{"id":369,"date":"2025-10-10T15:53:39","date_gmt":"2025-10-10T07:53:39","guid":{"rendered":"http:\/\/www.pyteam.cn\/?p=369"},"modified":"2025-10-10T15:53:39","modified_gmt":"2025-10-10T07:53:39","slug":"%e5%88%86%e5%bd%a2%e6%a0%91-15-5","status":"publish","type":"post","link":"http:\/\/www.pyteam.cn\/index.php\/2025\/10\/10\/%e5%88%86%e5%bd%a2%e6%a0%91-15-5\/","title":{"rendered":"\u5206\u5f62\u6811 15.5"},"content":{"rendered":"\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:clamp(18px, 1.125rem, 27px);font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#90A4AE;--cbp-line-number-width:calc(2 * 0.6 * 1.125rem);line-height:clamp(26px, 1.625rem, 39px);--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#ededed;color:#8198a3\">Python<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#90A4AE;display:none\" aria-label=\"\u590d\u5236\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>def fractal_tree(branch_len, depth, angle=30):\n    \"\"\"\u7ed8\u5236\u5206\u5f62\u6811\"\"\"\n    if depth > 0:\n        # \u7ed8\u5236\u4e3b\u5e72\n        t.forward(branch_len)\n        \n        # \u53f3\u5206\u652f\n        t.right(angle)\n        fractal_tree(branch_len * 0.7, depth-1, angle)\n        \n        # \u5de6\u5206\u652f\n        t.left(2 * angle)\n        fractal_tree(branch_len * 0.7, depth-1, angle)\n        \n        # \u8fd4\u56de\u539f\u4f4d\u7f6e\n        t.right(angle)\n        t.backward(branch_len)\n\n# \u7ed8\u5236\u5206\u5f62\u6811\nt.clear()\nt.penup()\nt.goto(0, -200)\nt.pendown()\nt.left(90)\nt.pencolor(\"green\")\nfractal_tree(80, 6)<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki material-theme-lighter\" style=\"background-color: #FAFAFA\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #9C3EDA\">def<\/span><span style=\"color: #90A4AE\"> <\/span><span style=\"color: #6182B8\">fractal_tree<\/span><span style=\"color: #39ADB5\">(<\/span><span style=\"color: #90A4AE; font-style: italic\">branch_len<\/span><span style=\"color: #39ADB5\">,<\/span><span style=\"color: #90A4AE\"> <\/span><span style=\"color: #90A4AE; font-style: italic\">depth<\/span><span style=\"color: #39ADB5\">,<\/span><span style=\"color: #90A4AE\"> <\/span><span style=\"color: #90A4AE; font-style: italic\">angle<\/span><span style=\"color: #39ADB5\">=<\/span><span style=\"color: #F76D47\">30<\/span><span style=\"color: #39ADB5\">):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">    <\/span><span style=\"color: #39ADB5; font-style: italic\">&quot;&quot;&quot;<\/span><span style=\"color: #90A4AE; font-style: italic\">\u7ed8\u5236\u5206\u5f62\u6811<\/span><span style=\"color: #39ADB5; font-style: italic\">&quot;&quot;&quot;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">    <\/span><span style=\"color: #39ADB5; font-style: italic\">if<\/span><span style=\"color: #90A4AE\"> depth <\/span><span style=\"color: #39ADB5\">&gt;<\/span><span style=\"color: #90A4AE\"> <\/span><span style=\"color: #F76D47\">0<\/span><span style=\"color: #39ADB5\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        <\/span><span style=\"color: #90A4AE; font-style: italic\"># \u7ed8\u5236\u4e3b\u5e72<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        t<\/span><span style=\"color: #39ADB5\">.<\/span><span style=\"color: #6182B8\">forward<\/span><span style=\"color: #39ADB5\">(<\/span><span style=\"color: #6182B8\">branch_len<\/span><span style=\"color: #39ADB5\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        <\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        <\/span><span style=\"color: #90A4AE; font-style: italic\"># \u53f3\u5206\u652f<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        t<\/span><span style=\"color: #39ADB5\">.<\/span><span style=\"color: #6182B8\">right<\/span><span style=\"color: #39ADB5\">(<\/span><span style=\"color: #6182B8\">angle<\/span><span style=\"color: #39ADB5\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        <\/span><span style=\"color: #6182B8\">fractal_tree<\/span><span style=\"color: #39ADB5\">(<\/span><span style=\"color: #6182B8\">branch_len <\/span><span style=\"color: #39ADB5\">*<\/span><span style=\"color: #6182B8\"> <\/span><span style=\"color: #F76D47\">0.7<\/span><span style=\"color: #39ADB5\">,<\/span><span style=\"color: #6182B8\"> depth<\/span><span style=\"color: #39ADB5\">-<\/span><span style=\"color: #F76D47\">1<\/span><span style=\"color: #39ADB5\">,<\/span><span style=\"color: #6182B8\"> angle<\/span><span style=\"color: #39ADB5\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        <\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        <\/span><span style=\"color: #90A4AE; font-style: italic\"># \u5de6\u5206\u652f<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        t<\/span><span style=\"color: #39ADB5\">.<\/span><span style=\"color: #6182B8\">left<\/span><span style=\"color: #39ADB5\">(<\/span><span style=\"color: #F76D47\">2<\/span><span style=\"color: #6182B8\"> <\/span><span style=\"color: #39ADB5\">*<\/span><span style=\"color: #6182B8\"> angle<\/span><span style=\"color: #39ADB5\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        <\/span><span style=\"color: #6182B8\">fractal_tree<\/span><span style=\"color: #39ADB5\">(<\/span><span style=\"color: #6182B8\">branch_len <\/span><span style=\"color: #39ADB5\">*<\/span><span style=\"color: #6182B8\"> <\/span><span style=\"color: #F76D47\">0.7<\/span><span style=\"color: #39ADB5\">,<\/span><span style=\"color: #6182B8\"> depth<\/span><span style=\"color: #39ADB5\">-<\/span><span style=\"color: #F76D47\">1<\/span><span style=\"color: #39ADB5\">,<\/span><span style=\"color: #6182B8\"> angle<\/span><span style=\"color: #39ADB5\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        <\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        <\/span><span style=\"color: #90A4AE; font-style: italic\"># \u8fd4\u56de\u539f\u4f4d\u7f6e<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        t<\/span><span style=\"color: #39ADB5\">.<\/span><span style=\"color: #6182B8\">right<\/span><span style=\"color: #39ADB5\">(<\/span><span style=\"color: #6182B8\">angle<\/span><span style=\"color: #39ADB5\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">        t<\/span><span style=\"color: #39ADB5\">.<\/span><span style=\"color: #6182B8\">backward<\/span><span style=\"color: #39ADB5\">(<\/span><span style=\"color: #6182B8\">branch_len<\/span><span style=\"color: #39ADB5\">)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE; font-style: italic\"># \u7ed8\u5236\u5206\u5f62\u6811<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">t<\/span><span style=\"color: #39ADB5\">.<\/span><span style=\"color: #6182B8\">clear<\/span><span style=\"color: #39ADB5\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">t<\/span><span style=\"color: #39ADB5\">.<\/span><span style=\"color: #6182B8\">penup<\/span><span style=\"color: #39ADB5\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">t<\/span><span style=\"color: #39ADB5\">.<\/span><span style=\"color: #6182B8\">goto<\/span><span style=\"color: #39ADB5\">(<\/span><span style=\"color: #F76D47\">0<\/span><span style=\"color: #39ADB5\">,<\/span><span style=\"color: #6182B8\"> <\/span><span style=\"color: #39ADB5\">-<\/span><span style=\"color: #F76D47\">200<\/span><span style=\"color: #39ADB5\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">t<\/span><span style=\"color: #39ADB5\">.<\/span><span style=\"color: #6182B8\">pendown<\/span><span style=\"color: #39ADB5\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">t<\/span><span style=\"color: #39ADB5\">.<\/span><span style=\"color: #6182B8\">left<\/span><span style=\"color: #39ADB5\">(<\/span><span style=\"color: #F76D47\">90<\/span><span style=\"color: #39ADB5\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #90A4AE\">t<\/span><span style=\"color: #39ADB5\">.<\/span><span style=\"color: #6182B8\">pencolor<\/span><span style=\"color: #39ADB5\">(<\/span><span style=\"color: #39ADB5\">&quot;<\/span><span style=\"color: #91B859\">green<\/span><span style=\"color: #39ADB5\">&quot;<\/span><span style=\"color: #39ADB5\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6182B8\">fractal_tree<\/span><span style=\"color: #39ADB5\">(<\/span><span style=\"color: #F76D47\">80<\/span><span style=\"color: #39ADB5\">,<\/span><span style=\"color: #6182B8\"> <\/span><span style=\"color: #F76D47\">6<\/span><span style=\"color: #39ADB5\">)<\/span><\/span><\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":74,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24,1,5],"tags":[],"class_list":["post-369","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-24","category-1","category-5"],"views":740,"_links":{"self":[{"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/posts\/369","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/comments?post=369"}],"version-history":[{"count":1,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/posts\/369\/revisions"}],"predecessor-version":[{"id":370,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/posts\/369\/revisions\/370"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/media\/74"}],"wp:attachment":[{"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/media?parent=369"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/categories?post=369"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/tags?post=369"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}