{"id":115415,"date":"2026-10-12T04:25:13","date_gmt":"2026-10-11T20:25:13","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/115415.html"},"modified":"2026-10-12T04:25:13","modified_gmt":"2026-10-11T20:25:13","slug":"numpy%e6%95%b0%e6%8d%ae%e5%a4%84%e7%90%86%e8%af%a6%e8%a7%a3-02%ef%bc%9a%e7%8e%a9%e8%bd%ac%e9%ab%98%e6%80%a7%e8%83%bd%e6%95%b0%e7%bb%84%ef%bc%8c%e5%91%8a%e5%88%ab%e4%bd%8e%e6%95%88%e5%be%aa%e7%8e%af","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/115415.html","title":{"rendered":"Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02\uff1a\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4\uff0c\u544a\u522b\u4f4e\u6548\u5faa\u73af"},"content":{"rendered":"<\/p>\n<h4>Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02&#xff1a;\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4&#xff0c;\u544a\u522b\u4f4e\u6548\u5faa\u73af<\/h4>\n<ul>\n<li>Bilibili \u540c\u6b65\u89c6\u9891<\/li>\n<li>\u524d\u8a00<\/li>\n<li>\u4e00\u3001\u521d\u8bc6 ndarray&#xff1a;\u6570\u7ec4 vs Python \u5217\u8868<\/li>\n<li>\u4e8c\u3001\u82b1\u5f0f\u521b\u5efa\u5404\u7c7b\u6570\u7ec4&#x1f4e6;<\/li>\n<li>\n<ul>\n<li>1. arange&#xff1a;\u751f\u6210\u7b49\u5dee\u5e8f\u5217&#xff08;\u7ec8\u70b9\u4e0d\u5305\u542b&#xff09;<\/li>\n<li>2. linspace&#xff1a;\u5747\u5206\u6307\u5b9a\u533a\u95f4&#xff08;\u7ec8\u70b9\u5305\u542b&#xff09;<\/li>\n<li>3. \u591a\u7ef4\u6570\u7ec4 &amp; shape \u67e5\u770b\u5f62\u72b6<\/li>\n<li>4. reshape \u6539\u53d8\u5f62\u72b6\u3001\u77e9\u9635\u8f6c\u7f6e<\/li>\n<li>5. \u751f\u6210\u968f\u673a\u6570\u6570\u7ec4&#x1f3b2;<\/li>\n<\/ul>\n<\/li>\n<li>\u4e09\u3001\u7d22\u5f15\u4e0e\u5207\u7247&#xff1a;\u63d0\u53d6\u60f3\u8981\u7684\u6570\u636e\u2702\ufe0f<\/li>\n<li>\n<ul>\n<li>\u4e00\u7ef4\u6570\u7ec4\u7d22\u5f15\u5207\u7247<\/li>\n<li>\u4e8c\u7ef4\u6570\u7ec4\u7d22\u5f15<\/li>\n<\/ul>\n<\/li>\n<li>\u56db\u3001\u5e7f\u64ad (Broadcast)&#xff1a;NumPy \u7684\u9ed1\u9b54\u6cd5\u26a1<\/li>\n<li>\u4e94\u3001\u6027\u80fd\u78be\u538b&#xff1a;\u4e3a\u4ec0\u4e48 NumPy \u6bd4\u539f\u751f Python \u5feb&#xff1f;&#x1f680;<\/li>\n<li>\u5c0f\u7ed3&#x1f4dd;<\/li>\n<\/ul>\n<p>\u6458\u8981&#xff1a;NumPy \u662f Python \u79d1\u5b66\u8ba1\u7b97\u751f\u6001\u7684\u57fa\u77f3&#xff0c;\u4e0d\u7ba1\u662f\u6570\u636e\u5206\u6790\u3001\u673a\u5668\u5b66\u4e60\u8fd8\u662f\u6570\u503c\u4eff\u771f&#xff0c;\u51e0\u4e4e\u90fd\u79bb\u4e0d\u5f00\u5b83\u3002\u672c\u6587\u4ece\u57fa\u7840\u7528\u6cd5\u3001\u6570\u7ec4\u521b\u5efa\u3001\u7d22\u5f15\u5207\u7247\u3001\u5e7f\u64ad\u673a\u5236\u5230\u6027\u80fd\u5bf9\u6bd4&#xff0c;\u5e26\u4f60\u5feb\u901f\u4e0a\u624b NumPy \u6838\u5fc3\u80fd\u529b&#xff0c;\u7406\u89e3\u4e3a\u4ec0\u4e48\u5b83\u6bd4\u539f\u751f Python \u5217\u8868\u66f4\u5feb\u3002<\/p>\n<h2>Bilibili \u540c\u6b65\u89c6\u9891<\/h2>\n<p>Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02&#xff1a;\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4&#xff0c;\u544a\u522b\u4f4e\u6548\u5faa\u73af<\/p>\n<h2>\u524d\u8a00<\/h2>\n<p>\u5199 Python \u505a\u6570\u503c\u8ba1\u7b97\u7684\u65f6\u5019&#xff0c;\u5f88\u591a\u5c0f\u4f19\u4f34\u7b2c\u4e00\u53cd\u5e94\u5c31\u662f\u7528\u539f\u751flist\u5217\u8868\u5b58\u6570\u636e\u3002\u4f46\u4e00\u65e6\u6570\u636e\u91cf\u53d8\u5927&#xff0c;\u5faa\u73af\u5199\u4e00\u5806\u52a0\u51cf\u4e58\u9664&#xff0c;\u7a0b\u5e8f\u77ac\u95f4\u5c31\u53d8\u5f97\u6162\u541e\u541e&#x1f422;\u3002\u8fd9\u65f6\u5019\u5c31\u8be5 NumPy \u767b\u573a\u4e86&#xff01;<\/p>\n<p>NumPy \u6838\u5fc3\u662fndarray \u591a\u7ef4\u6570\u7ec4\u5bf9\u8c61&#xff0c;\u5b83\u628a\u5927\u91cf\u6570\u636e\u5b58\u653e\u5728\u8fde\u7eed\u5185\u5b58\u7a7a\u95f4&#xff0c;\u5e95\u5c42\u7531 C \u8bed\u8a00\u5b9e\u73b0\u8fd0\u7b97&#xff0c;\u907f\u5f00 Python \u5faa\u73af\u7684\u6027\u80fd\u5f00\u9500\u3002\u5f88\u591a\u6570\u636e\u5206\u6790\u5e93 Pandas\u3001SciPy&#xff0c;\u5e95\u5c42\u90fd\u91cd\u5ea6\u4f9d\u8d56 NumPy\u3002\u4eca\u5929\u6211\u4eec\u4ece\u96f6\u4e0a\u624b&#xff0c;\u641e\u61c2 NumPy \u6700\u5e38\u7528\u7684\u6838\u5fc3\u64cd\u4f5c\u3002<\/p>\n<p>&#x1f4a1;\u5c0f\u63d0\u793a&#xff1a;NumPy \u6807\u51c6\u5bfc\u5165\u7ea6\u5b9a\u662fimport numpy as np&#xff0c;\u540e\u7eed\u4ee3\u7801\u793a\u4f8b\u5168\u90e8\u6cbf\u7528np\u8fd9\u4e2a\u522b\u540d\u3002<\/p>\n<h2>\u4e00\u3001\u521d\u8bc6 ndarray&#xff1a;\u6570\u7ec4 vs Python \u5217\u8868<\/h2>\n<p>\u9996\u5148\u6211\u4eec\u6765\u611f\u53d7 ndarray \u548c\u666e\u901a Python \u5217\u8868\u6700\u76f4\u89c2\u7684\u5dee\u522b\u3002<\/p>\n<p>\u666e\u901a Python \u5217\u8868\u505a\u4e58\u6cd5&#xff0c;\u53ea\u4f1a\u590d\u5236\u62fc\u63a5\u5217\u8868\u5143\u7d20&#xff0c;\u5e76\u4e0d\u4f1a\u5bf9\u5185\u90e8\u6bcf\u4e2a\u6570\u5b57\u505a\u8fd0\u7b97&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u539f\u751f\u5217\u8868<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token comment\"># \u8f93\u51fa&#xff1a;[1, 2, 3, 1, 2, 3, 1, 2, 3]<\/span><\/p>\n<p>\u800c NumPy \u6570\u7ec4\u5219\u662f\u5143\u7d20\u7ea7\u8fd0\u7b97&#xff0c;\u8fd0\u7b97\u7b26\u76f4\u63a5\u4f5c\u7528\u4e8e\u6570\u7ec4\u91cc\u9762\u7684\u6bcf\u4e00\u4e2a\u5143\u7d20&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> numpy <span class=\"token keyword\">as<\/span> np<br \/>\na <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span>array<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">*<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span>   <span class=\"token comment\"># \u6bcf\u4e2a\u5143\u7d20 \u00d73<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span>   <span class=\"token comment\"># \u6bcf\u4e2a\u5143\u7d20 &#043;2<\/span><\/p>\n<p>\u8f93\u51fa&#xff1a;<\/p>\n<p>[3 6 9]<br \/>\n[3 4 5]<\/p>\n<p>\u8fd9\u5c31\u662f NumPy \u5f88\u8ff7\u4eba\u7684\u4e00\u70b9&#xff1a;\u4e0d\u7528\u5199 for \u5faa\u73af&#xff0c;\u4e00\u884c\u641e\u5b9a\u6279\u91cf\u6570\u503c\u8fd0\u7b97\u3002<\/p>\n<p>\u518d\u8bd5\u8bd5\u6570\u7ec4\u4e0e\u6570\u7ec4\u4e4b\u95f4\u8fd0\u7b97&#xff1a;<\/p>\n<p>a <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span>array<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\nb <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span>array<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">&#043;<\/span> b<span class=\"token punctuation\">)<\/span>    <span class=\"token comment\"># \u5bf9\u5e94\u4f4d\u7f6e\u76f8\u52a0<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">*<\/span> b<span class=\"token punctuation\">)<\/span>    <span class=\"token comment\"># \u54c8\u8fbe\u739b\u79ef&#xff1a;\u5bf9\u5e94\u4f4d\u7f6e\u9010\u4e2a\u76f8\u4e58<\/span><br \/>\n<span class=\"token comment\"># print(a \/ b)  # \u4f1a\u62a5RuntimeWarning&#xff0c;\u9664\u4ee50\u5f97\u5230inf\u65e0\u7a77\u5927<\/span><\/p>\n<p>&#x1f4cc;\u77e5\u8bc6\u70b9&#xff1a;*\u4ee3\u8868\u54c8\u8fbe\u739b\u79ef&#xff08;\u9010\u5143\u7d20\u76f8\u4e58&#xff09;&#xff1b;\u5982\u679c\u8981\u505a\u5411\u91cf\u5185\u79ef&#xff08;\u70b9\u79ef&#xff09;&#xff0c;\u9700\u8981\u7528np.dot()<\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">.<\/span>dot<span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">,<\/span> b<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># 1*2 &#043; 2*2 &#043;3*0 &#061; 6<\/span><\/p>\n<h2>\u4e8c\u3001\u82b1\u5f0f\u521b\u5efa\u5404\u7c7b\u6570\u7ec4&#x1f4e6;<\/h2>\n<p>\u9664\u4e86\u624b\u52a8\u5199np.array([&#8230;])&#xff0c;NumPy \u63d0\u4f9b\u5f88\u591a\u5de5\u5177\u51fd\u6570\u5feb\u901f\u751f\u6210\u5e8f\u5217\u6570\u7ec4\u3002<\/p>\n<h3>1. arange&#xff1a;\u751f\u6210\u7b49\u5dee\u5e8f\u5217&#xff08;\u7ec8\u70b9\u4e0d\u5305\u542b&#xff09;<\/h3>\n<p>\u8bed\u6cd5&#xff1a;np.arange(\u8d77\u70b9,\u7ec8\u70b9,\u6b65\u957f)<\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">.<\/span>arange<span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>         <span class=\"token comment\"># 0~9<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">.<\/span>arange<span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>   <span class=\"token comment\"># 0,2,4,6,8&#xff0c;\u7ec8\u70b910\u4e0d\u4f1a\u5305\u542b\u8fdb\u6765<\/span><\/p>\n<p>\u26a0\ufe0f\u6ce8\u610f&#xff1a;arange\u7684\u7ec8\u6b62\u503c\u662f\u5f00\u533a\u95f4&#xff0c;\u4e0d\u4f1a\u88ab\u7eb3\u5165\u6570\u7ec4\u3002<\/p>\n<h3>2. linspace&#xff1a;\u5747\u5206\u6307\u5b9a\u533a\u95f4&#xff08;\u7ec8\u70b9\u5305\u542b&#xff09;<\/h3>\n<p>\u5982\u679c\u4f60\u5e0c\u671b\u628a\u4e00\u6bb5\u533a\u95f4\u5e73\u5747\u5207\u5206\u6210 N \u4efd&#xff0c;\u5e76\u4e14\u5305\u542b\u9996\u5c3e\u4e24\u4e2a\u7aef\u70b9&#xff0c;\u5c31\u7528linspace\u3002<\/p>\n<p><span class=\"token comment\"># \u5c060~10&#xff0c;\u5207\u5206\u621015\u4e2a\u70b9<\/span><br \/>\narr <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span>linspace<span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">15<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span><\/p>\n<h3>3. \u591a\u7ef4\u6570\u7ec4 &amp; shape \u67e5\u770b\u5f62\u72b6<\/h3>\n<p>\u7528\u5d4c\u5957\u5217\u8868\u5c31\u53ef\u4ee5\u521b\u5efa\u4e8c\u7ef4\u3001\u4e09\u7ef4\u751a\u81f3\u66f4\u9ad8\u7ef4\u6570\u7ec4\u3002<\/p>\n<p><span class=\"token comment\"># \u4e8c\u7ef4\u6570\u7ec4&#xff0c;2\u884c3\u5217\u77e9\u9635<\/span><br \/>\nc <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span>array<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n              <span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">6<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>c<span class=\"token punctuation\">.<\/span>shape<span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># \u8fd4\u56de\u5143\u7ec4 (2,3)&#xff0c;\u4ee3\u88682\u884c&#xff0c;3\u5217<\/span><\/p>\n<p>\u4e09\u7ef4\u6570\u7ec4\u793a\u4f8b&#xff1a;<\/p>\n<p>d <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span>array<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">7<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">9<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">11<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">12<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n              <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">14<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">15<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">16<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">17<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">18<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">19<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">20<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">21<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">22<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">23<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">24<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>d<span class=\"token punctuation\">.<\/span>shape<span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># (2,4,3)<\/span><\/p>\n<p>\u53ef\u4ee5\u628a\u8fd9\u4e2a\u4e09\u7ef4\u6570\u7ec4\u7b80\u5355\u7406\u89e3\u4e3a&#xff1a;2 \u4e2a4\u00d73\u7684\u4e8c\u7ef4\u77e9\u9635\u5806\u53e0\u5728\u4e00\u8d77\u3002<\/p>\n<h3>4. reshape \u6539\u53d8\u5f62\u72b6\u3001\u77e9\u9635\u8f6c\u7f6e<\/h3>\n<p>\u6570\u7ec4\u603b\u5143\u7d20\u6570\u91cf\u4e0d\u53d8\u7684\u524d\u63d0\u4e0b&#xff0c;\u53ef\u4ee5\u81ea\u7531\u91cd\u5851\u7ef4\u5ea6&#xff1a;<\/p>\n<p>c <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span>array<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">6<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>c<span class=\"token punctuation\">.<\/span>reshape<span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u6539\u62103\u884c2\u5217<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>c<span class=\"token punctuation\">.<\/span>reshape<span class=\"token punctuation\">(<\/span><span class=\"token number\">6<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u6539\u62106\u884c1\u5217<\/span><\/p>\n<p>\u77e9\u9635\u8f6c\u7f6e\u4e24\u79cd\u5199\u6cd5&#xff0c;\u6548\u679c\u5b8c\u5168\u7b49\u4ef7&#xff1a;<\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>c<span class=\"token punctuation\">.<\/span>T<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">.<\/span>transpose<span class=\"token punctuation\">(<\/span>c<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<h3>5. \u751f\u6210\u968f\u673a\u6570\u6570\u7ec4&#x1f3b2;<\/h3>\n<p>np.random\u6a21\u5757\u7528\u6765\u751f\u6210\u968f\u673a\u6570\u7ec4&#xff1a;<\/p>\n<ul>\n<li>\n<p>randn()&#xff1a;\u670d\u4ece\u6807\u51c6\u6b63\u6001\u5206\u5e03\u968f\u673a\u6570&#xff08;\u5747\u503c 0&#xff0c;\u65b9\u5dee 1&#xff09;<\/p>\n<\/li>\n<li>\n<p>rand()&#xff1a;\u751f\u6210 0~1 \u4e4b\u95f4\u5747\u5300\u5206\u5e03\u968f\u673a\u6570<\/p>\n<\/li>\n<li>\n<p>\u4f20\u5165\u5f62\u72b6\u53c2\u6570&#xff0c;\u53ef\u4ee5\u76f4\u63a5\u751f\u6210\u591a\u7ef4\u968f\u673a\u6570\u7ec4<\/p>\n<\/li>\n<\/ul>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">.<\/span>random<span class=\"token punctuation\">.<\/span>randn<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>        <span class=\"token comment\"># \u5355\u4e2a\u6b63\u6001\u968f\u673a\u6570<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">.<\/span>random<span class=\"token punctuation\">.<\/span>rand<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>         <span class=\"token comment\"># \u5355\u4e2a0\u20111\u968f\u673a\u5c0f\u6570<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>np<span class=\"token punctuation\">.<\/span>random<span class=\"token punctuation\">.<\/span>randn<span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>     <span class=\"token comment\"># 2\u884c3\u5217\u6b63\u6001\u968f\u673a\u6570\u7ec4<\/span><\/p>\n<h2>\u4e09\u3001\u7d22\u5f15\u4e0e\u5207\u7247&#xff1a;\u63d0\u53d6\u60f3\u8981\u7684\u6570\u636e\u2702\ufe0f<\/h2>\n<h3>\u4e00\u7ef4\u6570\u7ec4\u7d22\u5f15\u5207\u7247<\/h3>\n<p>\u548c Python \u5217\u8868\u7c7b\u4f3c&#xff0c;\u7d22\u5f15\u4ece 0 \u5f00\u59cb&#xff1b;\u5207\u7247\u8bed\u6cd5[start:end:step]&#xff0c;end \u4f4d\u7f6e\u4e0d\u5305\u542b\u3002<\/p>\n<p>a <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span>array<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>   <span class=\"token comment\"># \u83b7\u53d6\u7b2c\u4e00\u4e2a\u5143\u7d20<\/span><br \/>\na<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">99<\/span>     <span class=\"token comment\"># \u4fee\u6539\u6307\u5b9a\u7d22\u5f15\u4f4d\u7f6e\u7684\u503c<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">)<\/span><\/p>\n<p>d <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span>array<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">7<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>d<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">:<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>    <span class=\"token comment\"># \u53d6\u4e0b\u68071~4<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>d<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">:<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>d<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">:<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">:<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u4ece0\u52304&#xff0c;\u6b65\u957f2\u53d6\u503c<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>d<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">:<\/span><span class=\"token punctuation\">:<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>   <span class=\"token comment\"># &#x1f525;\u8d85\u5b9e\u7528&#xff01;\u6570\u7ec4\u9006\u5e8f\u7ffb\u8f6c<\/span><\/p>\n<p>\u2728\u8bb0\u4f4f [::-1]&#xff0c;\u4e00\u884c\u5b9e\u73b0\u6570\u7ec4\u53cd\u8f6c&#xff0c;\u5199\u4ee3\u7801\u9ad8\u9891\u7528\u5230\u3002<\/p>\n<h3>\u4e8c\u7ef4\u6570\u7ec4\u7d22\u5f15<\/h3>\n<p>\u4e8c\u7ef4\u6570\u7ec4\u7d22\u5f15\u683c\u5f0f&#xff1a;[\u884c\u7d22\u5f15,\u5217\u7d22\u5f15]&#xff0c;\u9017\u53f7\u9694\u5f00\u884c\u5217\u4f4d\u7f6e\u3002<\/p>\n<p>c <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span>array<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">6<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>c<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># \u7b2c0\u884c\u7b2c0\u5217<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>c<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># \u7b2c0\u884c\u7b2c2\u5217<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>c<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># \u7b2c1\u884c\u7b2c2\u5217<\/span><\/p>\n<h2>\u56db\u3001\u5e7f\u64ad (Broadcast)&#xff1a;NumPy \u7684\u9ed1\u9b54\u6cd5\u26a1<\/h2>\n<p>\u5e7f\u64ad\u662f NumPy \u6700\u5f3a\u5927\u7684\u7279\u6027\u4e4b\u4e00&#xff1a;\u4e0d\u540c\u5f62\u72b6\u6570\u7ec4\u8fd0\u7b97\u65f6&#xff0c;NumPy \u4f1a\u81ea\u52a8\u505a\u7ef4\u5ea6\u6269\u5c55\u5bf9\u9f50&#xff0c;\u4e0d\u9700\u8981\u624b\u52a8\u590d\u5236\u6570\u636e&#xff0c;\u7701\u53bb\u5927\u91cf for \u5faa\u73af\u3002<\/p>\n<p>\u4e3e\u4e2a\u76f4\u89c2\u4f8b\u5b50&#xff1a;\u4e00\u7ef4\u6570\u7ec4a &#061; [1,2,3]&#xff0c;\u548c 2 \u884c 3 \u5217\u4e8c\u7ef4\u6570\u7ec4c\u76f8\u52a0\u3002<\/p>\n<p>a <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span>array<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\nc <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span>array<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n             <span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">6<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>res <span class=\"token operator\">&#061;<\/span> a <span class=\"token operator\">&#043;<\/span> c<br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>res<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8f93\u51fa&#xff1a;<\/p>\n<p>[[2 4 6]<br \/>\n [5 7 9]]<\/p>\n<p>\u903b\u8f91&#xff1a;\u4e00\u7ef4\u6570\u7ec4a\u81ea\u52a8\u5728\u884c\u65b9\u5411\u590d\u5236\u4e00\u4efd&#xff0c;\u53d8\u6210\u548cc\u76f8\u540c\u7684 2 \u884c 3 \u5217&#xff0c;\u518d\u9010\u5143\u7d20\u76f8\u52a0\u3002 \u540c\u6837\u4e58\u6cd5\u4e5f\u652f\u6301\u5e7f\u64ad&#xff1a;<\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">*<\/span> c<span class=\"token punctuation\">)<\/span><\/p>\n<p>&#x1f4a1;\u5e7f\u64ad\u4e0d\u4f1a\u771f\u5b9e\u590d\u5236\u5185\u5b58\u6570\u636e&#xff0c;\u53ea\u662f\u903b\u8f91\u5c42\u9762\u6269\u5c55&#xff0c;\u5185\u5b58\u5f00\u9500\u5f88\u5c0f&#xff0c;\u6548\u7387\u5f88\u9ad8\u3002<\/p>\n<h2>\u4e94\u3001\u6027\u80fd\u78be\u538b&#xff1a;\u4e3a\u4ec0\u4e48 NumPy \u6bd4\u539f\u751f Python \u5feb&#xff1f;&#x1f680;<\/h2>\n<p>\u5f88\u591a\u540c\u5b66\u53ea\u77e5\u9053 NumPy \u5feb&#xff0c;\u4f46\u7f3a\u5c11\u76f4\u89c2\u611f\u53d7\u3002 \u539f\u56e0\u5728\u4e8e&#xff1a;<\/p>\n<li>\n<p>ndarray \u6570\u636e\u5b58\u50a8\u5728\u8fde\u7eed\u5185\u5b58\u5757&#xff1b;<\/p>\n<\/li>\n<li>\n<p>\u6838\u5fc3\u8fd0\u7b97\u903b\u8f91\u7531 C \u5b9e\u73b0&#xff0c;\u907f\u5f00 Python \u5faa\u73af\u89e3\u91ca\u5f00\u9500&#xff1b;<\/p>\n<\/li>\n<li>\n<p>\u5e7f\u64ad\u3001\u5411\u91cf\u5316\u8fd0\u7b97\u4ee3\u66ff\u624b\u5199 for \u5faa\u73af\u3002<\/p>\n<\/li>\n<p>\u6211\u4eec\u5199\u4e00\u6bb5\u6d4b\u8bd5\u4ee3\u7801&#xff0c;\u5bf9\u6bd4np.sum()\u548c Python \u5185\u7f6esum()\u8ba1\u7b97\u5927\u6570\u636e&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> time<br \/>\n<span class=\"token keyword\">import<\/span> numpy <span class=\"token keyword\">as<\/span> np<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">calculate_time<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token comment\"># \u5341\u4e07\u4e2a\u968f\u673a\u6570<\/span><br \/>\n    a <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span>random<span class=\"token punctuation\">.<\/span>randn<span class=\"token punctuation\">(<\/span><span class=\"token number\">100000<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    b <span class=\"token operator\">&#061;<\/span> <span class=\"token builtin\">list<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">)<\/span><\/p>\n<p>    start_time <span class=\"token operator\">&#061;<\/span> time<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> _ <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        s1 <span class=\"token operator\">&#061;<\/span> np<span class=\"token punctuation\">.<\/span><span class=\"token builtin\">sum<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;NumPy\u6c42\u548c\u8017\u65f6&#xff1a;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>time<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&#8211;<\/span>start_time<span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.6f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> sec&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    start_time <span class=\"token operator\">&#061;<\/span> time<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> _ <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        s2 <span class=\"token operator\">&#061;<\/span> <span class=\"token builtin\">sum<\/span><span class=\"token punctuation\">(<\/span>b<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u539f\u751flist sum\u8017\u65f6&#xff1a;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>time<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&#8211;<\/span>start_time<span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.6f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> sec&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>calculate_time<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8f93\u51fa\u793a\u4f8b&#xff1a;<\/p>\n<p>NumPy\u6c42\u548c\u8017\u65f6&#xff1a;0.064xxx sec<br \/>\n\u539f\u751flist sum\u8017\u65f6&#xff1a;0.095xxx sec<\/p>\n<p>\u5341\u4e07\u89c4\u6a21\u5df2\u7ecf\u62c9\u5f00\u5dee\u8ddd&#xff0c;\u5982\u679c\u6570\u636e\u91cf\u4e0a\u5347\u5230\u5343\u4e07\u7ea7\u522b&#xff0c;\u5dee\u8ddd\u4f1a\u53d8\u5f97\u6781\u5176\u6050\u6016\u3002\u5728 IPython \u4e2d\u53ef\u4ee5\u7528\u9b54\u6cd5\u547d\u4ee4%timeit\u505a\u7cbe\u51c6\u6d4b\u901f&#xff1a;<\/p>\n<p>a &#061; np.random.randn(10000000)<br \/>\n%timeit np.sum(a)<br \/>\n%timeit sum(a)<\/p>\n<p>\u5343\u4e07\u7ea7\u6570\u7ec4\u6d4b\u8bd5\u53ef\u4ee5\u770b\u5230&#xff0c;np.sum\u6beb\u79d2\u7ea7\u522b\u5b8c\u6210&#xff0c;\u539f\u751f sum \u8981\u8017\u8d39 1 \u79d2\u4ee5\u4e0a\u3002<\/p>\n<p>\u2728\u5f00\u53d1\u7ecf\u9a8c&#xff1a;\u5c3d\u91cf\u907f\u514d for \u5faa\u73af\u904d\u5386\u6570\u7ec4&#xff0c;\u4f18\u5148\u7528 NumPy \u5411\u91cf\u5316\u3001\u5e7f\u64ad\u5199\u6cd5&#xff0c;\u8fd9\u662f\u5199\u51fa\u9ad8\u6027\u80fd\u6570\u503c\u4ee3\u7801\u7684\u5173\u952e\u3002<\/p>\n<h2>\u5c0f\u7ed3&#x1f4dd;<\/h2>\n<li>\n<p>NumPy \u6838\u5fc3\u662fndarray\u591a\u7ef4\u6570\u7ec4&#xff0c;\u652f\u6301\u9010\u5143\u7d20\u8fd0\u7b97&#xff0c;\u548c Python list \u884c\u4e3a\u5dee\u5f02\u5f88\u5927&#xff1b;<\/p>\n<\/li>\n<li>\n<p>\u53ef\u4ee5\u7528array\u3001arange\u3001linspace\u521b\u5efa\u6570\u7ec4&#xff0c;.shape\u67e5\u770b\u7ef4\u5ea6&#xff0c;reshape\u3001.T\u8c03\u6574\u5f62\u6001&#xff1b;<\/p>\n<\/li>\n<li>\n<p>\u7d22\u5f15\u5207\u7247[start:end:step]&#xff0c;[::-1]\u5b9e\u73b0\u6570\u7ec4\u7ffb\u8f6c&#xff1b;\u4e8c\u7ef4\u6570\u7ec4\u7528[\u884c,\u5217]\u53d6\u503c&#xff1b;<\/p>\n<\/li>\n<li>\n<p>\u5e7f\u64ad\u673a\u5236\u81ea\u52a8\u5bf9\u9f50\u6570\u7ec4\u7ef4\u5ea6&#xff0c;\u6d88\u9664\u5faa\u73af&#xff0c;\u7b80\u6d01\u53c8\u9ad8\u6548&#xff1b;<\/p>\n<\/li>\n<li>\n<p>\u5e95\u5c42 C \u5b9e\u73b0 &#043; \u8fde\u7eed\u5185\u5b58&#xff0c;NumPy \u5411\u91cf\u5316\u8fd0\u7b97\u6027\u80fd\u8fdc\u8d85 Python \u539f\u751f\u5faa\u73af\u3002<\/p>\n<\/li>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261011202510-6acbf0a6e780f.png\" alt=\"Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02\uff1a\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4\uff0c\u544a\u522b\u4f4e\u6548\u5faa\u73af\" \/><\/p>\n<p>NumPy \u662f\u79d1\u5b66\u8ba1\u7b97\u7684\u5730\u57fa&#xff0c;\u719f\u7ec3\u638c\u63e1\u6570\u7ec4\u3001\u5e7f\u64ad\u3001\u5411\u91cf\u5316&#xff0c;\u540e\u9762\u5b66\u4e60 Pandas\u3001\u673a\u5668\u5b66\u4e60\u5e93\u65f6\u5c31\u4f1a\u4e8b\u534a\u529f\u500d\u3002\u8d76\u5feb\u6253\u5f00 IPython&#xff0c;\u52a8\u624b\u6572\u4e00\u904d\u4e0a\u9762\u7684\u793a\u4f8b\u4ee3\u7801\u5427&#xff01;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02&#xff1a;\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4&#xff0c;\u544a\u522b\u4f4e\u6548\u5faa\u73afBilibili \u540c\u6b65\u89c6\u9891\u524d\u8a00\u4e00\u3001\u521d\u8bc6 ndarray&#xff1a;\u6570\u7ec4 vs Python \u5217\u8868\u4e8c\u3001\u82b1\u5f0f\u521b\u5efa\u5404\u7c7b\u6570\u7ec4&#x1f4e6;1. arange&#xff1a;\u751f\u6210\u7b49\u5dee\u5e8f\u5217&#xff08;\u7ec8\u70b9\u4e0d\u5305\u542b&#xff09;2. linspace&#xff1a;\u5747\u5206\u6307\u5b9a\u533a\u95f4&#xff08;\u7ec8\u70b9\u5305\u542b&#xff09;3. \u591a\u7ef4\u6570\u7ec4 &amp; shape \u67e5\u770b\u5f62\u72b64. reshape \u6539\u53d8\u5f62\u72b6\u3001\u77e9\u9635\u8f6c<\/p>\n","protected":false},"author":2,"featured_media":115414,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[11820,1818,81,190,125,44],"topic":[],"class_list":["post-115415","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-atomgit","tag-numpy","tag-python","tag-190","tag-125","tag-44"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02\uff1a\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4\uff0c\u544a\u522b\u4f4e\u6548\u5faa\u73af - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/115415.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02\uff1a\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4\uff0c\u544a\u522b\u4f4e\u6548\u5faa\u73af - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02&#xff1a;\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4&#xff0c;\u544a\u522b\u4f4e\u6548\u5faa\u73afBilibili \u540c\u6b65\u89c6\u9891\u524d\u8a00\u4e00\u3001\u521d\u8bc6 ndarray&#xff1a;\u6570\u7ec4 vs Python \u5217\u8868\u4e8c\u3001\u82b1\u5f0f\u521b\u5efa\u5404\u7c7b\u6570\u7ec4&#x1f4e6;1. arange&#xff1a;\u751f\u6210\u7b49\u5dee\u5e8f\u5217&#xff08;\u7ec8\u70b9\u4e0d\u5305\u542b&#xff09;2. linspace&#xff1a;\u5747\u5206\u6307\u5b9a\u533a\u95f4&#xff08;\u7ec8\u70b9\u5305\u542b&#xff09;3. \u591a\u7ef4\u6570\u7ec4 &amp; shape \u67e5\u770b\u5f62\u72b64. reshape \u6539\u53d8\u5f62\u72b6\u3001\u77e9\u9635\u8f6c\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/115415.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-11T20:25:13+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261011202510-6acbf0a6e780f.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/115415.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/115415.html\",\"name\":\"Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02\uff1a\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4\uff0c\u544a\u522b\u4f4e\u6548\u5faa\u73af - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-10-11T20:25:13+00:00\",\"dateModified\":\"2026-10-11T20:25:13+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/115415.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/115415.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/115415.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02\uff1a\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4\uff0c\u544a\u522b\u4f4e\u6548\u5faa\u73af\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02\uff1a\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4\uff0c\u544a\u522b\u4f4e\u6548\u5faa\u73af - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/115415.html","og_locale":"zh_CN","og_type":"article","og_title":"Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02\uff1a\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4\uff0c\u544a\u522b\u4f4e\u6548\u5faa\u73af - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02&#xff1a;\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4&#xff0c;\u544a\u522b\u4f4e\u6548\u5faa\u73afBilibili \u540c\u6b65\u89c6\u9891\u524d\u8a00\u4e00\u3001\u521d\u8bc6 ndarray&#xff1a;\u6570\u7ec4 vs Python \u5217\u8868\u4e8c\u3001\u82b1\u5f0f\u521b\u5efa\u5404\u7c7b\u6570\u7ec4&#x1f4e6;1. arange&#xff1a;\u751f\u6210\u7b49\u5dee\u5e8f\u5217&#xff08;\u7ec8\u70b9\u4e0d\u5305\u542b&#xff09;2. linspace&#xff1a;\u5747\u5206\u6307\u5b9a\u533a\u95f4&#xff08;\u7ec8\u70b9\u5305\u542b&#xff09;3. \u591a\u7ef4\u6570\u7ec4 &amp; shape \u67e5\u770b\u5f62\u72b64. reshape \u6539\u53d8\u5f62\u72b6\u3001\u77e9\u9635\u8f6c","og_url":"https:\/\/www.wsisp.com\/helps\/115415.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-10-11T20:25:13+00:00","og_image":[{"url":"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261011202510-6acbf0a6e780f.png"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"3 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/115415.html","url":"https:\/\/www.wsisp.com\/helps\/115415.html","name":"Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02\uff1a\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4\uff0c\u544a\u522b\u4f4e\u6548\u5faa\u73af - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-10-11T20:25:13+00:00","dateModified":"2026-10-11T20:25:13+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/115415.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/115415.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/115415.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"Numpy\u6570\u636e\u5904\u7406\u8be6\u89e3 02\uff1a\u73a9\u8f6c\u9ad8\u6027\u80fd\u6570\u7ec4\uff0c\u544a\u522b\u4f4e\u6548\u5faa\u73af"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/115415","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=115415"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/115415\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media\/115414"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=115415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=115415"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=115415"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=115415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}