{"id":1177408,"date":"2025-01-15T17:57:39","date_gmt":"2025-01-15T09:57:39","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1177408.html"},"modified":"2025-01-15T17:57:42","modified_gmt":"2025-01-15T09:57:42","slug":"python%e5%88%97%e8%a1%a8%e5%a6%82%e4%bd%95%e5%80%92%e7%9d%80%e5%8f%96","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1177408.html","title":{"rendered":"python\u5217\u8868\u5982\u4f55\u5012\u7740\u53d6"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25112342\/fa12df38-2c57-41b0-aa3b-01565eed4bf3.webp\" alt=\"python\u5217\u8868\u5982\u4f55\u5012\u7740\u53d6\" \/><\/p>\n<p><p> \u5728Python\u4e2d\uff0c<strong>\u53ef\u4ee5\u4f7f\u7528\u5207\u7247\u3001reverse()\u65b9\u6cd5\u3001reversed()\u51fd\u6570\u7b49\u65b9\u5f0f\u5012\u7740\u53d6\u5217\u8868<\/strong>\u3002\u5176\u4e2d\uff0c\u5207\u7247\u64cd\u4f5c\u6700\u4e3a\u5e38\u7528\u4e5f\u6700\u4e3a\u7b80\u6d01\u3002\u4e0b\u9762\u8be6\u7ec6\u4ecb\u7ecd\u51e0\u79cd\u5e38\u89c1\u7684\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n<ol>\n<li><strong>\u5207\u7247\u64cd\u4f5c<\/strong>  <\/li>\n<li><strong>reverse()\u65b9\u6cd5<\/strong>  <\/li>\n<li><strong>reversed()\u51fd\u6570<\/strong>  <\/li>\n<li><strong>\u4f7f\u7528\u5faa\u73af<\/strong><\/li>\n<\/ol>\n<p><h3>\u4e00\u3001\u5207\u7247\u64cd\u4f5c<\/h3>\n<\/p>\n<p><p>\u5207\u7247\u64cd\u4f5c\u662f\u6700\u5e38\u7528\u4e14\u6700\u4e3a\u7b80\u6d01\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u901a\u8fc7\u5207\u7247\u64cd\u4f5c\u53ef\u4ee5\u8f7b\u677e\u5730\u5012\u7740\u83b7\u53d6\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002\u5207\u7247\u8bed\u6cd5\u4e3a<code>list[start:stop:step]<\/code>\uff0c\u5176\u4e2d<code>start<\/code>\u8868\u793a\u8d77\u59cb\u7d22\u5f15\uff0c<code>stop<\/code>\u8868\u793a\u7ed3\u675f\u7d22\u5f15\uff0c<code>step<\/code>\u8868\u793a\u6b65\u957f\u3002\u8981\u5012\u7740\u53d6\u5217\u8868\uff0c\u53ef\u4ee5\u5c06<code>step<\/code>\u8bbe\u4e3a-1\u3002<\/p>\n<\/p>\n<p><p>\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [1, 2, 3, 4, 5]<\/p>\n<p>reversed_list = my_list[::-1]<\/p>\n<p>print(reversed_list)  # \u8f93\u51fa: [5, 4, 3, 2, 1]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>\u8be6\u7ec6\u63cf\u8ff0\uff1a<\/strong>\u5207\u7247\u64cd\u4f5c\u7684<code>step<\/code>\u53c2\u6570\u8bbe\u4e3a-1\u65f6\uff0c\u8868\u793a\u4ece\u5217\u8868\u7684\u672b\u5c3e\u5f00\u59cb\u5f80\u524d\u53d6\u503c\u3002\u6b64\u65f6\uff0c<code>start<\/code>\u548c<code>stop<\/code>\u53c2\u6570\u53ef\u4ee5\u7701\u7565\uff0c\u9ed8\u8ba4\u8868\u793a\u4ece\u5217\u8868\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u53d6\u5230\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001reverse()\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p><code>reverse()<\/code>\u65b9\u6cd5\u662f\u5217\u8868\u5bf9\u8c61\u7684\u4e00\u4e2a\u65b9\u6cd5\uff0c\u5b83\u4f1a\u76f4\u63a5\u4fee\u6539\u539f\u5217\u8868\uff0c\u4f7f\u5176\u5143\u7d20\u987a\u5e8f\u53cd\u8f6c\u3002<\/p>\n<\/p>\n<p><p>\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [1, 2, 3, 4, 5]<\/p>\n<p>my_list.reverse()<\/p>\n<p>print(my_list)  # \u8f93\u51fa: [5, 4, 3, 2, 1]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>\u8be6\u7ec6\u63cf\u8ff0\uff1a<\/strong><code>reverse()<\/code>\u65b9\u6cd5\u662f\u4e00\u4e2a\u539f\u5730\u64cd\u4f5c\u7684\u65b9\u6cd5\uff0c\u5b83\u4e0d\u4f1a\u521b\u5efa\u65b0\u7684\u5217\u8868\uff0c\u800c\u662f\u76f4\u63a5\u5728\u539f\u5217\u8868\u4e0a\u8fdb\u884c\u53cd\u8f6c\u64cd\u4f5c\u3002\u5982\u679c\u4e0d\u5e0c\u671b\u4fee\u6539\u539f\u5217\u8868\uff0c\u53ef\u4ee5\u5148\u4f7f\u7528\u5217\u8868\u7684\u62f7\u8d1d\u65b9\u6cd5<code>copy()<\/code>\u521b\u5efa\u4e00\u4e2a\u526f\u672c\uff0c\u7136\u540e\u518d\u5bf9\u526f\u672c\u8fdb\u884c\u53cd\u8f6c\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001reversed()\u51fd\u6570<\/h3>\n<\/p>\n<p><p><code>reversed()<\/code>\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u53cd\u8f6c\u7684\u8fed\u4ee3\u5668\uff0c\u4e0d\u4f1a\u4fee\u6539\u539f\u5217\u8868\u3002\u53ef\u4ee5\u4f7f\u7528<code>list()<\/code>\u51fd\u6570\u5c06\u5176\u8f6c\u6362\u4e3a\u5217\u8868\u3002<\/p>\n<\/p>\n<p><p>\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [1, 2, 3, 4, 5]<\/p>\n<p>reversed_iterator = reversed(my_list)<\/p>\n<p>reversed_list = list(reversed_iterator)<\/p>\n<p>print(reversed_list)  # \u8f93\u51fa: [5, 4, 3, 2, 1]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>\u8be6\u7ec6\u63cf\u8ff0\uff1a<\/strong><code>reversed()<\/code>\u51fd\u6570\u4e0d\u4f1a\u4fee\u6539\u539f\u5217\u8868\uff0c\u800c\u662f\u8fd4\u56de\u4e00\u4e2a\u53cd\u5411\u8fed\u4ee3\u5668\u3002\u901a\u8fc7\u5c06\u8be5\u8fed\u4ee3\u5668\u8f6c\u6362\u4e3a\u5217\u8868\uff0c\u53ef\u4ee5\u83b7\u5f97\u4e00\u4e2a\u65b0\u7684\u53cd\u8f6c\u540e\u7684\u5217\u8868\u3002\u5982\u679c\u53ea\u9700\u8981\u8fed\u4ee3\u5668\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528<code>reversed()<\/code>\u51fd\u6570\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u4f7f\u7528\u5faa\u73af<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528\u5faa\u73af\u4e5f\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u65b9\u6cd5\uff0c\u901a\u8fc7\u904d\u5386\u5217\u8868\u5e76\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u4e2d\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5217\u8868\u7684\u53cd\u8f6c\u3002<\/p>\n<\/p>\n<p><p>\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [1, 2, 3, 4, 5]<\/p>\n<p>reversed_list = []<\/p>\n<p>for item in my_list[::-1]:<\/p>\n<p>    reversed_list.append(item)<\/p>\n<p>print(reversed_list)  # \u8f93\u51fa: [5, 4, 3, 2, 1]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>\u8be6\u7ec6\u63cf\u8ff0\uff1a<\/strong>\u901a\u8fc7\u5faa\u73af\u904d\u5386\u5217\u8868\u7684\u5143\u7d20\uff0c\u5e76\u5c06\u5176\u6dfb\u52a0\u5230\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u4e2d\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5217\u8868\u7684\u53cd\u8f6c\u3002\u867d\u7136\u8fd9\u79cd\u65b9\u6cd5\u6bd4\u524d\u51e0\u79cd\u65b9\u6cd5\u7a0d\u663e\u7e41\u7410\uff0c\u4f46\u5728\u4e00\u4e9b\u7279\u5b9a\u573a\u666f\u4e0b\u53ef\u80fd\u66f4\u4e3a\u7075\u6d3b\u548c\u9002\u7528\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u901a\u8fc7\u4ee5\u4e0a\u51e0\u79cd\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u5b9e\u73b0Python\u5217\u8868\u7684\u5012\u7740\u53d6\u503c\u64cd\u4f5c\u3002<strong>\u5207\u7247\u64cd\u4f5c\u6700\u4e3a\u7b80\u6d01\u548c\u5e38\u7528<\/strong>\uff0c<strong>reverse()\u65b9\u6cd5\u76f4\u63a5\u4fee\u6539\u539f\u5217\u8868<\/strong>\uff0c<strong>reversed()\u51fd\u6570\u8fd4\u56de\u53cd\u5411\u8fed\u4ee3\u5668<\/strong>\uff0c<strong>\u4f7f\u7528\u5faa\u73af\u5219\u66f4\u52a0\u7075\u6d3b<\/strong>\u3002\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u9002\u5408\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u66f4\u9ad8\u6548\u5730\u5904\u7406\u5217\u8868\u7684\u53cd\u8f6c\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u4ee5\u76f8\u53cd\u7684\u987a\u5e8f\u6253\u5370\u5217\u8868\u4e2d\u7684\u5143\u7d20\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5207\u7247\u529f\u80fd\u6765\u5feb\u901f\u53cd\u8f6c\u5217\u8868\u3002\u901a\u8fc7<code>list[::-1]<\/code>\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u53cd\u8f6c\u5217\u8868\u3002\u5982\u679c\u5e0c\u671b\u76f4\u63a5\u5728\u63a7\u5236\u53f0\u6253\u5370\uff0c\u53ef\u4ee5\u4f7f\u7528<code>print(list[::-1])<\/code>\uff0c\u8fd9\u6837\u4f1a\u8f93\u51fa\u539f\u5217\u8868\u7684\u5012\u5e8f\u5143\u7d20\u3002<\/p>\n<p><strong>\u6709\u54ea\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u53cd\u8f6cPython\u5217\u8868\u800c\u4e0d\u4f7f\u7528\u5207\u7247\uff1f<\/strong><br \/>\u9664\u4e86\u5207\u7247\uff0cPython\u7684\u5185\u7f6e\u65b9\u6cd5<code>reverse()<\/code>\u4e5f\u53ef\u4ee5\u7528\u6765\u53cd\u8f6c\u5217\u8868\u3002\u8be5\u65b9\u6cd5\u76f4\u63a5\u5728\u539f\u5217\u8868\u4e0a\u8fdb\u884c\u64cd\u4f5c\uff0c\u4e0d\u4f1a\u8fd4\u56de\u65b0\u5217\u8868\u3002\u4f8b\u5982\uff0c\u901a\u8fc7<code>list.reverse()<\/code>\uff0c\u539f\u5217\u8868\u4f1a\u88ab\u4fee\u6539\u4e3a\u5012\u5e8f\u6392\u5217\u3002\u53e6\u5916\uff0c\u4f7f\u7528<code>reversed()<\/code>\u51fd\u6570\u4e5f\u53ef\u83b7\u5f97\u4e00\u4e2a\u53cd\u5411\u8fed\u4ee3\u5668\uff0c\u901a\u8fc7<code>list(reversed(list))<\/code>\u53ef\u4ee5\u751f\u6210\u4e00\u4e2a\u53cd\u8f6c\u540e\u7684\u65b0\u5217\u8868\u3002<\/p>\n<p><strong>\u5728\u53cd\u8f6c\u5217\u8868\u65f6\uff0c\u5982\u4f55\u4fdd\u6301\u5217\u8868\u5143\u7d20\u7684\u539f\u59cb\u6570\u636e\u7c7b\u578b\uff1f<\/strong><br \/>\u53cd\u8f6c\u5217\u8868\u7684\u64cd\u4f5c\u672c\u8eab\u4e0d\u4f1a\u6539\u53d8\u5143\u7d20\u7684\u6570\u636e\u7c7b\u578b\u3002\u65e0\u8bba\u662f\u6570\u5b57\u3001\u5b57\u7b26\u4e32\u8fd8\u662f\u5176\u4ed6\u5bf9\u8c61\u7c7b\u578b\uff0c\u53cd\u8f6c\u540e\u7684\u5217\u8868\u4f1a\u4fdd\u6301\u4e0e\u539f\u5217\u8868\u76f8\u540c\u7684\u5143\u7d20\u7c7b\u578b\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u653e\u5fc3\u4f7f\u7528\u4e0a\u8ff0\u7684\u53cd\u8f6c\u65b9\u6cd5\uff0c\u5f97\u5230\u7684\u7ed3\u679c\u5c06\u4e0e\u539f\u59cb\u6570\u636e\u4e00\u81f4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5207\u7247\u3001reverse()\u65b9\u6cd5\u3001reversed()\u51fd\u6570\u7b49\u65b9\u5f0f\u5012\u7740\u53d6\u5217\u8868\u3002\u5176\u4e2d\uff0c\u5207\u7247\u64cd [&hellip;]","protected":false},"author":3,"featured_media":1177413,"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\/1177408"}],"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=1177408"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1177408\/revisions"}],"predecessor-version":[{"id":1177414,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1177408\/revisions\/1177414"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1177413"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1177408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1177408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1177408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}