{"id":2200,"date":"2023-07-23T07:07:00","date_gmt":"2023-07-23T07:07:00","guid":{"rendered":"https:\/\/statorials.org\/cn\/%e6%95%b0%e5%ad%97%e5%8d%a1\/"},"modified":"2023-07-23T07:07:00","modified_gmt":"2023-07-23T07:07:00","slug":"%e6%95%b0%e5%ad%97%e5%8d%a1","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/%e6%95%b0%e5%ad%97%e5%8d%a1\/","title":{"rendered":"\u5982\u4f55\u5c06\u51fd\u6570\u6620\u5c04\u5230 numpy \u6570\u7ec4\uff08\u5e26\u6709\u793a\u4f8b\uff09"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u57fa\u672c\u8bed\u6cd5\u5c06\u51fd\u6570\u6620\u5c04\u5230 NumPy \u6570\u7ec4\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #ff0000;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#define function\n<\/span>my_function = <span style=\"color: #008000;\">lambda<\/span> x: x*5\n\n<span style=\"color: #008080;\">#map function to every element in NumPy array\n<\/span>my_function(my_array)<\/span>\n<\/span><\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u5728\u5b9e\u8df5\u4e2d\u4f7f\u7528\u6b64\u8bed\u6cd5\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u793a\u4f8b 1\uff1a\u5c06\u51fd\u6570\u6620\u5c04\u5230\u4e00\u7ef4 NumPy \u6570\u7ec4<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u6f14\u793a\u5982\u4f55\u5c06\u51fd\u6570\u6620\u5c04\u5230 NumPy \u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u5c06\u6bcf\u4e2a\u503c\u4e58\u4ee5 2\uff0c\u7136\u540e\u52a0 5\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n\n<span style=\"color: #008080;\">#create NumPy array\n<span style=\"color: #000000;\">data = np. <span style=\"color: #3366ff;\">array<\/span> ([1, 3, 4, 4, 7, 8, 13, 15])\n\n<span style=\"color: #008080;\">#define function\n<\/span>my_function = <span style=\"color: #008000;\">lambda<\/span> x: x*2+5\n\n<span style=\"color: #008080;\">#apply function to NumPy array\n<\/span>my_function(data)\n\narray([ 7, 11, 13, 13, 19, 21, 31, 35])\n<\/span><\/span><\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u662f\u65b0\u8868\u4e2d\u6bcf\u4e2a\u503c\u7684\u8ba1\u7b97\u65b9\u5f0f\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">\u7b2c\u4e00\u4e2a\u503c\uff1a1*2+5 = <strong>7<\/strong><\/span><\/li>\n<li><span style=\"color: #000000;\">\u7b2c\u4e8c\u4e2a\u503c\uff1a3*2+5 = <strong>11<\/strong><\/span><\/li>\n<li><span style=\"color: #000000;\">\u7b2c\u4e09\u4e2a\u503c\uff1a4*2+5 = <strong>13<\/strong><\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u7b49\u7b49\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u793a\u4f8b 2\uff1a\u5c06\u51fd\u6570\u6620\u5c04\u5230\u591a\u7ef4 NumPy \u6570\u7ec4<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u6f14\u793a\u5982\u4f55\u5c06\u51fd\u6570\u6620\u5c04\u5230\u591a\u7ef4 NumPy \u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u5c06\u6bcf\u4e2a\u503c\u4e58\u4ee5 2\uff0c\u7136\u540e\u52a0 5\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n\n<span style=\"color: #008080;\">#create NumPy array\n<span style=\"color: #000000;\">data = np. <span style=\"color: #3366ff;\">array<\/span> ([[1, 2, 3, 4], [5, 6, 7, 8]])\n\n<span style=\"color: #008080;\">#view NumPy array\n<\/span><span style=\"color: #008000;\">print<\/span> (data)\n\n[[1 2 3 4]\n [5 6 7 8]]\n\n<span style=\"color: #008080;\">#define function\n<\/span>my_function = <span style=\"color: #008000;\">lambda<\/span> x: x*2+5\n\n<span style=\"color: #008080;\">#apply function to NumPy array\n<\/span>my_function(data)\n\narray([[ 7, 9, 11, 13],\n       [15, 17, 19, 21]])<\/span><\/span><\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u8bf7\u6ce8\u610f\uff0c\u6b64\u8bed\u6cd5\u5bf9\u4e8e\u591a\u7ef4\u6570\u7ec4\u548c\u4e00\u7ef4\u6570\u7ec4\u90fd\u540c\u6837\u6709\u6548\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u5176\u4ed6\u8d44\u6e90<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u6559\u7a0b\u89e3\u91ca\u4e86\u5982\u4f55\u5728 NumPy \u4e2d\u6267\u884c\u5176\u4ed6\u5e38\u89c1\u64cd\u4f5c\uff1a<\/span><\/p>\n<p><a href=\"https:\/\/statorials.org\/cn\/numpy-\u6dfb\u52a0\u5217\/\" target=\"_blank\" rel=\"noopener\">\u5982\u4f55\u5411 NumPy \u6570\u7ec4\u6dfb\u52a0\u5217<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/python-numpy-\u6570\u7ec4\u5217\u8868\/\" target=\"_blank\" rel=\"noopener\">\u5982\u4f55\u5728 Python \u4e2d\u5c06 NumPy \u6570\u7ec4\u8f6c\u6362\u4e3a\u5217\u8868<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/csv-\u4e2d\u7684-numpy-\u8868\/\" target=\"_blank\" rel=\"noopener\">\u5982\u4f55\u5c06 NumPy \u6570\u7ec4\u5bfc\u51fa\u5230 CSV \u6587\u4ef6<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u57fa\u672c\u8bed\u6cd5\u5c06\u51fd\u6570\u6620\u5c04\u5230 NumPy \u6570\u7ec4\uff1a #define function my_functio [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-2200","post","type-post","status-publish","format-standard","hentry","category-11"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5982\u4f55\u5c06\u51fd\u6570\u6620\u5c04\u5230 NumPy 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