{"id":204702,"date":"2025-05-29T15:52:48","date_gmt":"2025-05-29T07:52:48","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204702\/"},"modified":"2025-05-29T15:52:48","modified_gmt":"2025-05-29T07:52:48","slug":"python-%e4%b8%ad-replace-%e5%92%8c-sub-%e5%a4%84%e7%90%86%e8%bf%9e%e7%bb%ad%e6%8d%a2%e8%a1%8c%e7%ac%a6%e7%9a%84%e5%b7%ae%e5%bc%82%ef%bc%9a%e4%b8%ba%e4%bb%80%e4%b9%88-replace-%e6%97%a0%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204702\/","title":{"rendered":"Python \u4e2d replace() \u548c sub() \u5904\u7406\u8fde\u7eed\u6362\u884c\u7b26\u7684\u5dee\u5f02\uff1a\u4e3a\u4ec0\u4e48 replace() \u65e0\u6cd5\u6b63\u786e\u66ff\u6362\u8fde\u7eed\u6362\u884c\u7b26\uff0c\u800c sub() \u53ef\u4ee5\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Python \u4e2d replace() \u548c sub() \u5904\u7406\u8fde\u7eed\u6362\u884c\u7b26\u7684\u5dee\u5f02\uff1a\u4e3a\u4ec0\u4e48 replace() \u65e0\u6cd5\u6b63\u786e\u66ff\u6362\u8fde\u7eed\u6362\u884c\u7b26\uff0c\u800c sub() \u53ef\u4ee5\uff1f<\/h1>\n<p>\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591a<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241114\/1731555392673570404513e.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>replace() \u548c sub() \u5904\u7406\u8fde\u7eed\u6362\u884c\u7b26\u7684\u5dee\u5f02<\/strong><\/p>\n<p>\u5728 python \u4e2d\uff0c\u8981\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u8fde\u7eed\u6362\u884c\u7b26\u66ff\u6362\u4e3a\u5355\u4e2a\u6362\u884c\u7b26\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e24\u4e2a\u51fd\u6570\uff1areplace() \u548c sub()\u3002\u7136\u800c\uff0c\u5bf9\u4e8e\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\uff0c\u8fd9\u4e24\u4e2a\u51fd\u6570\u7684\u884c\u4e3a\u4e0d\u540c\u3002<\/p>\n<p><strong>replace()<\/strong><\/p>\n<p>replace() \u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u53ea\u63a5\u53d7\u5b57\u7b26\u4e32\uff0c\u800c\u4e0d\u80fd\u76f4\u63a5\u8f93\u5165\u6b63\u5219\u8868\u8fbe\u5f0f\u3002\u56e0\u6b64\uff0c\u5f53\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f n+ \u65f6\uff0creplace() \u4f1a\u5c06\u5176\u89c6\u4e3a\u666e\u901a\u5b57\u7b26\u4e32\uff0c\u800c\u4e0d\u662f\u6b63\u5219\u8868\u8fbe\u5f0f\u3002\u8fd9\u5bfc\u81f4\u8fde\u7eed\u6362\u884c\u7b26\u4e0d\u4f1a\u88ab\u66ff\u6362\u3002<\/p>\n<p>\u4f8b\u5982\u4e0b\u9762\u7684\u4ee3\u7801\uff0c\u5c06\u5c1d\u8bd5\u7528\u5355\u4e2a\u6362\u884c\u7b26\u66ff\u6362 &#8216;nn&#8217; \u4e2d\u7684\u8fde\u7eed\u6362\u884c\u7b26\uff0c\u4f46\u5b9e\u9645\u4e0a\u5e76\u4e0d\u4f1a\u66ff\u6362\uff1a<\/p>\n<pre>'\\n\\n'.replace(r'\\n+','')\n# '\\n\\n'<\/pre>\n<p><strong>sub()<\/strong><\/p>\n<p>\u53e6\u4e00\u65b9\u9762\uff0csub() \u51fd\u6570\u4e13\u95e8\u7528\u4e8e\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u8fdb\u884c\u5b57\u7b26\u4e32\u66ff\u6362\u3002\u5b83\u53ef\u4ee5\u6b63\u786e\u5904\u7406\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\uff0c\u5e76\u6709\u6548\u5730\u5c06\u8fde\u7eed\u6362\u884c\u7b26\u66ff\u6362\u4e3a\u5355\u4e2a\u6362\u884c\u7b26\u3002<\/p>\n<p>\u4f8b\u5982\u4e0b\u9762\u7684\u4ee3\u7801\u4f7f\u7528 sub() \u51fd\u6570\u6b63\u786e\u5730\u66ff\u6362\u4e86\u6362\u884c\u7b26\uff1a<\/p>\n<pre>import re\nre.sub('\\n+','','\\n\\n')\n# ''<\/pre>\n<p>\u8fd9\u662f\u56e0\u4e3a sub() \u4f1a\u5c06\u6a21\u5f0f n+ \u89c6\u4e3a\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u5e76\u5339\u914d\u4e00\u4e2a\u6216\u591a\u4e2a\u6362\u884c\u7b26\u3002\u56e0\u6b64\uff0c\u8fde\u7eed\u7684\u6362\u884c\u7b26\u4f1a\u88ab\u66ff\u6362\u4e3a\u5339\u914d\u7684\u7b2c\u4e00\u4e2a\u6362\u884c\u7b26\uff0c\u4ece\u800c\u7559\u4e0b\u4e00\u4e2a\u5355\u4e2a\u6362\u884c\u7b26\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Python \u4e2d replace&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-204702","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204702","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=204702"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204702\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204702"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204702"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204702"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}