#xff08;Qt\u6846\u67b6&#xff09;\u4e2d\u4e13\u95e8\u7528\u4e8e\u89e3\u51b3\u6b64\u7c7b\u95ee\u9898\u7684\u6838\u5fc3\u5de5\u5177\u7c7b\u3002\u5b83\u9075\u5faa Unicode \u6587\u672c\u5206\u5272\u7b97\u6cd5&#xff08;Unicode Text Segmentation&#xff09;&#xff0c;\u80fd\u591f\u667a\u80fd\u3001\u51c6\u786e\u5730\u627e\u5230\u6587\u672c\u4e2d\u5404\u79cd\u7c7b\u578b\u7684\u8fb9\u754c\u4f4d\u7f6e\u3002<\/p>\n<p>\u672c\u6587\u5c06\u6df1\u5165\u89e3\u6790 QTextBoundaryFinder \u7684&#xff1a;<\/p>\n<ul>\n<li>\u6838\u5fc3\u6982\u5ff5\u4e0e\u8fb9\u754c\u7c7b\u578b<\/li>\n<li>\u6784\u9020\u51fd\u6570\u4e0e\u57fa\u672c\u7528\u6cd5<\/li>\n<li>\u904d\u5386\u4e0e\u67e5\u8be2API<\/li>\n<li>\u5b9e\u9645\u5e94\u7528\u573a\u666f\u4e0e\u4ee3\u7801\u793a\u4f8b<\/li>\n<li>\u6ce8\u610f\u4e8b\u9879\u4e0e\u6700\u4f73\u5b9e\u8df5<\/li>\n<\/ul>\n<h3>2\u3001 \u6838\u5fc3\u6982\u5ff5\u4e0e\u8fb9\u754c\u7c7b\u578b<\/h3>\n<p>QTextBoundaryFinder \u652f\u6301\u67e5\u627e\u56db\u79cd\u4e3b\u8981\u7684\u6587\u672c\u8fb9\u754c&#xff0c;\u5bf9\u5e94 QTextBoundaryFinder.BoundaryType \u679a\u4e3e&#xff1a;<\/p>\n<table>\n<tr>\u8fb9\u754c\u7c7b\u578b (BoundaryType)\u5e38\u91cf\u540d\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td align=\"left\">Grapheme<\/td>\n<td align=\"left\">Grapheme<\/td>\n<td align=\"left\">\u5b57\u5f62\u7c07\u8fb9\u754c\u3002\u8fd9\u662f\u7528\u6237\u611f\u77e5\u7684\u4e00\u4e2a\u201c\u5b57\u7b26\u201d&#xff0c;\u53ef\u80fd\u7531\u591a\u4e2aUnicode\u7801\u70b9\u7ec4\u5408\u800c\u6210&#xff08;\u5982 &#034;\u00e9&#034; &#061; e &#043; \u00b4&#xff09;\u3002<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Word<\/td>\n<td align=\"left\">Word<\/td>\n<td align=\"left\">\u5355\u8bcd\u8fb9\u754c\u3002\u6839\u636e\u8bed\u8a00\u89c4\u5219\u786e\u5b9a\u5355\u8bcd\u7684\u8d77\u6b62&#xff0c;\u7528\u4e8e\u5149\u6807\u79fb\u52a8\u3001\u5355\u8bcd\u9009\u62e9\u7b49\u3002<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Line<\/td>\n<td align=\"left\">Line<\/td>\n<td align=\"left\">\u884c\u8fb9\u754c\u3002\u8003\u8651\u6362\u884c\u673a\u4f1a&#xff08;\u5982\u7a7a\u683c\u3001\u8fde\u5b57\u7b26&#xff09;&#xff0c;\u7528\u4e8e\u81ea\u52a8\u6362\u884c\u548c\u6587\u672c\u5e03\u5c40\u3002<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Sentence<\/td>\n<td align=\"left\">Sentence<\/td>\n<td align=\"left\">\u53e5\u5b50\u8fb9\u754c\u3002\u6839\u636e\u6807\u70b9\u3001\u5927\u5199\u5b57\u6bcd\u7b49\u89c4\u5219\u5224\u65ad\u53e5\u5b50\u7ed3\u675f&#xff0c;\u7528\u4e8e\u6587\u672c\u5206\u6790\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u91cd\u8981\u533a\u522b&#xff1a;<\/p>\n<ul>\n<li>Grapheme \u2260 Code Point&#xff08;Unicode\u7801\u70b9&#xff09;\u3002\u4f8b\u5982&#xff0c;\u8868\u60c5\u7b26\u53f7 &#034;&#x1f468;\u200d&#x1f469;\u200d&#x1f467;\u200d&#x1f466;&#034;&#xff08;\u5bb6\u5ead\u8868\u60c5&#xff09;\u7531\u591a\u4e2a\u7801\u70b9&#xff08;U&#043;1F468, U&#043;200D, U&#043;1F469, U&#043;200D, U&#043;1F467, U&#043;200D, U&#043;1F466&#xff09;\u7ec4\u5408\u800c\u6210&#xff0c;\u4f46\u7528\u6237\u89c6\u5176\u4e3a\u4e00\u4e2a\u201c\u5b57\u7b26\u201d\u3002QTextBoundaryFinder \u80fd\u6b63\u786e\u8bc6\u522b\u5176\u4e3a\u4e00\u4e2a\u5b57\u5f62\u7c07\u3002<\/li>\n<li>Word \u8fb9\u754c\u4f9d\u8d56\u4e8e\u8bed\u8a00\u3002QTextBoundaryFinder \u9ed8\u8ba4\u4f7f\u7528\u57fa\u4e8eUnicode\u6807\u51c6\u7684\u901a\u7528\u89c4\u5219&#xff0c;\u4f46\u53ef\u901a\u8fc7 QTextBoundaryFinder.setLocale() \u4e3a\u7279\u5b9a\u8bed\u8a00&#xff08;\u5982\u4e2d\u6587\u3001\u65e5\u6587&#xff09;\u4f18\u5316\u3002<\/li>\n<\/ul>\n<h3>3\u3001 \u6784\u9020\u51fd\u6570\u4e0e\u57fa\u672c\u8bbe\u7f6e<\/h3>\n<h4>3.1 \u3001\u5bfc\u5165\u4e0e\u521b\u5efa<\/h4>\n<p><span class=\"token keyword\">from<\/span> PyQt6<span class=\"token punctuation\">.<\/span>QtCore <span class=\"token keyword\">import<\/span> QTextBoundaryFinder<\/p>\n<p><span class=\"token comment\"># \u65b9\u6cd51&#xff1a;Word \u5355\u8bcd\u8fb9\u754c<\/span><br \/>\ntext <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;Hello, world! \u4f60\u597d&#xff0c;\u4e16\u754c&#xff01;&#034;<\/span><br \/>\nfinder1 <span class=\"token operator\">&#061;<\/span> QTextBoundaryFinder<span class=\"token punctuation\">(<\/span>QTextBoundaryFinder<span class=\"token punctuation\">.<\/span>BoundaryType<span class=\"token punctuation\">.<\/span>Word<span class=\"token punctuation\">,<\/span> text<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># \u65b9\u6cd52&#xff1a;\u76f4\u63a5\u4f20\u5165\u5b57\u7b26\u4e32<\/span><br \/>\nfinder2 <span class=\"token operator\">&#061;<\/span> QTextBoundaryFinder<span class=\"token punctuation\">(<\/span>QTextBoundaryFinder<span class=\"token punctuation\">.<\/span>BoundaryType<span class=\"token punctuation\">.<\/span>Word<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Hello, world!&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># \u65b9\u6cd53&#xff1a;Grapheme \u5b57\u5f62\u8fb9\u754c&#xff0c;\u53ea\u80fd\u65b0\u5efa\u5b9e\u4f8b<\/span><br \/>\nfinder3 <span class=\"token operator\">&#061;<\/span> QTextBoundaryFinder<span class=\"token punctuation\">(<\/span>QTextBoundaryFinder<span class=\"token punctuation\">.<\/span>BoundaryType<span class=\"token punctuation\">.<\/span>Grapheme<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Some text&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<h4>3.2 \u5173\u952e\u5c5e\u6027\u8bbe\u7f6e<\/h4>\n<p><span class=\"token keyword\">from<\/span> PyQt6<span class=\"token punctuation\">.<\/span>QtCore <span class=\"token keyword\">import<\/span> QLocale<span class=\"token punctuation\">,<\/span> QTextBoundaryFinder<\/p>\n<p><span class=\"token comment\"># \u53ea\u80fd\u5728\u6784\u9020\u65f6\u6307\u5b9a\u8fb9\u754c\u7c7b\u578b\u548c\u6587\u672c&#xff0c;\u540e\u7eed\u65e0\u6cd5\u4fee\u6539<\/span><br \/>\ntext_origin <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;Sample text&#034;<\/span><br \/>\nfinder <span class=\"token operator\">&#061;<\/span> QTextBoundaryFinder<span class=\"token punctuation\">(<\/span>QTextBoundaryFinder<span class=\"token punctuation\">.<\/span>BoundaryType<span class=\"token punctuation\">.<\/span>Word<span class=\"token punctuation\">,<\/span> text_origin<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># 1. \u5207\u6362\u8fb9\u754c\u7c7b\u578b&#xff1a;\u53ea\u80fd\u65b0\u5efa\u5bf9\u8c61<\/span><br \/>\nfinder_line <span class=\"token operator\">&#061;<\/span> QTextBoundaryFinder<span class=\"token punctuation\">(<\/span>QTextBoundaryFinder<span class=\"token punctuation\">.<\/span>BoundaryType<span class=\"token punctuation\">.<\/span>Line<span class=\"token punctuation\">,<\/span> text_origin<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># 2. \u4fee\u6539\u6587\u672c&#xff1a;\u53ea\u80fd\u65b0\u5efa\u5bf9\u8c61<\/span><br \/>\nnew_text <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;New text&#034;<\/span><br \/>\nfinder_newtext <span class=\"token operator\">&#061;<\/span> QTextBoundaryFinder<span class=\"token punctuation\">(<\/span>QTextBoundaryFinder<span class=\"token punctuation\">.<\/span>BoundaryType<span class=\"token punctuation\">.<\/span>Word<span class=\"token punctuation\">,<\/span> new_text<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># 3. \u533a\u57dfLocale\u8bf4\u660e&#xff1a;PyQt6 QTextBoundaryFinder \u6ca1\u6709 setLocale \u63a5\u53e3<\/span><br \/>\n<span class=\"token comment\"># Qt C&#043;&#043; \u624d\u6709 setLocale&#xff0c;Python\u7ed1\u5b9a\u672a\u66b4\u9732&#xff0c;\u4e2d\u6587\u5206\u8bcd\u89c4\u5219\u7531Qt\u5e95\u5c42\u81ea\u52a8\u6839\u636e\u7cfb\u7edf\/\u5168\u5c40locale\u5904\u7406<\/span><br \/>\ncn_locale <span class=\"token operator\">&#061;<\/span> QLocale<span class=\"token punctuation\">(<\/span>QLocale<span class=\"token punctuation\">.<\/span>Language<span class=\"token punctuation\">.<\/span>Chinese<span class=\"token punctuation\">,<\/span> QLocale<span class=\"token punctuation\">.<\/span>Country<span class=\"token punctuation\">.<\/span>China<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token comment\"># \u65e0\u6cd5\u4f20\u7ed9finder&#xff0c;\u5982\u9700\u5168\u5c40\u751f\u6548\u53ea\u80fd\u8bbe\u7f6e\u5e94\u7528\u5168\u5c40QLocale<\/span><\/p>\n<p><span class=\"token comment\"># 4. \u5b57\u7b26\u957f\u5ea6\u624b\u52a8\u8ba1\u7b97&#xff0c;\u67e5\u627e\u5668\u53ea\u6709position()<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u539f\u6587\u672c\u5b57\u7b26\u957f\u5ea6&#xff1a;&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>text_origin<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u67e5\u627e\u5668\u5f53\u524d\u4f4d\u7f6e&#xff1a;&#034;<\/span><span class=\"token punctuation\">,<\/span> finder<span class=\"token punctuation\">.<\/span>position<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># \u6f14\u793a\u904d\u5386\u5355\u8bcd\u8fb9\u754c&#xff08;PyQt6\u6807\u51c6\u7528\u6cd5&#xff09;<\/span><br \/>\npos <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><br \/>\nwords <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    next_p <span class=\"token operator\">&#061;<\/span> finder<span class=\"token punctuation\">.<\/span>toNextBoundary<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> next_p <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">break<\/span><br \/>\n    words<span class=\"token punctuation\">.<\/span>append<span class=\"token punctuation\">(<\/span>text_origin<span class=\"token punctuation\">[<\/span>pos<span class=\"token punctuation\">:<\/span>next_p<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>strip<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    pos <span class=\"token operator\">&#061;<\/span> next_p<\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6309Word\u8fb9\u754c\u62c6\u5206\u7ed3\u679c&#xff1a;&#034;<\/span><span class=\"token punctuation\">,<\/span> words<span class=\"token punctuation\">)<\/span><\/p>\n<h3>4\u3001\u6ce8\u610f\u4e8b\u9879\u4e0e\u6700\u4f73\u5b9e\u8df5<\/h3>\n<h4>4.1\u3001 \u6027\u80fd\u8003\u8651<\/h4>\n<li>\n<p>\u590d\u7528\u67e5\u627e\u5668\u5bf9\u8c61&#xff1a;\u5982\u679c\u9700\u8981\u591a\u6b21\u5bf9\u540c\u4e00\u6587\u672c\u8fdb\u884c\u8fb9\u754c\u67e5\u627e&#xff0c;\u5e94\u590d\u7528 QTextBoundaryFinder \u5bf9\u8c61&#xff0c;\u800c\u4e0d\u662f\u6bcf\u6b21\u521b\u5efa\u65b0\u5bf9\u8c61\u3002<\/p>\n<p> <span class=\"token comment\"># \u4e0d\u63a8\u8350&#xff1a;\u6bcf\u6b21\u521b\u5efa\u65b0\u5bf9\u8c61<\/span><br \/>\n<span class=\"token keyword\">for<\/span> i <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    finder <span class=\"token operator\">&#061;<\/span> QTextBoundaryFinder<span class=\"token punctuation\">(<\/span>QTextBoundaryFinder<span class=\"token punctuation\">.<\/span>BoundaryType<span class=\"token punctuation\">.<\/span>Word<span class=\"token punctuation\">,<\/span> text<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token comment\"># &#8230;\u64cd\u4f5c<\/span><\/p>\n<p><span class=\"token comment\"># \u63a8\u8350&#xff1a;\u590d\u7528\u5bf9\u8c61<\/span><br \/>\nfinder <span class=\"token operator\">&#061;<\/span> QTextBoundaryFinder<span class=\"token punctuation\">(<\/span>QTextBoundaryFinder<span class=\"token punctuation\">.<\/span>BoundaryType<span class=\"token punctuation\">.<\/span>Word<span class=\"token punctuation\">,<\/span> text<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">for<\/span> i <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    finder<span class=\"token punctuation\">.<\/span>toStart<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token comment\"># &#8230;\u64cd\u4f5c<\/span>\n <\/li>\n<li>\n<p>\u907f\u514d\u9891\u7e41\u7684\u6587\u672c\u4fee\u6539&#xff1a;QTextBoundaryFinder \u4e0d\u8ddf\u8e2a\u6587\u672c\u4fee\u6539\u3002\u5982\u679c\u6587\u672c\u88ab\u66f4\u6539&#xff0c;\u5e94\u91cd\u65b0\u521b\u5efa\u6216\u8c03\u7528 setText()\u3002<\/p>\n<\/li>\n<h4>4.2 \u3001\u8fb9\u754c\u5904\u7406\u7ec6\u8282<\/h4>\n<li>\n<p>\u8fb9\u754c\u4f4d\u7f6e\u7684\u542b\u4e49&#xff1a;\u8fb9\u754c\u4f4d\u7f6e\u662f\u4e24\u4e2a\u5355\u5143\u4e4b\u95f4\u7684\u7d22\u5f15\u3002\u4f8b\u5982&#xff0c;\u5bf9\u4e8e\u6587\u672c &#034;Hello&#034;&#xff0c;\u5355\u8bcd\u8fb9\u754c\u5728\u7d22\u5f150&#xff08;H\u4e4b\u524d&#xff09;\u548c5&#xff08;o\u4e4b\u540e&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u7a7a\u6587\u672c\u548c\u8fb9\u754c&#xff1a;\u7a7a\u6587\u672c&#xff08;&#034;&#034;&#xff09;\u6ca1\u6709\u8fb9\u754c\u3002toStart() \u5c06\u4f4d\u7f6e\u8bbe\u4e3a-1&#xff0c;toEnd() \u5c06\u4f4d\u7f6e\u8bbe\u4e3a0\u3002<\/p>\n<\/li>\n<li>\n<p>\u6807\u70b9\u548c\u7a7a\u683c\u7684\u5904\u7406&#xff1a;\u6839\u636eUnicode\u6807\u51c6\u548c\u533a\u57df\u8bbe\u7f6e&#xff0c;\u6807\u70b9\u548c\u7a7a\u683c\u53ef\u80fd\u88ab\u89c6\u4e3a\u72ec\u7acb\u7684&#034;\u5355\u8bcd&#034;\u6216\u9644\u7740\u5728\u76f8\u90bb\u5355\u8bcd\u4e0a\u3002\u4f7f\u7528 setLocale() \u53ef\u4ee5\u8c03\u6574\u6b64\u884c\u4e3a\u3002<\/p>\n<\/li>\n<h4>4.3\u3001 \u9519\u8bef\u5904\u7406<\/h4>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">safe_boundary_find<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">,<\/span> boundary_type<span class=\"token punctuation\">,<\/span> index<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u5b89\u5168\u7684\u8fb9\u754c\u67e5\u627e&#xff0c;\u5904\u7406\u8fb9\u754c\u60c5\u51b5&#034;&#034;&#034;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> text <span class=\"token keyword\">or<\/span> index <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0<\/span> <span class=\"token keyword\">or<\/span> index <span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><\/p>\n<p>    finder <span class=\"token operator\">&#061;<\/span> QTextBoundaryFinder<span class=\"token punctuation\">(<\/span>boundary_type<span class=\"token punctuation\">,<\/span> text<span class=\"token punctuation\">)<\/span><br \/>\n    result <span class=\"token operator\">&#061;<\/span> finder<span class=\"token punctuation\">.<\/span>toNextBoundary<span class=\"token punctuation\">(<\/span>index<span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token comment\"># \u5904\u7406\u67e5\u627e\u5668\u8fd4\u56de-1\u7684\u60c5\u51b5<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> result <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token comment\"># \u5982\u679cindex\u5df2\u5728\u672b\u5c3e&#xff0c;\u8fd4\u56de\u6587\u672c\u957f\u5ea6<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> index <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token comment\"># \u5426\u5219\u8fd4\u56de-1\u8868\u793a\u672a\u627e\u5230<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> result<\/p>\n<h4>4.4\u3001 \u4e0ePython\u6807\u51c6\u5e93\u7684\u5bf9\u6bd4<\/h4>\n<table>\n<tr>\u529f\u80fdQTextBoundaryFinderPython\u6807\u51c6\u5e93<\/tr>\n<tbody>\n<tr>\n<td align=\"left\">Unicode\u6807\u51c6\u9075\u5faa<\/td>\n<td align=\"left\">\u5b8c\u6574\u9075\u5faaUnicode\u6587\u672c\u5206\u5272\u7b97\u6cd5<\/td>\n<td align=\"left\">unicodedata \u6a21\u5757\u63d0\u4f9b\u90e8\u5206\u529f\u80fd<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\u591a\u8bed\u8a00\u652f\u6301<\/td>\n<td align=\"left\">\u901a\u8fc7QLocale\u652f\u6301\u533a\u57df\u7279\u5b9a\u89c4\u5219<\/td>\n<td align=\"left\">\u6709\u9650&#xff0c;\u4f9d\u8d56\u7b2c\u4e09\u65b9\u5e93&#xff08;\u5982spaCy\u3001NLTK&#xff09;<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\u6027\u80fd<\/td>\n<td align=\"left\">C&#043;&#043;\u5b9e\u73b0&#xff0c;\u6027\u80fd\u9ad8<\/td>\n<td align=\"left\">\u7eafPython&#xff0c;\u6027\u80fd\u8f83\u4f4e<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\u96c6\u6210\u5ea6<\/td>\n<td align=\"left\">\u4e0eQt\u6587\u672c\u7cfb\u7edf\u6df1\u5ea6\u96c6\u6210<\/td>\n<td align=\"left\">\u72ec\u7acb&#xff0c;\u9700\u8981\u624b\u52a8\u96c6\u6210<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\u4f7f\u7528\u573a\u666f<\/td>\n<td align=\"left\">Qt\/PyQt\u5e94\u7528\u4e2d\u7684\u6587\u672c\u5904\u7406<\/td>\n<td align=\"left\">\u901a\u7528Python\u6587\u672c\u5904\u7406<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>5\u3001 \u603b\u7ed3<\/h3>\n<p>QTextBoundaryFinder \u662fPyQt6\u4e2d\u5904\u7406\u6587\u672c\u8fb9\u754c\u7684\u5f3a\u5927\u5de5\u5177&#xff0c;\u5b83&#xff1a;<\/p>\n<li>\u51c6\u786e\u53ef\u9760&#xff1a;\u4e25\u683c\u9075\u5faaUnicode\u6807\u51c6&#xff0c;\u6b63\u786e\u5904\u7406\u5404\u79cd\u8bed\u8a00\u7684\u590d\u6742\u5b57\u7b26\u3002<\/li>\n<li>\u529f\u80fd\u5168\u9762&#xff1a;\u652f\u6301\u5b57\u5f62\u7c07\u3001\u5355\u8bcd\u3001\u884c\u3001\u53e5\u5b50\u56db\u79cd\u8fb9\u754c\u7c7b\u578b\u3002<\/li>\n<li>\u9ad8\u6548\u6613\u7528&#xff1a;\u63d0\u4f9b\u8fed\u4ee3\u548c\u76f4\u63a5\u67e5\u8be2\u4e24\u79cdAPI&#xff0c;\u6ee1\u8db3\u4e0d\u540c\u573a\u666f\u9700\u6c42\u3002<\/li>\n<li>\u6df1\u5ea6\u96c6\u6210&#xff1a;\u4e0eQt\u6587\u672c\u7cfb\u7edf\u65e0\u7f1d\u534f\u4f5c&#xff0c;\u7279\u522b\u9002\u5408GUI\u5e94\u7528\u5f00\u53d1\u3002<\/li>\n<p>\u9002\u7528\u573a\u666f&#xff1a;<\/p>\n<ul>\n<li>\u6587\u672c\u7f16\u8f91\u5668\u4e2d\u7684\u5149\u6807\u79fb\u52a8\u3001\u9009\u62e9<\/li>\n<li>\u5bcc\u6587\u672c\u5e03\u5c40\u548c\u81ea\u52a8\u6362\u884c<\/li>\n<li>\u591a\u8bed\u8a00\u6587\u672c\u5206\u6790\u548c\u5904\u7406<\/li>\n<li>\u9700\u8981\u7cbe\u786e\u6587\u672c\u5206\u5272\u7684\u4efb\u4f55\u5e94\u7528<\/li>\n<\/ul>\n<p>\u5b66\u4e60\u5efa\u8bae&#xff1a;<\/p>\n<li>\u4ece\u5b57\u5f62\u7c07\u8fb9\u754c\u5f00\u59cb\u7406\u89e3&#xff0c;\u8fd9\u662f\u5176\u4ed6\u8fb9\u754c\u7c7b\u578b\u7684\u57fa\u7840\u3002<\/li>\n<li>\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u4f7f\u7528&#xff0c;\u89c2\u5bdf\u4e0d\u540c\u8bed\u8a00\u6587\u672c\u7684\u8fb9\u754c\u884c\u4e3a\u3002<\/li>\n<li>\u53c2\u8003 Unicode\u6587\u672c\u5206\u5272\u6807\u51c6 \u6df1\u5165\u7406\u89e3\u7b97\u6cd5\u539f\u7406\u3002<\/li>\n<h2>\u4e8c\u3001\u4ee3\u7801\u793a\u4f8b<\/h2>\n<p><span class=\"token keyword\">from<\/span> PyQt6<span class=\"token punctuation\">.<\/span>QtCore <span class=\"token keyword\">import<\/span> QTextBoundaryFinder<br \/>\n<span class=\"token keyword\">import<\/span> sys<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">demo_grapheme_boundary<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;1. \u5b57\u5f62\u8fb9\u754c&#xff1a;\u5904\u7406emoji\u3001\u7ec4\u5408\u5b57\u7b26&#034;&#034;&#034;<\/span><br \/>\n    text <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;&#x1f600;a\u00e9\u6c49&#034;<\/span><br \/>\n    finder <span class=\"token operator\">&#061;<\/span> QTextBoundaryFinder<span class=\"token punctuation\">(<\/span>QTextBoundaryFinder<span class=\"token punctuation\">.<\/span>BoundaryType<span class=\"token punctuation\">.<\/span>Grapheme<span class=\"token punctuation\">,<\/span> text<span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#061;&#061;&#061;&#061;&#061; \u5b57\u5f62\u7c07\u8fb9\u754c\u904d\u5386 &#061;&#061;&#061;&#061;&#061;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    positions <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><br \/>\n    pos <span class=\"token operator\">&#061;<\/span> finder<span class=\"token punctuation\">.<\/span>position<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        pos <span class=\"token operator\">&#061;<\/span> finder<span class=\"token punctuation\">.<\/span>toNextBoundary<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> pos <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">break<\/span><br \/>\n        positions<span class=\"token punctuation\">.<\/span>append<span class=\"token punctuation\">(<\/span>pos<span class=\"token punctuation\">)<\/span><\/p>\n<p>    start <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> p <span class=\"token keyword\">in<\/span> positions<span class=\"token punctuation\">:<\/span><br \/>\n        char <span class=\"token operator\">&#061;<\/span> text<span class=\"token punctuation\">[<\/span>start<span class=\"token punctuation\">:<\/span>p<span class=\"token punctuation\">]<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;[<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>start<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>p<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">] -&gt; <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token builtin\">repr<\/span><span class=\"token punctuation\">(<\/span>char<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        start <span class=\"token operator\">&#061;<\/span> p<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">demo_word_boundary<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;2. \u5355\u8bcd\u8fb9\u754c\u62c6\u5206\u4e2d\u82f1\u6587\u6df7\u5408\u6587\u672c&#034;&#034;&#034;<\/span><br \/>\n    text <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;Hello Qt6 \u5d4c\u5165\u5f0f\u5f00\u53d1,Python&#043;PyQt6 \u6587\u672c\u89e3\u6790 test-case&#034;<\/span><br \/>\n    finder <span class=\"token operator\">&#061;<\/span> QTextBoundaryFinder<span class=\"token punctuation\">(<\/span>QTextBoundaryFinder<span class=\"token punctuation\">.<\/span>BoundaryType<span class=\"token punctuation\">.<\/span>Word<span class=\"token punctuation\">,<\/span> text<span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\\\\n&#061;&#061;&#061;&#061;&#061; \u5355\u8bcd\u8fb9\u754c\u62c6\u5206 &#061;&#061;&#061;&#061;&#061;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    start <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><br \/>\n    pos <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><br \/>\n    words <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        pos <span class=\"token operator\">&#061;<\/span> finder<span class=\"token punctuation\">.<\/span>toNextBoundary<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> pos <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">break<\/span><br \/>\n        substr <span class=\"token operator\">&#061;<\/span> text<span class=\"token punctuation\">[<\/span>start<span class=\"token punctuation\">:<\/span>pos<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>strip<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> substr<span class=\"token punctuation\">:<\/span><br \/>\n            words<span class=\"token punctuation\">.<\/span>append<span class=\"token punctuation\">(<\/span>substr<span class=\"token punctuation\">)<\/span><br \/>\n        start <span class=\"token operator\">&#061;<\/span> pos<br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u62c6\u5206\u5355\u8bcd\u5217\u8868&#xff1a;&#034;<\/span><span class=\"token punctuation\">,<\/span> words<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">demo_sentence_boundary<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;3. \u53e5\u5b50\u8fb9\u754c\u6309\u53e5\u53f7\/\u95ee\u53f7\/\u611f\u53f9\u53f7\u5207\u5206&#034;&#034;&#034;<\/span><br \/>\n    text <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u4f60\u597d&#xff0c;Qt\u8fb9\u754c\u67e5\u627e\u5668\u3002\u8fd9\u662f\u7b2c\u4e8c\u53e5\u8bdd&#xff1f;\u518d\u6765\u4e00\u53e5&#xff01;\u6700\u540e\u4e00\u53e5\u7ed3\u675f&#034;<\/span><br \/>\n    finder <span class=\"token operator\">&#061;<\/span> QTextBoundaryFinder<span class=\"token punctuation\">(<\/span>QTextBoundaryFinder<span class=\"token punctuation\">.<\/span>BoundaryType<span class=\"token punctuation\">.<\/span>Sentence<span class=\"token punctuation\">,<\/span> text<span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\\\\n&#061;&#061;&#061;&#061;&#061; \u53e5\u5b50\u62c6\u5206 &#061;&#061;&#061;&#061;&#061;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    start <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><br \/>\n    sentences <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        pos <span class=\"token operator\">&#061;<\/span> finder<span class=\"token punctuation\">.<\/span>toNextBoundary<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> pos <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">break<\/span><br \/>\n        sent <span class=\"token operator\">&#061;<\/span> text<span class=\"token punctuation\">[<\/span>start<span class=\"token punctuation\">:<\/span>pos<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>strip<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> sent<span class=\"token punctuation\">:<\/span><br \/>\n            sentences<span class=\"token punctuation\">.<\/span>append<span class=\"token punctuation\">(<\/span>sent<span class=\"token punctuation\">)<\/span><br \/>\n        start <span class=\"token operator\">&#061;<\/span> pos<br \/>\n    <span class=\"token keyword\">for<\/span> idx<span class=\"token punctuation\">,<\/span> s <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">enumerate<\/span><span class=\"token punctuation\">(<\/span>sentences<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u53e5\u5b50<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>idx<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>s<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">demo_line_break_truncate<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;4. \u9650\u5b9a\u5bbd\u5ea6\u622a\u65ad\u6587\u672c&#xff08;UI\u663e\u793a\u8d85\u957f\u6587\u5b57\u7701\u7565\u53f7&#xff09;&#034;&#034;&#034;<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">truncate_text<\/span><span class=\"token punctuation\">(<\/span>raw_text<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">,<\/span> max_chars<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">int<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>raw_text<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&#061;<\/span> max_chars<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> raw_text<\/p>\n<p>        finder <span class=\"token operator\">&#061;<\/span> QTextBoundaryFinder<span class=\"token punctuation\">(<\/span>QTextBoundaryFinder<span class=\"token punctuation\">.<\/span>BoundaryType<span class=\"token punctuation\">.<\/span>Grapheme<span class=\"token punctuation\">,<\/span> raw_text<span class=\"token punctuation\">)<\/span><br \/>\n        cut_pos <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><br \/>\n        <span class=\"token keyword\">while<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            next_p <span class=\"token operator\">&#061;<\/span> finder<span class=\"token punctuation\">.<\/span>toNextBoundary<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> next_p <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span> <span class=\"token keyword\">or<\/span> next_p <span class=\"token operator\">&gt;<\/span> max_chars<span class=\"token punctuation\">:<\/span><br \/>\n                <span class=\"token keyword\">break<\/span><br \/>\n            cut_pos <span class=\"token operator\">&#061;<\/span> next_p<br \/>\n        <span class=\"token keyword\">return<\/span> raw_text<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">:<\/span>cut_pos<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;&#8230;&#034;<\/span><\/p>\n<p>    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\\\\n&#061;&#061;&#061;&#061;&#061; \u6587\u672c\u622a\u65ad\u793a\u4f8b &#061;&#061;&#061;&#061;&#061;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    long_str <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;Qt QTextBoundaryFinder \u7528\u6765\u5b89\u5168\u622a\u65ad\u591a\u8bed\u8a00\u6df7\u5408\u5b57\u7b26\u4e32&#xff0c;\u4e0d\u4f1a\u628aemoji\u62c6\u6210\u4e71\u7801&#034;<\/span><br \/>\n    res <span class=\"token operator\">&#061;<\/span> truncate_text<span class=\"token punctuation\">(<\/span>long_str<span class=\"token punctuation\">,<\/span> <span class=\"token number\">18<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u539f\u59cb&#xff1a;&#034;<\/span><span class=\"token punctuation\">,<\/span> long_str<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u622a\u65ad&#xff1a;&#034;<\/span><span class=\"token punctuation\">,<\/span> res<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span> __name__ <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#034;__main__&#034;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    demo_grapheme_boundary<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    demo_word_boundary<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    demo_sentence_boundary<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    demo_line_break_truncate<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    sys<span class=\"token punctuation\">.<\/span>exit<span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8fd0\u884c\u7ed3\u679c<\/p>\n<p>D<span class=\"token punctuation\">:<\/span>\\\\user\\\\<span class=\"token number\">01417804<\/span>\\\\\u684c\u9762\\\\PythonProject\\\\<span class=\"token punctuation\">.<\/span>venv\\\\Scripts\\\\python<span class=\"token punctuation\">.<\/span>exe D<span class=\"token punctuation\">:<\/span>\\\\user\\\\<span class=\"token number\">01417804<\/span>\\\\\u684c\u9762\\\\PythonProject\\\\main<span class=\"token punctuation\">.<\/span>py<br \/>\n<span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;<\/span> \u5b57\u5f62\u7c07\u8fb9\u754c\u904d\u5386 <span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;<\/span><br \/>\n<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">:<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token string\">&#039;&#x1f600;a&#039;<\/span><br \/>\n<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">:<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token string\">&#039;\u00e9&#039;<\/span><br \/>\n<span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">:<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token string\">&#039;\u6c49&#039;<\/span><br \/>\n<span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">:<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token string\">&#039;&#039;<\/span><\/p>\n<p><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;<\/span> \u5355\u8bcd\u8fb9\u754c\u62c6\u5206 <span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;<\/span><br \/>\n\u62c6\u5206\u5355\u8bcd\u5217\u8868&#xff1a; <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;Hello&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;Qt6&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;\u5d4c&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;\u5165&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;\u5f0f&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;\u5f00&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;\u53d1&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;,&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;Python&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;&#043;&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;PyQt6&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;\u6587&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;\u672c&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;\u89e3&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;\u6790&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;test&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;-&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;case&#039;<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;<\/span> \u53e5\u5b50\u62c6\u5206 <span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;<\/span><br \/>\n\u53e5\u5b50<span class=\"token number\">1<\/span><span class=\"token punctuation\">:<\/span> \u4f60\u597d&#xff0c;Qt\u8fb9\u754c\u67e5\u627e\u5668\u3002<br \/>\n\u53e5\u5b50<span class=\"token number\">2<\/span><span class=\"token punctuation\">:<\/span> \u8fd9\u662f\u7b2c\u4e8c\u53e5\u8bdd&#xff1f;<br \/>\n\u53e5\u5b50<span class=\"token number\">3<\/span><span class=\"token punctuation\">:<\/span> \u518d\u6765\u4e00\u53e5&#xff01;<br \/>\n\u53e5\u5b50<span class=\"token number\">4<\/span><span class=\"token punctuation\">:<\/span> \u6700\u540e\u4e00\u53e5\u7ed3\u675f<\/p>\n<p><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;<\/span> \u6587\u672c\u622a\u65ad\u793a\u4f8b <span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token operator\">&#061;<\/span><br \/>\n\u539f\u59cb&#xff1a; Qt QTextBoundaryFinder \u7528\u6765\u5b89\u5168\u622a\u65ad\u591a\u8bed\u8a00\u6df7\u5408\u5b57\u7b26\u4e32&#xff0c;\u4e0d\u4f1a\u628aemoji\u62c6\u6210\u4e71\u7801<br \/>\n\u622a\u65ad&#xff1a; Qt QTextBoundaryFi<span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><\/p>\n<p>\u8fdb\u7a0b\u5df2\u7ed3\u675f&#xff0c;\u9000\u51fa\u4ee3\u7801\u4e3a <span class=\"token number\">0<\/span><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260813232546-6a7e527a1983e.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>PyQt QTextBoundaryFinder\u7c7b\u8be6\u89e3&#xff1a;\u7cbe\u51c6\u5b9a\u4f4d\u6587\u672c\u8fb9\u754c\u4e00\u3001QTextBoundaryFinder\u7c7b\u8be6\u89e31\u3001\u5f15\u8a00&#xff1a;\u4ec0\u4e48\u662f\u6587\u672c\u8fb9\u754c\u67e5\u627e&#xff1f;2\u3001 \u6838\u5fc3\u6982\u5ff5\u4e0e\u8fb9\u754c\u7c7b\u578b3\u3001 \u6784\u9020\u51fd\u6570\u4e0e\u57fa\u672c\u8bbe\u7f6e3.1 \u3001\u5bfc\u5165\u4e0e\u521b\u5efa3.2 \u5173\u952e\u5c5e\u6027\u8bbe\u7f6e4\u3001\u6ce8\u610f\u4e8b\u9879\u4e0e\u6700\u4f73\u5b9e\u8df54.1\u3001 \u6027\u80fd\u8003\u86514.2 \u3001\u8fb9\u754c\u5904\u7406\u7ec6\u82824.3\u3001 \u9519\u8bef\u5904\u74064.4\u3001 \u4e0ePython\u6807\u51c6\u5e93\u7684\u5bf9\u6bd45\u3001 \u603b\u7ed3\u4e8c\u3001\u4ee3\u7801\u793a\u4f8b\u4e00\u3001QTextBoundaryFinder\u7c7b\u8be6\u89e3<br \/>\n1\u3001\u5f15\u8a00&amp;<\/p>\n","protected":false},"author":2,"featured_media":94285,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1705],"topic":[],"class_list":["post-94287","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-pyqt"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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