{"id":1181078,"date":"2025-01-15T18:46:37","date_gmt":"2025-01-15T10:46:37","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1181078.html"},"modified":"2025-01-15T18:46:41","modified_gmt":"2025-01-15T10:46:41","slug":"python%e4%b8%ad%e5%a6%82%e4%bd%95%e5%8e%bb%e6%8e%89%e5%85%b6%e4%bb%96%e5%ad%97%e7%ac%a6-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1181078.html","title":{"rendered":"python\u4e2d\u5982\u4f55\u53bb\u6389\u5176\u4ed6\u5b57\u7b26"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25125543\/c679794e-e403-44d6-b82a-821da3164524.webp\" alt=\"python\u4e2d\u5982\u4f55\u53bb\u6389\u5176\u4ed6\u5b57\u7b26\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\u53bb\u6389\u5176\u4ed6\u5b57\u7b26\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5e38\u89c1\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u5b57\u7b26\u4e32\u7684\u5185\u7f6e\u65b9\u6cd5\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u3001\u5217\u8868\u89e3\u6790\u7b49\u3002<\/strong> \u6700\u5e38\u7528\u7684\u65b9\u6cd5\u5305\u62ec <strong>str.replace()\u3001str.translate()\u3001\u6b63\u5219\u8868\u8fbe\u5f0fre.sub()\u3002<\/strong> \u5176\u4e2d\uff0c<strong>str.replace()<\/strong> \u662f\u6700\u7b80\u5355\u548c\u76f4\u63a5\u7684\u65b9\u6cd5\uff0c\u4f46\u5b83\u53ea\u80fd\u4e00\u6b21\u66ff\u6362\u4e00\u79cd\u5b57\u7b26\uff1b<strong>str.translate()<\/strong> \u65b9\u6cd5\u529f\u80fd\u5f3a\u5927\uff0c\u53ef\u4ee5\u4e00\u6b21\u6027\u66ff\u6362\u591a\u4e2a\u5b57\u7b26\uff1b<strong>\u6b63\u5219\u8868\u8fbe\u5f0fre.sub()<\/strong> \u5219\u9002\u7528\u4e8e\u590d\u6742\u7684\u66ff\u6362\u9700\u6c42\u3002<\/p>\n<\/p>\n<p><p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u8be6\u7ec6\u8bb2\u89e3\u5982\u4f55\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u6765\u53bb\u6389\u5b57\u7b26\u4e32\u4e2d\u7684\u5176\u4ed6\u5b57\u7b26\u3002<\/p>\n<\/p>\n<p><h2>\u4e00\u3001\u4f7f\u7528str.replace()\u65b9\u6cd5<\/h2>\n<\/p>\n<p><p><code>str.replace()<\/code> \u65b9\u6cd5\u662f\u6700\u7b80\u5355\u548c\u76f4\u63a5\u7684\u5b57\u7b26\u4e32\u66ff\u6362\u65b9\u6cd5\u3002\u5b83\u7528\u65b0\u5b57\u7b26\u4e32\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u6307\u5b9a\u7684\u65e7\u5b57\u7b26\u4e32\u3002\u867d\u7136\u5b83\u53ea\u80fd\u4e00\u6b21\u66ff\u6362\u4e00\u79cd\u5b57\u7b26\uff0c\u4f46\u5bf9\u4e8e\u4e00\u4e9b\u7b80\u5355\u7684\u66ff\u6362\u9700\u6c42\u8db3\u591f\u4e86\u3002<\/p>\n<\/p>\n<p><h3>\u793a\u4f8b\u4ee3\u7801\uff1a<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\"># \u793a\u4f8b\u5b57\u7b26\u4e32<\/p>\n<p>original_string = &quot;Hello, World! 123&quot;<\/p>\n<h2><strong>\u53bb\u6389\u6240\u6709\u9017\u53f7<\/strong><\/h2>\n<p>new_string = original_string.replace(&quot;,&quot;, &quot;&quot;)<\/p>\n<p>print(new_string)  # \u8f93\u51fa: Hello World! 123<\/p>\n<h2><strong>\u53bb\u6389\u6240\u6709\u7a7a\u683c<\/strong><\/h2>\n<p>new_string = new_string.replace(&quot; &quot;, &quot;&quot;)<\/p>\n<p>print(new_string)  # \u8f93\u51fa: HelloWorld!123<\/p>\n<h2><strong>\u53bb\u6389\u6240\u6709\u611f\u53f9\u53f7<\/strong><\/h2>\n<p>new_string = new_string.replace(&quot;!&quot;, &quot;&quot;)<\/p>\n<p>print(new_string)  # \u8f93\u51fa: HelloWorld123<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>\u4e8c\u3001\u4f7f\u7528str.translate()\u548cstr.maketrans()\u65b9\u6cd5<\/h2>\n<\/p>\n<p><p><code>str.translate()<\/code> \u65b9\u6cd5\u7ed3\u5408 <code>str.maketrans()<\/code> \u65b9\u6cd5\uff0c\u53ef\u4ee5\u4e00\u6b21\u6027\u53bb\u6389\u591a\u4e2a\u5b57\u7b26\u3002<code>str.maketrans()<\/code> \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u5b57\u7b26\u6620\u5c04\u8868\uff0c\u8fd9\u4e2a\u8868\u53ef\u4ee5\u7528\u4e8e <code>str.translate()<\/code> \u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><h3>\u793a\u4f8b\u4ee3\u7801\uff1a<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\"># \u793a\u4f8b\u5b57\u7b26\u4e32<\/p>\n<p>original_string = &quot;Hello, World! 123&quot;<\/p>\n<h2><strong>\u521b\u5efa\u6620\u5c04\u8868\uff0c\u6307\u5b9a\u8981\u53bb\u6389\u7684\u5b57\u7b26<\/strong><\/h2>\n<p>remove_chars = &quot;,! &quot;<\/p>\n<p>translation_table = str.maketrans(&#39;&#39;, &#39;&#39;, remove_chars)<\/p>\n<h2><strong>\u4f7f\u7528translate\u65b9\u6cd5\u53bb\u6389\u6307\u5b9a\u5b57\u7b26<\/strong><\/h2>\n<p>new_string = original_string.translate(translation_table)<\/p>\n<p>print(new_string)  # \u8f93\u51fa: HelloWorld123<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>\u4e09\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0fre.sub()\u65b9\u6cd5<\/h2>\n<\/p>\n<p><p><code>re.sub()<\/code> \u65b9\u6cd5\u53ef\u4ee5\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u6765\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u5339\u914d\u7684\u90e8\u5206\u3002\u5b83\u9002\u7528\u4e8e\u590d\u6742\u7684\u66ff\u6362\u9700\u6c42\uff0c\u6bd4\u5982\u53bb\u6389\u6240\u6709\u975e\u5b57\u6bcd\u6570\u5b57\u7684\u5b57\u7b26\u3002<\/p>\n<\/p>\n<p><h3>\u793a\u4f8b\u4ee3\u7801\uff1a<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<h2><strong>\u793a\u4f8b\u5b57\u7b26\u4e32<\/strong><\/h2>\n<p>original_string = &quot;Hello, World! 123&quot;<\/p>\n<h2><strong>\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u53bb\u6389\u6240\u6709\u975e\u5b57\u6bcd\u6570\u5b57\u7684\u5b57\u7b26<\/strong><\/h2>\n<p>new_string = re.sub(r&#39;[^A-Za-z0-9]&#39;, &#39;&#39;, original_string)<\/p>\n<p>print(new_string)  # \u8f93\u51fa: HelloWorld123<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>\u56db\u3001\u4f7f\u7528\u5217\u8868\u89e3\u6790\u548cjoin\u65b9\u6cd5<\/h2>\n<\/p>\n<p><p>\u5217\u8868\u89e3\u6790\u7ed3\u5408 <code>str.join()<\/code> \u65b9\u6cd5\uff0c\u53ef\u4ee5\u7075\u6d3b\u5730\u53bb\u6389\u4e0d\u9700\u8981\u7684\u5b57\u7b26\u3002\u901a\u8fc7\u904d\u5386\u5b57\u7b26\u4e32\u4e2d\u7684\u6bcf\u4e2a\u5b57\u7b26\uff0c\u5224\u65ad\u662f\u5426\u9700\u8981\u4fdd\u7559\uff0c\u518d\u4f7f\u7528 <code>str.join()<\/code> \u65b9\u6cd5\u5c06\u4fdd\u7559\u4e0b\u6765\u7684\u5b57\u7b26\u62fc\u63a5\u6210\u65b0\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n<p><h3>\u793a\u4f8b\u4ee3\u7801\uff1a<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\"># \u793a\u4f8b\u5b57\u7b26\u4e32<\/p>\n<p>original_string = &quot;Hello, World! 123&quot;<\/p>\n<h2><strong>\u5217\u8868\u89e3\u6790\u53bb\u6389\u6307\u5b9a\u5b57\u7b26<\/strong><\/h2>\n<p>new_string = &#39;&#39;.join([char for char in original_string if char.isalnum()])<\/p>\n<p>print(new_string)  # \u8f93\u51fa: HelloWorld123<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>\u4e94\u3001\u4f7f\u7528filter\u65b9\u6cd5<\/h2>\n<\/p>\n<p><p><code>filter()<\/code> \u51fd\u6570\u7ed3\u5408 <code>str.isalnum()<\/code> \u65b9\u6cd5\uff0c\u53ef\u4ee5\u53bb\u6389\u6240\u6709\u975e\u5b57\u6bcd\u6570\u5b57\u7684\u5b57\u7b26\u3002<code>filter()<\/code> \u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u8fed\u4ee3\u5668\uff0c\u9700\u8981\u7528 <code>str.join()<\/code> \u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n<p><h3>\u793a\u4f8b\u4ee3\u7801\uff1a<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\"># \u793a\u4f8b\u5b57\u7b26\u4e32<\/p>\n<p>original_string = &quot;Hello, World! 123&quot;<\/p>\n<h2><strong>\u4f7f\u7528filter\u65b9\u6cd5\u53bb\u6389\u6307\u5b9a\u5b57\u7b26<\/strong><\/h2>\n<p>new_string = &#39;&#39;.join(filter(str.isalnum, original_string))<\/p>\n<p>print(new_string)  # \u8f93\u51fa: HelloWorld123<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>\u516d\u3001\u603b\u7ed3<\/h2>\n<\/p>\n<p><p>\u5728Python\u4e2d\u53bb\u6389\u5176\u4ed6\u5b57\u7b26\u7684\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u9700\u6c42\u548c\u5b57\u7b26\u4e32\u7684\u590d\u6742\u6027\u3002<strong>str.replace()<\/strong> \u65b9\u6cd5\u7b80\u5355\u76f4\u63a5\uff0c\u9002\u7528\u4e8e\u7b80\u5355\u7684\u66ff\u6362\u9700\u6c42\uff1b<strong>str.translate()<\/strong> \u65b9\u6cd5\u529f\u80fd\u5f3a\u5927\uff0c\u53ef\u4ee5\u4e00\u6b21\u6027\u66ff\u6362\u591a\u4e2a\u5b57\u7b26\uff1b<strong>\u6b63\u5219\u8868\u8fbe\u5f0fre.sub()<\/strong> \u9002\u7528\u4e8e\u590d\u6742\u7684\u66ff\u6362\u9700\u6c42\uff1b<strong>\u5217\u8868\u89e3\u6790\u548cfilter\u65b9\u6cd5<\/strong> \u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u7075\u6d3b\u6027\u3002\u4e86\u89e3\u5e76\u638c\u63e1\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u5728\u5904\u7406\u5b57\u7b26\u4e32\u65f6\u66f4\u52a0\u5f97\u5fc3\u5e94\u624b\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u79fb\u9664\u5b57\u7b26\u4e32\u4e2d\u7684\u7279\u5b9a\u5b57\u7b26\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528<code>str.replace()<\/code>\u65b9\u6cd5\u6765\u79fb\u9664\u7279\u5b9a\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u60f3\u4ece\u5b57\u7b26\u4e32\u4e2d\u53bb\u6389\u5b57\u6bcd&#39;a&#39;\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\uff1a<code>my_string.replace(&#39;a&#39;, &#39;&#39;)<\/code>\u3002\u6b64\u5916\uff0c\u4f7f\u7528<code>str.translate()<\/code>\u65b9\u6cd5\u7ed3\u5408<code>str.maketrans()<\/code>\u4e5f\u80fd\u6709\u6548\u53bb\u6389\u591a\u4e2a\u5b57\u7b26\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\u5982\u4f55\u53bb\u6389\u5b57\u7b26\u4e32\u5f00\u5934\u548c\u7ed3\u5c3e\u7684\u7a7a\u683c\u6216\u7279\u5b9a\u5b57\u7b26\uff1f<\/strong><br \/>\u4f7f\u7528<code>str.strip()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u8f7b\u677e\u53bb\u6389\u5b57\u7b26\u4e32\u5f00\u5934\u548c\u7ed3\u5c3e\u7684\u7a7a\u683c\u6216\u7279\u5b9a\u5b57\u7b26\u3002\u5982\u679c\u9700\u8981\u53bb\u6389\u7279\u5b9a\u5b57\u7b26\uff0c\u53ef\u4ee5\u4f20\u5165\u5b57\u7b26\u53c2\u6570\uff0c\u5982<code>my_string.strip(&#39;xyz&#39;)<\/code>\uff0c\u8fd9\u5c06\u79fb\u9664\u5b57\u7b26\u4e32\u4e24\u7aef\u7684&#39;x&#39;\u3001&#39;y&#39;\u548c&#39;z&#39;\u3002<\/p>\n<p><strong>Python\u4e2d\u6709\u6ca1\u6709\u529e\u6cd5\u53bb\u6389\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u975e\u5b57\u6bcd\u5b57\u7b26\uff1f<\/strong><br \/>\u53ef\u4ee5\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u6765\u79fb\u9664\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u975e\u5b57\u6bcd\u5b57\u7b26\u3002\u501f\u52a9<code>re<\/code>\u6a21\u5757\uff0c\u4f7f\u7528<code>re.sub(&#39;[^a-zA-Z]&#39;, &#39;&#39;, my_string)<\/code>\u53ef\u4ee5\u5c06\u5b57\u7b26\u4e32\u4e2d\u6240\u6709\u975e\u5b57\u6bcd\u7684\u5b57\u7b26\u66ff\u6362\u4e3a\u7a7a\u5b57\u7b26\u4e32\uff0c\u4ece\u800c\u5b9e\u73b0\u53bb\u6389\u975e\u5b57\u6bcd\u5b57\u7b26\u7684\u76ee\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u53bb\u6389\u5176\u4ed6\u5b57\u7b26\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5e38\u89c1\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u5b57\u7b26\u4e32\u7684\u5185\u7f6e\u65b9\u6cd5\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u3001\u5217\u8868\u89e3\u6790\u7b49\u3002 \u6700\u5e38\u7528 [&hellip;]","protected":false},"author":3,"featured_media":1181088,"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\/1181078"}],"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=1181078"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1181078\/revisions"}],"predecessor-version":[{"id":1181089,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1181078\/revisions\/1181089"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1181088"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1181078"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1181078"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1181078"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}