{"id":2747,"date":"2025-03-14T22:24:56","date_gmt":"2025-03-14T14:24:56","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2747"},"modified":"2025-03-14T22:24:56","modified_gmt":"2025-03-14T14:24:56","slug":"python3-%e6%9d%a1%e4%bb%b6%e6%8e%a7%e5%88%b6%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/14\/python3-%e6%9d%a1%e4%bb%b6%e6%8e%a7%e5%88%b6%e8%af%a6%e8%a7%a3\/","title":{"rendered":"Python3 \u6761\u4ef6\u63a7\u5236\u8be6\u89e3"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>1. \u6761\u4ef6\u63a7\u5236\u7b80\u4ecb<\/strong><\/h2>\n\n\n\n<p>Python \u7684<strong>\u6761\u4ef6\u63a7\u5236\uff08Decision Making\uff09<\/strong>\u7528\u4e8e\u6839\u636e\u8868\u8fbe\u5f0f\u7684\u771f\u5047\u6267\u884c\u4e0d\u540c\u7684\u4ee3\u7801\u5206\u652f\u3002\u4e3b\u8981\u7684\u6761\u4ef6\u63a7\u5236\u8bed\u53e5\u6709\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>if<\/code> \u8bed\u53e5<\/li>\n\n\n\n<li><code>if...else<\/code> \u8bed\u53e5<\/li>\n\n\n\n<li><code>if...elif...else<\/code> \u8bed\u53e5<\/li>\n\n\n\n<li><strong>\u5d4c\u5957\u6761\u4ef6<\/strong><\/li>\n\n\n\n<li><strong>\u7b80\u5199\uff08\u4e09\u5143\u8fd0\u7b97\u7b26\uff09<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2. <code>if<\/code> \u8bed\u53e5<\/strong><\/h2>\n\n\n\n<p><strong><code>if<\/code> \u8bed\u53e5\u7528\u4e8e\u6267\u884c\u67d0\u4e2a\u6761\u4ef6\u6210\u7acb\u65f6\u7684\u4ee3\u7801\u5757\u3002<\/strong><\/p>\n\n\n\n<p>\ud83d\udccc <strong>\u8bed\u6cd5<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>if \u6761\u4ef6\u8868\u8fbe\u5f0f:\n    \u4ee3\u7801\u5757<\/code><\/pre>\n\n\n\n<p>\ud83d\udccc <strong>\u793a\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>age = 18\nif age &gt;= 18:\n    print(\"\u4f60\u5df2\u6210\u5e74\uff01\")  # \u6761\u4ef6\u6ee1\u8db3\u65f6\u6267\u884c<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3. <code>if...else<\/code> \u8bed\u53e5<\/strong><\/h2>\n\n\n\n<p>\u5982\u679c\u6761\u4ef6\u4e3a <code>True<\/code>\uff0c\u6267\u884c <code>if<\/code> \u4ee3\u7801\u5757\uff0c\u5426\u5219\u6267\u884c <code>else<\/code> \u4ee3\u7801\u5757\u3002<\/p>\n\n\n\n<p>\ud83d\udccc <strong>\u8bed\u6cd5<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>if \u6761\u4ef6:\n    \u4ee3\u7801\u57571  # \u6761\u4ef6\u6210\u7acb\u65f6\u6267\u884c\nelse:\n    \u4ee3\u7801\u57572  # \u6761\u4ef6\u4e0d\u6210\u7acb\u65f6\u6267\u884c<\/code><\/pre>\n\n\n\n<p>\ud83d\udccc <strong>\u793a\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>age = 16\nif age &gt;= 18:\n    print(\"\u4f60\u5df2\u6210\u5e74\uff01\")\nelse:\n    print(\"\u4f60\u8fd8\u672a\u6210\u5e74\u3002\")<\/code><\/pre>\n\n\n\n<p>\ud83d\udd39 <strong>\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u4f60\u8fd8\u672a\u6210\u5e74\u3002<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>4. <code>if...elif...else<\/code> \u8bed\u53e5<\/strong><\/h2>\n\n\n\n<p>\u5f53\u6709\u591a\u4e2a\u6761\u4ef6\u9700\u8981\u5224\u65ad\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>elif<\/code>\uff08\u5373\u201celse if\u201d\uff09\u3002<\/p>\n\n\n\n<p>\ud83d\udccc <strong>\u8bed\u6cd5<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>if \u6761\u4ef61:\n    \u4ee3\u7801\u57571  # \u6761\u4ef61\u6210\u7acb\u65f6\u6267\u884c\nelif \u6761\u4ef62:\n    \u4ee3\u7801\u57572  # \u6761\u4ef61\u4e0d\u6210\u7acb\uff0c\u6761\u4ef62\u6210\u7acb\u65f6\u6267\u884c\nelif \u6761\u4ef63:\n    \u4ee3\u7801\u57573  # \u6761\u4ef61\u30012\u4e0d\u6210\u7acb\uff0c\u6761\u4ef63\u6210\u7acb\u65f6\u6267\u884c\nelse:\n    \u4ee3\u7801\u57574  # \u4ee5\u4e0a\u6761\u4ef6\u90fd\u4e0d\u6210\u7acb\u65f6\u6267\u884c<\/code><\/pre>\n\n\n\n<p>\ud83d\udccc <strong>\u793a\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>score = 85\n\nif score &gt;= 90:\n    print(\"\u4f18\u79c0\")\nelif score &gt;= 80:\n    print(\"\u826f\u597d\")\nelif score &gt;= 60:\n    print(\"\u53ca\u683c\")\nelse:\n    print(\"\u4e0d\u53ca\u683c\")<\/code><\/pre>\n\n\n\n<p>\ud83d\udd39 <strong>\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u826f\u597d<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>5. <code>if<\/code> \u8bed\u53e5\u7684\u5d4c\u5957<\/strong><\/h2>\n\n\n\n<p>\u53ef\u4ee5\u5728 <code>if<\/code> \u4ee3\u7801\u5757\u5185\u90e8\u518d\u4f7f\u7528 <code>if<\/code> \u8bed\u53e5\uff0c\u8fd9\u88ab\u79f0\u4e3a<strong>\u5d4c\u5957 <code>if<\/code> \u8bed\u53e5<\/strong>\u3002<\/p>\n\n\n\n<p>\ud83d\udccc <strong>\u793a\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>age = 20\ngender = \"\u7537\"\n\nif age &gt;= 18:\n    if gender == \"\u7537\":\n        print(\"\u4f60\u662f\u6210\u5e74\u7537\u6027\")\n    else:\n        print(\"\u4f60\u662f\u6210\u5e74\u5973\u6027\")\nelse:\n    print(\"\u4f60\u672a\u6210\u5e74\")<\/code><\/pre>\n\n\n\n<p>\ud83d\udd39 <strong>\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u4f60\u662f\u6210\u5e74\u7537\u6027<\/code><\/pre>\n\n\n\n<p>\u26a0 <strong>\u5d4c\u5957 <code>if<\/code> \u8bed\u53e5\u5e94\u907f\u514d\u8fc7\u591a\u5c42\u7ea7\uff0c\u4ee5\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u3002<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>6. \u903b\u8f91\u8fd0\u7b97\u7b26\u4e0e\u6761\u4ef6\u63a7\u5236<\/strong><\/h2>\n\n\n\n<p><code>and<\/code>\u3001<code>or<\/code> \u548c <code>not<\/code> \u8fd0\u7b97\u7b26\u53ef\u7528\u4e8e\u8fde\u63a5\u591a\u4e2a\u6761\u4ef6\u3002<\/p>\n\n\n\n<p>\ud83d\udccc <strong>\u793a\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>age = 25\nincome = 5000\n\nif age &gt;= 18 and income &gt; 3000:\n    print(\"\u7b26\u5408\u8d37\u6b3e\u8d44\u683c\")\nelse:\n    print(\"\u4e0d\u7b26\u5408\u8d37\u6b3e\u8d44\u683c\")<\/code><\/pre>\n\n\n\n<p>\ud83d\udd39 <strong>\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u7b26\u5408\u8d37\u6b3e\u8d44\u683c<\/code><\/pre>\n\n\n\n<p>\ud83d\udccc <strong>\u4f7f\u7528 <code>or<\/code><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>is_student = True\nis_senior = False\n\nif is_student or is_senior:\n    print(\"\u4eab\u53d7\u6298\u6263\")\nelse:\n    print(\"\u65e0\u6298\u6263\")<\/code><\/pre>\n\n\n\n<p>\ud83d\udd39 <strong>\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u4eab\u53d7\u6298\u6263<\/code><\/pre>\n\n\n\n<p>\ud83d\udccc <strong>\u4f7f\u7528 <code>not<\/code><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>is_raining = False\n\nif not is_raining:\n    print(\"\u5929\u6c14\u6674\u6717\uff0c\u53ef\u4ee5\u51fa\u95e8\")\nelse:\n    print(\"\u4e0b\u96e8\u4e86\uff0c\u5e26\u4f1e\uff01\")<\/code><\/pre>\n\n\n\n<p>\ud83d\udd39 <strong>\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5929\u6c14\u6674\u6717\uff0c\u53ef\u4ee5\u51fa\u95e8<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>7. \u4e09\u5143\u8fd0\u7b97\u7b26\uff08\u6761\u4ef6\u8868\u8fbe\u5f0f\uff09<\/strong><\/h2>\n\n\n\n<p>Python \u63d0\u4f9b\u4e86\u7b80\u6d01\u7684<strong>\u4e09\u5143\u8fd0\u7b97\u7b26\uff08Ternary Operator\uff09<\/strong>\uff0c\u7528\u4e8e\u7b80\u5316 <code>if...else<\/code> \u8bed\u53e5\u3002<\/p>\n\n\n\n<p>\ud83d\udccc <strong>\u8bed\u6cd5<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u53d8\u91cf = \u503c1 if \u6761\u4ef6 else \u503c2<\/code><\/pre>\n\n\n\n<p>\ud83d\udccc <strong>\u793a\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>age = 20\nstatus = \"\u6210\u5e74\u4eba\" if age &gt;= 18 else \"\u672a\u6210\u5e74\u4eba\"\nprint(status)<\/code><\/pre>\n\n\n\n<p>\ud83d\udd39 <strong>\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u6210\u5e74\u4eba<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>8. <code>pass<\/code> \u8bed\u53e5<\/strong><\/h2>\n\n\n\n<p><code>pass<\/code> \u8bed\u53e5<strong>\u7528\u4e8e\u5360\u4f4d<\/strong>\uff0c\u9632\u6b62\u8bed\u6cd5\u9519\u8bef\u3002\u4f8b\u5982\uff0c\u5728 <code>if<\/code> \u8bed\u53e5\u4e2d\u4e0d\u60f3\u6267\u884c\u4efb\u4f55\u64cd\u4f5c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>age = 18\nif age &gt;= 18:\n    pass  # \u5360\u4f4d\uff0c\u672a\u6765\u53ef\u80fd\u8865\u5145\u4ee3\u7801\nprint(\"\u4ee3\u7801\u7ee7\u7eed\u6267\u884c\")<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>9. <code>match<\/code> \u8bed\u53e5\uff08Python 3.10+\uff09<\/strong><\/h2>\n\n\n\n<p>Python 3.10 \u5f15\u5165\u4e86 <code>match<\/code> \u8bed\u53e5\uff0c\u7c7b\u4f3c <code>switch-case<\/code>\u3002<\/p>\n\n\n\n<p>\ud83d\udccc <strong>\u8bed\u6cd5<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>match \u53d8\u91cf:\n    case \u503c1:\n        \u4ee3\u7801\u57571\n    case \u503c2:\n        \u4ee3\u7801\u57572\n    case _:\n        \u4ee3\u7801\u57573  # \u9ed8\u8ba4\u60c5\u51b5<\/code><\/pre>\n\n\n\n<p>\ud83d\udccc <strong>\u793a\u4f8b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>fruit = \"\u82f9\u679c\"\n\nmatch fruit:\n    case \"\u82f9\u679c\":\n        print(\"\u8fd9\u662f\u4e00\u4e2a\u82f9\u679c\")\n    case \"\u9999\u8549\":\n        print(\"\u8fd9\u662f\u4e00\u4e2a\u9999\u8549\")\n    case _:\n        print(\"\u672a\u77e5\u6c34\u679c\")<\/code><\/pre>\n\n\n\n<p>\ud83d\udd39 <strong>\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u8fd9\u662f\u4e00\u4e2a\u82f9\u679c<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>10. \u603b\u7ed3<\/strong><\/h2>\n\n\n\n<p>\u2705 <strong><code>if<\/code> \u8bed\u53e5<\/strong>\uff1a\u5355\u4e2a\u6761\u4ef6\u5224\u65ad\u3002<br>\u2705 <strong><code>if...else<\/code> \u8bed\u53e5<\/strong>\uff1a\u6709 <code>False<\/code> \u5206\u652f\u3002<br>\u2705 <strong><code>if...elif...else<\/code> \u8bed\u53e5<\/strong>\uff1a\u591a\u4e2a\u6761\u4ef6\u5224\u65ad\u3002<br>\u2705 <strong>\u5d4c\u5957 <code>if<\/code><\/strong>\uff1a<code>if<\/code> \u8bed\u53e5\u4e2d\u5d4c\u5957 <code>if<\/code>\u3002<br>\u2705 <strong>\u4e09\u5143\u8fd0\u7b97\u7b26<\/strong>\uff1a\u7b80\u6d01\u7684 <code>if...else<\/code>\u3002<br>\u2705 <strong><code>match<\/code> \u8bed\u53e5\uff08Python 3.10+\uff09<\/strong>\uff1a\u7c7b\u4f3c <code>switch-case<\/code>\u3002<br>\u2705 <strong><code>pass<\/code> \u8bed\u53e5<\/strong>\uff1a\u5360\u4f4d\u8bed\u53e5\uff0c\u4e0d\u6267\u884c\u4efb\u4f55\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p><strong>\u6761\u4ef6\u63a7\u5236\u662f Python \u903b\u8f91\u7684\u6838\u5fc3\uff0c\u5408\u7406\u8fd0\u7528\u53ef\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\uff01<\/strong>\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. \u6761\u4ef6\u63a7\u5236\u7b80\u4ecb Python \u7684\u6761\u4ef6\u63a7\u5236\uff08Decision Making\uff09\u7528\u4e8e\u6839\u636e\u8868\u8fbe\u5f0f\u7684\u771f\u5047\u6267\u884c\u4e0d\u540c\u7684\u4ee3 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2748,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[79],"tags":[],"class_list":["post-2747","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python-3-"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2747","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=2747"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2747\/revisions"}],"predecessor-version":[{"id":2749,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2747\/revisions\/2749"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/2748"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2747"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2747"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2747"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}