{"id":2925,"date":"2024-12-13T08:54:50","date_gmt":"2024-12-13T00:54:50","guid":{"rendered":"http:\/\/viplao.com\/?p=2925"},"modified":"2024-12-13T08:54:57","modified_gmt":"2024-12-13T00:54:57","slug":"python%e5%9f%ba%e7%a1%80%e6%8a%80%e8%83%bd-12%e4%b8%aafind%e5%87%bd%e6%95%b0%e5%9c%a8python%e4%b8%ad%e7%9a%84%e5%88%9b%e6%84%8f%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"http:\/\/viplao.com\/index.php\/2024\/12\/13\/python%e5%9f%ba%e7%a1%80%e6%8a%80%e8%83%bd-12%e4%b8%aafind%e5%87%bd%e6%95%b0%e5%9c%a8python%e4%b8%ad%e7%9a%84%e5%88%9b%e6%84%8f%e5%ae%9e%e8%b7%b5\/","title":{"rendered":"PYTHON\u57fa\u7840\u6280\u80fd \u2013\u00a012\u4e2afind()\u51fd\u6570\u5728Python\u4e2d\u7684\u521b\u610f\u5b9e\u8df5"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_71 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" 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href=\"http:\/\/viplao.com\/index.php\/2024\/12\/13\/python%e5%9f%ba%e7%a1%80%e6%8a%80%e8%83%bd-12%e4%b8%aafind%e5%87%bd%e6%95%b0%e5%9c%a8python%e4%b8%ad%e7%9a%84%e5%88%9b%e6%84%8f%e5%ae%9e%e8%b7%b5\/#13_%E4%B8%8D%E9%81%97%E6%BC%8F%E7%9A%84%E5%85%A8%E8%8C%83%E5%9B%B4%E6%90%9C%E7%B4%A2\" title=\"13. \u4e0d\u9057\u6f0f\u7684\u5168\u8303\u56f4\u641c\u7d22\">13. \u4e0d\u9057\u6f0f\u7684\u5168\u8303\u56f4\u641c\u7d22<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"http:\/\/viplao.com\/index.php\/2024\/12\/13\/python%e5%9f%ba%e7%a1%80%e6%8a%80%e8%83%bd-12%e4%b8%aafind%e5%87%bd%e6%95%b0%e5%9c%a8python%e4%b8%ad%e7%9a%84%e5%88%9b%e6%84%8f%e5%ae%9e%e8%b7%b5\/#14_%E5%AE%89%E5%85%A8%E7%9A%84%E6%9B%BF%E6%8D%A2%E6%93%8D%E4%BD%9C%E5%89%8D%E5%A5%8F\" title=\"14. \u5b89\u5168\u7684\u66ff\u6362\u64cd\u4f5c\u524d\u594f\">14. \u5b89\u5168\u7684\u66ff\u6362\u64cd\u4f5c\u524d\u594f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"http:\/\/viplao.com\/index.php\/2024\/12\/13\/python%e5%9f%ba%e7%a1%80%e6%8a%80%e8%83%bd-12%e4%b8%aafind%e5%87%bd%e6%95%b0%e5%9c%a8python%e4%b8%ad%e7%9a%84%e5%88%9b%e6%84%8f%e5%ae%9e%e8%b7%b5\/#15_%E5%88%A9%E7%94%A8find%E8%BF%9B%E8%A1%8C%E7%AE%80%E5%8D%95%E7%9A%84%E6%A8%A1%E5%BC%8F%E5%8C%B9%E9%85%8D\" title=\"15. \u5229\u7528find()\u8fdb\u884c\u7b80\u5355\u7684\u6a21\u5f0f\u5339\u914d\">15. \u5229\u7528find()\u8fdb\u884c\u7b80\u5355\u7684\u6a21\u5f0f\u5339\u914d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"http:\/\/viplao.com\/index.php\/2024\/12\/13\/python%e5%9f%ba%e7%a1%80%e6%8a%80%e8%83%bd-12%e4%b8%aafind%e5%87%bd%e6%95%b0%e5%9c%a8python%e4%b8%ad%e7%9a%84%e5%88%9b%e6%84%8f%e5%ae%9e%e8%b7%b5\/#%E6%B3%A8%E6%84%8F%E4%BA%8B%E9%A1%B9\" title=\"\u6ce8\u610f\u4e8b\u9879\">\u6ce8\u610f\u4e8b\u9879<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_%E5%9F%BA%E7%A1%80%E6%8E%A2%E7%A7%98%EF%BC%9A%E6%89%BE%E5%91%80%E6%89%BE%EF%BC%8C%E6%89%BE%E5%88%B0%E7%AC%AC%E4%B8%80%E4%B8%AA%EF%BC%81\"><\/span><strong>1. \u57fa\u7840\u63a2\u79d8\uff1a\u627e\u5440\u627e\uff0c\u627e\u5230\u7b2c\u4e00\u4e2a\uff01<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>text&nbsp;=&nbsp;\"Hello,&nbsp;Python&nbsp;world!\"<br>index&nbsp;=&nbsp;text.find(\"Python\")<br>print(f\"Python&nbsp;\u5f00\u59cb\u4e8e:&nbsp;{index}\")<\/code><\/pre>\n\n\n\n<p>\u7b80\u5355\u5427\uff1f<code>find()<\/code>\u51fd\u6570\u5c31\u50cf\u63a2\u7167\u706f\uff0c\u4e00\u7167\u5c31\u544a\u8bc9\u4f60\uff0c\u201cPython\u201d\u4ece\u7b2c7\u4e2a\u5b57\u7b26\u5f00\u59cb\u5b83\u7684\u65c5\u7a0b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_%E4%B8%8D%E8%A7%81%E4%B8%8D%E6%95%A3%EF%BC%9A%E6%89%BE%E4%B8%8D%E5%88%B0%E4%B9%9F%E5%BE%97%E8%AF%B4%E4%B8%80%E5%A3%B0\"><\/span><strong>2. \u4e0d\u89c1\u4e0d\u6563\uff1a\u627e\u4e0d\u5230\u4e5f\u5f97\u8bf4\u4e00\u58f0<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>absent&nbsp;=&nbsp;text.find(\"Java\")<br>if&nbsp;absent&nbsp;==&nbsp;-1:<br>&nbsp;&nbsp;&nbsp;&nbsp;print(\"Java? \u8fd9\u91cc\u6ca1\u6709\u5b83\u7684\u8eab\u5f71\u54e6\u3002\")<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u201cJava\u201d\u662f\u4f60\u8981\u627e\u7684\u5b9d\u85cf\uff0c\u5bf9\u4e0d\u8d77\uff0cPython\u7684\u4e16\u754c\u91cc\u5b83\u4e0d\u5b58\u5728\uff0c<code>find()<\/code>\u4f1a\u5e26\u7740-1\u56de\u6765\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_%E5%A4%9A%E6%AC%A1%E9%82%82%E9%80%85%EF%BC%9A%E7%AC%AC%E4%B8%80%E6%AC%A1%E4%B8%8D%E5%A4%9F%EF%BC%8C%E5%86%8D%E6%9D%A5%E4%B8%80%E6%AC%A1%EF%BC%81\"><\/span><strong>3. \u591a\u6b21\u9082\u9005\uff1a\u7b2c\u4e00\u6b21\u4e0d\u591f\uff0c\u518d\u6765\u4e00\u6b21\uff01<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>text&nbsp;=&nbsp;\"Mississippi\"<br>first_m&nbsp;=&nbsp;text.find(\"i\")<br>second_m&nbsp;=&nbsp;text.find(\"i\",&nbsp;first_m&nbsp;+&nbsp;1)<br>print(f\"\u7b2c\u4e00\u4e2a'i'\u540e\u518d\u6b21\u9047\u5230'i'\u662f\u5728:&nbsp;{second_m}\")<\/code><\/pre>\n\n\n\n<p>\u60f3\u8981\u8fde\u7eed\u627e\uff1f\u7b2c\u4e8c\u4e2a\u53c2\u6570\u5c31\u662f\u8d77\u59cb\u67e5\u627e\u4f4d\u7f6e\uff0c\u8fd9\u4e0d\uff0c\u201ci\u201d\u4eec\u53c8\u89c1\u9762\u4e86\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_%E8%8C%83%E5%9B%B4%E6%B8%B8%E6%88%8F%EF%BC%9A%E9%99%90%E5%AE%9A%E5%8C%BA%E5%9F%9F%EF%BC%8C%E7%B2%BE%E5%87%86%E6%89%93%E5%87%BB\"><\/span><strong>4. \u8303\u56f4\u6e38\u620f\uff1a\u9650\u5b9a\u533a\u57df\uff0c\u7cbe\u51c6\u6253\u51fb<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>slice_text&nbsp;=&nbsp;text&#91;0:7]<br>position&nbsp;=&nbsp;slice_text.find(\"ss\")<br>print(f\"\u5728'Mississippi'\u7684\u524d7\u4e2a\u5b57\u7b26\u4e2d\uff0c'ss'\u5728:&nbsp;{position}\")<\/code><\/pre>\n\n\n\n<p>\u53ea\u5728\u524d7\u4e2a\u5b57\u7b26\u73a9\u6349\u8ff7\u85cf\uff0c<code>find()<\/code>\u4e5f\u80fd\u7cbe\u51c6\u5b9a\u4f4d\u201css\u201d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_%E7%A9%BA%E7%99%BD%E4%B8%8D%E6%98%AF%E9%9A%9C%E7%A2%8D%EF%BC%9A%E5%BF%BD%E7%95%A5%E5%89%8D%E5%90%8E%E7%A9%BA%E7%99%BD\"><\/span><strong>5. \u7a7a\u767d\u4e0d\u662f\u969c\u788d\uff1a\u5ffd\u7565\u524d\u540e\u7a7a\u767d<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>white_space&nbsp;=&nbsp;\"&nbsp;&nbsp;&nbsp;Python&nbsp;&nbsp;&nbsp;\"<br>clean_start&nbsp;=&nbsp;white_space.strip().find(\"Python\")<br>print(f\"\u53bb\u9664\u7a7a\u767d\u540e\uff0cPython\u5f00\u59cb\u4e8e:&nbsp;{clean_start}\")<\/code><\/pre>\n\n\n\n<p>\u524d\u540e\u7a7a\u683c\uff1f\u4e0d\u5b58\u5728\u7684\uff0c\u5148strip\u4e00\u4e0b\uff0c\u518d\u627e\u627e\u770b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_%E5%AD%97%E7%AC%A6%E4%B8%B2%E4%B8%AD%E7%9A%84%E6%95%B0%E5%AD%97%E4%BE%A6%E6%8E%A2\"><\/span><strong>6. \u5b57\u7b26\u4e32\u4e2d\u7684\u6570\u5b57\u4fa6\u63a2<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>mixed&nbsp;=&nbsp;\"Age:&nbsp;28,&nbsp;Height:&nbsp;175cm\"<br>age_start&nbsp;=&nbsp;mixed.find(\"28\")<br>print(f\"\u5e74\u9f84\u5f00\u59cb\u7684\u4f4d\u7f6e:&nbsp;{age_start}\")<\/code><\/pre>\n\n\n\n<p>\u6570\u5b57\u4e5f\u80fd\u88ab\u627e\u5230\uff0c<code>find()<\/code>\u5728\u5b57\u7b26\u4e32\u4e2d\u65e0\u5904\u4e0d\u5728\u7684\u4fa6\u63a2\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_%E5%88%87%E7%89%87%E5%B0%8F%E6%8A%80%E5%B7%A7%EF%BC%9A%E5%8A%A8%E6%80%81%E6%9F%A5%E6%89%BE\"><\/span><strong>7. \u5207\u7247\u5c0f\u6280\u5de7\uff1a\u52a8\u6001\u67e5\u627e<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>dynamic_search&nbsp;=&nbsp;\"abcdefg\"<br>char_to_find&nbsp;=&nbsp;\"d\"<br>start&nbsp;=&nbsp;0<br>while&nbsp;True:<br>&nbsp;&nbsp;&nbsp;&nbsp;found&nbsp;=&nbsp;dynamic_search&#91;start:].find(char_to_find)<br>&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;found&nbsp;==&nbsp;-1:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break<br>&nbsp;&nbsp;&nbsp;&nbsp;print(f\"{char_to_find}\u5728\u4f4d\u7f6e:&nbsp;{found&nbsp;+&nbsp;start}\")<br>&nbsp;&nbsp;&nbsp;&nbsp;start&nbsp;+=&nbsp;found&nbsp;+&nbsp;1<\/code><\/pre>\n\n\n\n<p>\u5faa\u73af\u67e5\u627e\uff0c\u76f4\u5230\u627e\u4e0d\u5230\u4e3a\u6b62\uff0c\u52a8\u6001\u67e5\u627e\uff0c\u6c38\u4e0d\u8a00\u5f03\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"8_%E5%88%86%E9%9A%94%E7%AC%A6%E7%9A%84%E7%9B%9B%E5%AE%B4%EF%BC%9A%E6%89%BE%E5%88%86%E9%9A%94%E7%AC%A6%E7%9A%84%E9%97%B4%E9%9A%94\"><\/span><strong>8. \u5206\u9694\u7b26\u7684\u76db\u5bb4\uff1a\u627e\u5206\u9694\u7b26\u7684\u95f4\u9694<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>csv_data&nbsp;=&nbsp;\"apple,banana,grape\"<br>comma_positions&nbsp;=&nbsp;&#91;csv_data.find(\",\",&nbsp;pos)&nbsp;for&nbsp;pos&nbsp;in&nbsp;range(len(csv_data))&nbsp;if&nbsp;csv_data&#91;pos]&nbsp;==&nbsp;\",\"]<br>print(f\"\u9017\u53f7\u51fa\u73b0\u7684\u4f4d\u7f6e:&nbsp;{comma_positions}\")<\/code><\/pre>\n\n\n\n<p>\u9017\u53f7\u5728\u54ea\u91cc\uff1f\u5217\u8868\u63a8\u5bfc\u5f0f\u548c<code>find()<\/code>\u8054\u624b\uff0c\u4e00\u7f51\u6253\u5c3d\uff01<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"9_%E6%9B%BF%E6%8D%A2%E5%89%8D%E7%9A%84%E4%BE%A6%E6%9F%A5%EF%BC%9A%E7%BB%9F%E8%AE%A1%E5%87%BA%E7%8E%B0%E6%AC%A1%E6%95%B0\"><\/span><strong>9. \u66ff\u6362\u524d\u7684\u4fa6\u67e5\uff1a\u7edf\u8ba1\u51fa\u73b0\u6b21\u6570<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>word&nbsp;=&nbsp;\"hello&nbsp;hello&nbsp;world\"<br>count_hello&nbsp;=&nbsp;word.count(\"hello\")&nbsp;&nbsp;<em>#&nbsp;\u501f\u52a9count\u6765\u8f85\u52a9\uff0cfind\u867d\u7136\u4e0d\u80fd\u76f4\u63a5\u8ba1\u6570\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u95f4\u63a5\u5229\u7528<\/em><br>print(f\"'hello'\u51fa\u73b0\u4e86{count_hello}\u6b21\u3002\")<\/code><\/pre>\n\n\n\n<p>\u867d\u7136\u672c\u804c\u4e0d\u662f\u8ba1\u6570\uff0c\u4f46\u901a\u8fc7\u591a\u6b21\u67e5\u627e\uff0c\u4e5f\u80fd\u95f4\u63a5\u77e5\u9053\u6b21\u6570\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"10_%E9%93%BE%E6%8E%A5%E7%9A%84%E6%99%BA%E6%85%A7%EF%BC%9A%E5%A4%9A%E4%B8%AA%E6%9D%A1%E4%BB%B6%E4%B8%B2%E8%81%94%E6%9F%A5%E6%89%BE\"><\/span><strong>10. \u94fe\u63a5\u7684\u667a\u6167\uff1a\u591a\u4e2a\u6761\u4ef6\u4e32\u8054\u67e5\u627e<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>url&nbsp;=&nbsp;\"https:\/\/www.example.com\/path\/to\/resource\"<br>protocol_end&nbsp;=&nbsp;url.find(\"\/\/\")&nbsp;+&nbsp;2<br>path_start&nbsp;=&nbsp;url.find(\"\/\",&nbsp;protocol_end)<br>print(f\"\u8def\u5f84\u5f00\u59cb\u4e8e:&nbsp;{path_start}\")<\/code><\/pre>\n\n\n\n<p>\u5c42\u5c42\u9012\u8fdb\uff0c\u4ece\u534f\u8bae\u5230\u8def\u5f84\uff0c<code>find()<\/code>\u8ba9\u4f60\u8f7b\u677e\u89e3\u6790URL\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"11_%E7%89%B9%E6%AE%8A%E5%AD%97%E7%AC%A6%E4%B9%9F%E7%88%B1%E6%89%BE%EF%BC%9A%E8%BD%AC%E4%B9%89%E5%AD%97%E7%AC%A6%E7%9A%84%E4%BD%BF%E7%94%A8\"><\/span><strong>11. \u7279\u6b8a\u5b57\u7b26\u4e5f\u7231\u627e\uff1a\u8f6c\u4e49\u5b57\u7b26\u7684\u4f7f\u7528<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>escape_example&nbsp;=&nbsp;\"Let's&nbsp;use&nbsp;\\\\n&nbsp;for&nbsp;newline.\"<br>new_line_pos&nbsp;=&nbsp;escape_example.find(\"\\\\n\")<br>print(f\"\u627e\u5230\u6362\u884c\u7b26\u7684\u8868\u793a\u4f4d\u7f6e:&nbsp;{new_line_pos}\")<\/code><\/pre>\n\n\n\n<p>\u522b\u5fd8\u4e86\uff0c\u7279\u6b8a\u5b57\u7b26\u524d\u9762\u8981\u52a0\u53cd\u659c\u6760\uff0c\u8ba9Python\u77e5\u9053\u4f60\u7684\u610f\u56fe\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"12_%E7%9C%81%E7%95%A5%E5%8F%B7%E7%9A%84%E7%A7%98%E5%AF%86%EF%BC%9A%E6%89%BE%E2%80%A6%E7%9A%84%E8%B8%AA%E8%BF%B9\"><\/span><strong>12. \u7701\u7565\u53f7\u7684\u79d8\u5bc6\uff1a\u627e\u2026\u7684\u8e2a\u8ff9<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>ellipsis_text&nbsp;=&nbsp;\"This&nbsp;is...&nbsp;a&nbsp;mystery.\"<br>ellipsis_loc&nbsp;=&nbsp;ellipsis_text.find(\"...\")<br>print(f\"\u7701\u7565\u53f7\u7684\u4f4d\u7f6e:&nbsp;{ellipsis_loc}\")<\/code><\/pre>\n\n\n\n<p>\u7701\u7565\u53f7\u4e5f\u80fd\u88ab\u8f7b\u6613\u53d1\u73b0\uff0c\u6545\u4e8b\u672a\u5b8c\uff0c\u5f85\u7eed&#8230;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%AE%9E%E7%94%A8%E6%8A%80%E5%B7%A7%E5%92%8C%E6%B3%A8%E6%84%8F%E4%BA%8B%E9%A1%B9\"><\/span><strong>\u5b9e\u7528\u6280\u5de7\u548c\u6ce8\u610f\u4e8b\u9879<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"13_%E4%B8%8D%E9%81%97%E6%BC%8F%E7%9A%84%E5%85%A8%E8%8C%83%E5%9B%B4%E6%90%9C%E7%B4%A2\"><\/span><strong>13. \u4e0d\u9057\u6f0f\u7684\u5168\u8303\u56f4\u641c\u7d22<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u6709\u65f6\u4f60\u53ef\u80fd\u9700\u8981\u904d\u5386\u6574\u4e2a\u5b57\u7b26\u4e32\u591a\u6b21\uff0c\u4f46\u6bcf\u6b21\u4ece\u4e0d\u540c\u7684\u4f4d\u7f6e\u5f00\u59cb\u3002\u4e00\u4e2a\u4f18\u96c5\u7684\u65b9\u6cd5\u662f\u7ed3\u5408\u5faa\u73af\u548c\u9012\u589e\u8d77\u59cb\u4f4d\u7f6e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>text_search&nbsp;=&nbsp;\"repeated&nbsp;word&nbsp;repeated\"<br>search_word&nbsp;=&nbsp;\"repeated\"<br>positions&nbsp;=&nbsp;&#91;]<br>start&nbsp;=&nbsp;0<br>while&nbsp;True:<br>&nbsp;&nbsp;&nbsp;&nbsp;pos&nbsp;=&nbsp;text_search.find(search_word,&nbsp;start)<br>&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;pos&nbsp;==&nbsp;-1:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break<br>&nbsp;&nbsp;&nbsp;&nbsp;positions.append(pos)<br>&nbsp;&nbsp;&nbsp;&nbsp;start&nbsp;=&nbsp;pos&nbsp;+&nbsp;len(search_word)&nbsp;&nbsp;<em>#&nbsp;\u786e\u4fdd\u4e0b\u4e00\u6b21\u641c\u7d22\u4ece\u5f53\u524d\u5339\u914d\u7684\u672b\u5c3e\u4e4b\u540e\u5f00\u59cb<\/em><br>print(f\"'{search_word}'\u51fa\u73b0\u5728:&nbsp;{positions}\")<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"14_%E5%AE%89%E5%85%A8%E7%9A%84%E6%9B%BF%E6%8D%A2%E6%93%8D%E4%BD%9C%E5%89%8D%E5%A5%8F\"><\/span><strong>14. \u5b89\u5168\u7684\u66ff\u6362\u64cd\u4f5c\u524d\u594f<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5728\u8fdb\u884c\u5b57\u7b26\u4e32\u66ff\u6362\u4e4b\u524d\uff0c\u68c0\u67e5\u76ee\u6807\u5b50\u4e32\u662f\u5426\u5b58\u5728\u53ef\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u9519\u8bef\u3002\u6bd4\u5982\uff0c\u4f7f\u7528<code>find()<\/code>\u6765\u51b3\u5b9a\u662f\u5426\u6267\u884c<code>replace()<\/code>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>original&nbsp;=&nbsp;\"The&nbsp;quick&nbsp;brown&nbsp;fox&nbsp;jumps&nbsp;over&nbsp;the&nbsp;lazy&nbsp;dog.\"<br>to_replace&nbsp;=&nbsp;\"fox\"<br>replacement&nbsp;=&nbsp;\"cat\"<br>if&nbsp;original.find(to_replace)&nbsp;!=&nbsp;-1:<br>&nbsp;&nbsp;&nbsp;&nbsp;modified&nbsp;=&nbsp;original.replace(to_replace,&nbsp;replacement)<br>&nbsp;&nbsp;&nbsp;&nbsp;print(f\"\u4fee\u6539\u540e:&nbsp;{modified}\")<br>else:<br>&nbsp;&nbsp;&nbsp;&nbsp;print(f\"'{to_replace}'\u4e0d\u5728\u6587\u672c\u4e2d\uff0c\u65e0\u9700\u66ff\u6362\u3002\")<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"15_%E5%88%A9%E7%94%A8find%E8%BF%9B%E8%A1%8C%E7%AE%80%E5%8D%95%E7%9A%84%E6%A8%A1%E5%BC%8F%E5%8C%B9%E9%85%8D\"><\/span><strong>15. \u5229\u7528<code>find()<\/code>\u8fdb\u884c\u7b80\u5355\u7684\u6a21\u5f0f\u5339\u914d<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u867d\u7136\u6b63\u5219\u8868\u8fbe\u5f0f(<code>re<\/code>\u6a21\u5757)\u66f4\u9002\u5408\u590d\u6742\u7684\u6a21\u5f0f\u5339\u914d\uff0c\u4f46\u5728\u7b80\u5355\u7684\u573a\u666f\u4e0b\uff0c\u7ed3\u5408<code>find()<\/code>\u53ef\u4ee5\u5feb\u901f\u5b9e\u73b0\u57fa\u672c\u7684\u6a21\u5f0f\u8bc6\u522b\uff0c\u6bd4\u5982\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u4ee5\u7279\u5b9a\u5b57\u7b26\u6216\u77ed\u8bed\u5f00\u59cb\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>email&nbsp;=&nbsp;\"example@example.com\"<br>if&nbsp;email.find(\"@\")&nbsp;&gt;&nbsp;0&nbsp;and&nbsp;email.endswith(\".com\"):&nbsp;&nbsp;<em>#&nbsp;\u7b80\u5355\u7684\u90ae\u7bb1\u9a8c\u8bc1<\/em><br>&nbsp;&nbsp;&nbsp;&nbsp;print(\"\u770b\u8d77\u6765\u662f\u4e2a\u6709\u6548\u7684\u90ae\u7bb1\u5730\u5740\u3002\")<br>else:<br>&nbsp;&nbsp;&nbsp;&nbsp;print(\"\u90ae\u7bb1\u683c\u5f0f\u4f3c\u4e4e\u4e0d\u5bf9\u54e6\u3002\")<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%B3%A8%E6%84%8F%E4%BA%8B%E9%A1%B9\"><\/span><strong>\u6ce8\u610f\u4e8b\u9879<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul>\n<li><strong>\u6027\u80fd\u8003\u91cf<\/strong>\uff1a\u5c3d\u7ba1<code>find()<\/code>\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u6548\u7387\u4e0d\u9519\uff0c\u4f46\u5728\u5904\u7406\u6781\u5927\u5b57\u7b26\u4e32\u6216\u9891\u7e41\u8c03\u7528\u65f6\uff0c\u8003\u8651\u6027\u80fd\u5f71\u54cd\u662f\u6709\u5fc5\u8981\u7684\u3002<\/li>\n\n\n\n<li><strong>\u533a\u5206\u5927\u5c0f\u5199<\/strong>\uff1a\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c<code>find()<\/code>\u662f\u533a\u5206\u5927\u5c0f\u5199\u7684\uff0c\u5982\u679c\u4f60\u9700\u8981\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u7684\u67e5\u627e\uff0c\u53ef\u4ee5\u5148\u7528<code>lower()<\/code>\u6216<code>upper()<\/code>\u8f6c\u6362\u5b57\u7b26\u4e32\u3002<\/li>\n\n\n\n<li><strong>\u7a7a\u5b57\u7b26\u4e32<\/strong>\uff1a\u67e5\u627e\u7a7a\u5b57\u7b26\u4e32\u4f1a\u8fd4\u56de0\uff0c\u8fd9\u610f\u5473\u7740\u67e5\u627e\u662f\u4ece\u5b57\u7b26\u4e32\u7684\u5f00\u59cb\u4f4d\u7f6e\u5f00\u59cb\u7684\uff0c\u8fd9\u4e00\u70b9\u5728\u67d0\u4e9b\u903b\u8f91\u5224\u65ad\u65f6\u9700\u8981\u6ce8\u610f\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>1. \u57fa\u7840\u63a2\u79d8\uff1a\u627e\u5440\u627e\uff0c\u627e\u5230\u7b2c\u4e00\u4e2a\uff01 \u7b80\u5355\u5427\uff1ffind()\u51fd\u6570\u5c31\u50cf\u63a2\u7167\u706f\uff0c\u4e00\u7167\u5c31\u544a\u8bc9\u4f60\uff0c\u201cPytho&hellip; <a href=\"http:\/\/viplao.com\/index.php\/2024\/12\/13\/python%e5%9f%ba%e7%a1%80%e6%8a%80%e8%83%bd-12%e4%b8%aafind%e5%87%bd%e6%95%b0%e5%9c%a8python%e4%b8%ad%e7%9a%84%e5%88%9b%e6%84%8f%e5%ae%9e%e8%b7%b5\/\" class=\"more-link read-more\" rel=\"bookmark\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">PYTHON\u57fa\u7840\u6280\u80fd \u2013\u00a012\u4e2afind()\u51fd\u6570\u5728Python\u4e2d\u7684\u521b\u610f\u5b9e\u8df5<\/span><i class=\"fa fa-arrow-right\"><\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[28],"views":551,"_links":{"self":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/2925"}],"collection":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/comments?post=2925"}],"version-history":[{"count":1,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/2925\/revisions"}],"predecessor-version":[{"id":2926,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/2925\/revisions\/2926"}],"wp:attachment":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/media?parent=2925"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/categories?post=2925"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/tags?post=2925"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}