{"id":631,"date":"2023-04-22T19:25:57","date_gmt":"2023-02-10T04:52:39","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/numpy-%e7%9f%a9%e9%98%b5%e4%b9%98%e6%b3%95\/"},"modified":"2025-08-02T23:52:42","modified_gmt":"2025-08-02T15:52:42","slug":"numpy-%e7%9f%a9%e9%98%b5%e4%b9%98%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/numpy-%e7%9f%a9%e9%98%b5%e4%b9%98%e6%b3%95\/","title":{"rendered":"NumPy\u77e9\u9635\u4e58\u6cd5\u5b8c\u5168\u6307\u5357\uff1aPython\u4e2d\u9ad8\u6548\u5904\u7406\u77e9\u9635\u8fd0\u7b97\u7684\u8be6\u7ec6\u6559\u7a0b"},"content":{"rendered":"<p>NumPy\u77e9\u9635\u4e58\u6cd5\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e09\u79cd\u65b9\u6cd5\u8fdb\u884c\u3002<\/p>\n<ol>\n<li>multiply()\uff1a\u9010\u5143\u7d20\u77e9\u9635\u76f8\u4e58<\/li>\n<li>matmul()\uff1a\u4e24\u4e2a\u6570\u7ec4\u7684\u77e9\u9635\u4e58\u79ef<\/li>\n<li>dot()\uff1a\u4e24\u4e2a\u6570\u7ec4\u7684\u70b9\u79ef<\/li>\n<\/ol>\n<h2>1. NumPy \u77e9\u9635\u9010\u5143\u7d20\u76f8\u4e58<\/h2>\n<p>\u5982\u679c\u4f60\u60f3\u8fdb\u884c\u9010\u5143\u7d20\u77e9\u9635\u4e58\u6cd5\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528multiply()\u51fd\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code>import numpy as np\r\n\r\narr1 = np.array([[1, 2],\r\n                 [3, 4]])\r\narr2 = np.array([[5, 6],\r\n                 [7, 8]])\r\n\r\narr_result = np.multiply(arr1, arr2)\r\n\r\nprint(arr_result)\r\n<\/code><\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre class=\"post-pre\"><code>[[ 5 12]\r\n [21 32]]\r\n<\/code><\/pre>\n<p>\u4e0b\u9762\u7684\u56fe\u7247\u663e\u793a\u4e86\u6267\u884c\u4e58\u6cd5\u8fd0\u7b97\u4ee5\u5f97\u5230\u7ed3\u679c\u77e9\u9635\u3002<\/p>\n<div><img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65647a66a4b2f92e6c72ba42\/8-0.png\" class='post-images' alt=\"NumPy\u77e9\u9635\u4e58\u6cd5\" title=\"NumPy\u77e9\u9635\u9010\u5143\u7d20\u76f8\u4e58\u793a\u4f8b\"><\/div>\n<h2>2. \u4e24\u4e2aNumPy\u6570\u7ec4\u7684\u77e9\u9635\u4e58\u79ef<\/h2>\n<p>\u5982\u679c\u4f60\u60f3\u8981\u4e24\u4e2a\u6570\u7ec4\u7684\u77e9\u9635\u4e58\u79ef\uff0c\u8bf7\u4f7f\u7528matmul()\u51fd\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code>import numpy as np\r\n\r\narr1 = np.array([[1, 2],\r\n                 [3, 4]])\r\narr2 = np.array([[5, 6],\r\n                 [7, 8]])\r\n\r\narr_result = np.matmul(arr1, arr2)\r\n\r\nprint(f'arr1\u548carr2\u7684\u77e9\u9635\u4e58\u79ef\u662f:\\n{arr_result}')\r\n\r\narr_result = np.matmul(arr2, arr1)\r\n\r\nprint(f'arr2\u548carr1\u7684\u77e9\u9635\u4e58\u79ef\u662f:\\n{arr_result}')\r\n<\/code><\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code>arr1\u548carr2\u7684\u77e9\u9635\u4e58\u79ef\u662f:\r\n[[19 22]\r\n [43 50]]\r\narr2\u548carr1\u7684\u77e9\u9635\u4e58\u79ef\u662f:\r\n[[23 34]\r\n [31 46]]\r\n<\/code><\/pre>\n<p>\u4e0b\u56fe\u89e3\u91ca\u4e86\u7ed3\u679c\u6570\u7ec4\u4e2d\u6bcf\u4e2a\u7d22\u5f15\u7684\u77e9\u9635\u4e58\u6cd5\u64cd\u4f5c\u3002\u4e3a\u7b80\u5355\u8d77\u89c1\uff0c\u53d6\u7b2c\u4e00\u4e2a\u6570\u7ec4\u7684\u884c\u548c\u7b2c\u4e8c\u4e2a\u6570\u7ec4\u7684\u5217\uff0c\u7136\u540e\u5c06\u5bf9\u5e94\u7684\u5143\u7d20\u76f8\u4e58\u5e76\u76f8\u52a0\uff0c\u5f97\u51fa\u77e9\u9635\u4e58\u79ef\u7684\u503c\u3002<\/p>\n<div><img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65647a66a4b2f92e6c72ba42\/15-0.png\" class='post-images' alt=\"NumPy\u77e9\u9635\u4e58\u79ef\" title=\"NumPy\u77e9\u9635\u4e58\u79ef\u793a\u4f8b\"><\/div>\n<p>\u4e24\u4e2a\u6570\u7ec4\u7684\u77e9\u9635\u4e58\u79ef\u53d6\u51b3\u4e8e\u53c2\u6570\u7684\u4f4d\u7f6e\u3002\u56e0\u6b64\uff0cmatmul(A, B)\u53ef\u80fd\u4e0ematmul(B, A)\u4e0d\u540c\u3002<\/p>\n<h2>3. \u4e24\u4e2aNumPy\u6570\u7ec4\u7684\u70b9\u79ef<\/h2>\n<p>numpy\u7684dot()\u51fd\u6570\u8fd4\u56de\u4e24\u4e2a\u6570\u7ec4\u7684\u70b9\u4e58\u7ed3\u679c\u3002\u5bf9\u4e8e\u4e00\u7ef4\u548c\u4e8c\u7ef4\u6570\u7ec4\uff0c\u8be5\u7ed3\u679c\u4e0ematmul()\u51fd\u6570\u76f8\u540c\u3002<\/p>\n<pre class=\"post-pre\"><code>import numpy as np\r\n\r\narr1 = np.array([[1, 2],\r\n                 [3, 4]])\r\narr2 = np.array([[5, 6],\r\n                 [7, 8]])\r\n\r\narr_result = np.dot(arr1, arr2)\r\n\r\nprint(f'arr1\u548carr2\u7684\u70b9\u79ef\u662f:\\n{arr_result}')\r\n\r\narr_result = np.dot(arr2, arr1)\r\n\r\nprint(f'arr2\u548carr1\u7684\u70b9\u79ef\u662f:\\n{arr_result}')\r\n\r\narr_result = np.dot([1, 2], [5, 6])\r\nprint(f'\u4e24\u4e2a\u4e00\u7ef4\u6570\u7ec4\u7684\u70b9\u79ef\u662f:\\n{arr_result}')\r\n<\/code><\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code>arr1\u548carr2\u7684\u70b9\u79ef\u662f:\r\n[[19 22]\r\n [43 50]]\r\narr2\u548carr1\u7684\u70b9\u79ef\u662f:\r\n[[23 34]\r\n [31 46]]\r\n\u4e24\u4e2a\u4e00\u7ef4\u6570\u7ec4\u7684\u70b9\u79ef\u662f:\r\n17\r\n<\/code><\/pre>\n<p>\u63a8\u8350\u9605\u8bfb\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>numpy.square() &#8211; \u8ba1\u7b97\u6570\u7ec4\u5143\u7d20\u7684\u5e73\u65b9<\/li>\n<li>NumPy sqrt() \u2013 \u77e9\u9635\u5143\u7d20\u7684\u5e73\u65b9\u6839<\/li>\n<li>Python NumPy\u6559\u7a0b<\/li>\n<\/ul>\n<h2>\u53c2\u8003\u6587\u732e<\/h2>\n<ul class=\"post-ul\">\n<li>numpy matmul() &#8211; \u77e9\u9635\u4e58\u6cd5\u51fd\u6570<\/li>\n<li>numpy multiply() &#8211; \u9010\u5143\u7d20\u4e58\u6cd5\u51fd\u6570<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>NumPy\u77e9\u9635\u4e58\u6cd5\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e09\u79cd\u65b9\u6cd5\u8fdb\u884c\u3002 multiply()\uff1a\u9010\u5143\u7d20\u77e9\u9635\u76f8\u4e58 matmul()\uff1a\u4e24\u4e2a\u6570\u7ec4 [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1774,1508,1773,811,1146],"class_list":["post-631","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-numpy-dot","tag-numpy","tag-python","tag-811","tag-1146"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>NumPy\u77e9\u9635\u4e58\u6cd5\u5b8c\u5168\u6307\u5357\uff1aPython\u4e2d\u9ad8\u6548\u5904\u7406\u77e9\u9635\u8fd0\u7b97\u7684\u8be6\u7ec6\u6559\u7a0b - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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