{"id":970979,"date":"2024-12-27T05:30:46","date_gmt":"2024-12-26T21:30:46","guid":{"rendered":""},"modified":"2024-12-27T05:30:48","modified_gmt":"2024-12-26T21:30:48","slug":"python%e5%a6%82%e4%bd%95%e8%a1%a8%e7%a4%ba%e5%a4%9a%e7%bb%b4%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/970979.html","title":{"rendered":"python\u5982\u4f55\u8868\u793a\u591a\u7ef4\u6570\u7ec4"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24194037\/d82bc930-eb01-4eed-87f1-7e7acaf95d88.webp\" alt=\"python\u5982\u4f55\u8868\u793a\u591a\u7ef4\u6570\u7ec4\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\uff0c\u591a\u7ef4\u6570\u7ec4\u901a\u5e38\u4f7f\u7528NumPy\u5e93\u6765\u8868\u793a\u3002NumPy\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5f3a\u5927\u7684N\u7ef4\u6570\u7ec4\u5bf9\u8c61ndarray\u3001\u7075\u6d3b\u7684\u5e7f\u64ad\u529f\u80fd\u3001\u9ad8\u6548\u7684\u5143\u7d20\u7ea7\u8fd0\u7b97\u548c\u8bb8\u591a\u6709\u7528\u7684\u7ebf\u6027\u4ee3\u6570\u3001\u5085\u91cc\u53f6\u53d8\u6362\u548c\u968f\u673a\u6570\u529f\u80fd\u3002<\/strong> \u5176\u4e2d\uff0cndarray\u662fNumPy\u5e93\u7684\u6838\u5fc3\u6570\u636e\u7ed3\u6784\uff0c\u53ef\u4ee5\u975e\u5e38\u65b9\u4fbf\u5730\u7528\u6765\u521b\u5efa\u548c\u64cd\u4f5c\u591a\u7ef4\u6570\u7ec4\u3002\u901a\u8fc7NumPy\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u591a\u7ef4\u6570\u7ec4\u7684\u9ad8\u6548\u8fd0\u7b97\u548c\u5904\u7406\uff0c\u8fd9\u5728\u79d1\u5b66\u8ba1\u7b97\u3001\u6570\u636e\u5206\u6790\u548c<a href=\"https:\/\/docs.pingcode.com\/ask\/59192.html\" target=\"_blank\">\u673a\u5668\u5b66\u4e60<\/a>\u7b49\u9886\u57df\u975e\u5e38\u5e38\u89c1\u3002\u4ee5\u4e0b\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5728Python\u4e2d\u4f7f\u7528NumPy\u8868\u793a\u548c\u64cd\u4f5c\u591a\u7ef4\u6570\u7ec4\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001NUMPY\u5e93\u7b80\u4ecb<\/p>\n<\/p>\n<p><p>NumPy\u662fPython\u4e2d\u4e00\u4e2a\u7528\u4e8e\u79d1\u5b66\u8ba1\u7b97\u7684\u5e93\uff0c\u63d0\u4f9b\u4e86\u5bf9\u6570\u7ec4\u548c\u77e9\u9635\u8fd0\u7b97\u7684\u652f\u6301\u3002NumPy\u7684\u6838\u5fc3\u662fndarray\u5bf9\u8c61\uff0c\u662f\u4e00\u4e2a\u591a\u7ef4\u6570\u7ec4\uff0c\u652f\u6301\u5404\u79cd\u7ef4\u5ea6\u7684\u6570\u636e\u3002NumPy\u8fd8\u63d0\u4f9b\u4e86\u8bb8\u591a\u6570\u5b66\u51fd\u6570\uff0c\u5e2e\u52a9\u6211\u4eec\u5bf9\u6570\u7ec4\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<p><p>NumPy\u5e93\u7684\u5b89\u88c5\u975e\u5e38\u7b80\u5355\uff0c\u53ef\u4ee5\u901a\u8fc7pip\u547d\u4ee4\u8fdb\u884c\u5b89\u88c5\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-bash\">pip install numpy<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u5bfc\u5165NumPy\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>NumPy\u7684ndarray\u5bf9\u8c61\u7c7b\u4f3c\u4e8ePython\u7684\u5185\u7f6e\u5217\u8868\u5bf9\u8c61\uff0c\u4f46\u5177\u6709\u66f4\u9ad8\u7684\u6027\u80fd\u548c\u66f4\u4e30\u5bcc\u7684\u529f\u80fd\u3002\u4f7f\u7528NumPy\uff0c\u6211\u4eec\u53ef\u4ee5\u975e\u5e38\u65b9\u4fbf\u5730\u521b\u5efa\u548c\u64cd\u4f5c\u591a\u7ef4\u6570\u7ec4\u3002<\/p>\n<\/p>\n<p><p>\u4e8c\u3001\u521b\u5efa\u591a\u7ef4\u6570\u7ec4<\/p>\n<\/p>\n<p><p>\u5728NumPy\u4e2d\uff0c\u521b\u5efa\u591a\u7ef4\u6570\u7ec4\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u7684array\u51fd\u6570\u3001zeros\u51fd\u6570\u3001ones\u51fd\u6570\u3001arange\u51fd\u6570\u548clinspace\u51fd\u6570\u7b49\u3002\u4e0b\u9762\u5c06\u9010\u4e00\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<ol>\n<li>\u4f7f\u7528array\u51fd\u6570\u521b\u5efa\u591a\u7ef4\u6570\u7ec4<\/li>\n<\/ol>\n<p><p>array\u51fd\u6570\u662fNumPy\u4e2d\u6700\u5e38\u7528\u7684\u521b\u5efa\u6570\u7ec4\u7684\u65b9\u6cd5\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4f20\u5165\u4e00\u4e2a\u5d4c\u5957\u7684\u5217\u8868\u6216\u5143\u7ec4\u6765\u521b\u5efa\u591a\u7ef4\u6570\u7ec4\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<h2><strong>\u521b\u5efa\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4<\/strong><\/h2>\n<p>array_2d = np.array([[1, 2, 3], [4, 5, 6]])<\/p>\n<p>print(array_2d)<\/p>\n<h2><strong>\u521b\u5efa\u4e00\u4e2a\u4e09\u7ef4\u6570\u7ec4<\/strong><\/h2>\n<p>array_3d = np.array([[[1, 2], [3, 4]], [[5, 6], [7, 8]]])<\/p>\n<p>print(array_3d)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li>\u4f7f\u7528zeros\u51fd\u6570\u521b\u5efa\u591a\u7ef4\u6570\u7ec4<\/li>\n<\/ol>\n<p><p>zeros\u51fd\u6570\u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u5168\u4e3a\u96f6\u7684\u6570\u7ec4\uff0c\u5f62\u72b6\u7531\u4f20\u5165\u7684\u53c2\u6570\u6307\u5b9a\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u521b\u5efa\u4e00\u4e2a2x3\u7684\u4e8c\u7ef4\u6570\u7ec4\uff0c\u5143\u7d20\u5168\u4e3a0<\/p>\n<p>array_zeros = np.zeros((2, 3))<\/p>\n<p>print(array_zeros)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li>\u4f7f\u7528ones\u51fd\u6570\u521b\u5efa\u591a\u7ef4\u6570\u7ec4<\/li>\n<\/ol>\n<p><p>ones\u51fd\u6570\u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u5168\u4e3a1\u7684\u6570\u7ec4\uff0c\u5f62\u72b6\u7531\u4f20\u5165\u7684\u53c2\u6570\u6307\u5b9a\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u521b\u5efa\u4e00\u4e2a2x3\u7684\u4e8c\u7ef4\u6570\u7ec4\uff0c\u5143\u7d20\u5168\u4e3a1<\/p>\n<p>array_ones = np.ones((2, 3))<\/p>\n<p>print(array_ones)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"4\">\n<li>\u4f7f\u7528arange\u51fd\u6570\u521b\u5efa\u591a\u7ef4\u6570\u7ec4<\/li>\n<\/ol>\n<p><p>arange\u51fd\u6570\u7c7b\u4f3c\u4e8ePython\u7684range\u51fd\u6570\uff0c\u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u4e00\u7ef4\u6570\u7ec4\uff0c\u7136\u540e\u53ef\u4ee5\u901a\u8fc7reshape\u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3a\u591a\u7ef4\u6570\u7ec4\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u521b\u5efa\u4e00\u4e2a\u4e00\u7ef4\u6570\u7ec4\uff0c\u7136\u540e\u8f6c\u6362\u4e3a2x3\u7684\u4e8c\u7ef4\u6570\u7ec4<\/p>\n<p>array_arange = np.arange(6).reshape(2, 3)<\/p>\n<p>print(array_arange)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"5\">\n<li>\u4f7f\u7528linspace\u51fd\u6570\u521b\u5efa\u591a\u7ef4\u6570\u7ec4<\/li>\n<\/ol>\n<p><p>linspace\u51fd\u6570\u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u7b49\u5dee\u6570\u5217\u7684\u4e00\u7ef4\u6570\u7ec4\uff0c\u7136\u540e\u53ef\u4ee5\u901a\u8fc7reshape\u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3a\u591a\u7ef4\u6570\u7ec4\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u521b\u5efa\u4e00\u4e2a\u4e00\u7ef4\u6570\u7ec4\uff0c\u7136\u540e\u8f6c\u6362\u4e3a2x3\u7684\u4e8c\u7ef4\u6570\u7ec4<\/p>\n<p>array_linspace = np.linspace(0, 5, 6).reshape(2, 3)<\/p>\n<p>print(array_linspace)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e09\u3001\u591a\u7ef4\u6570\u7ec4\u7684\u5c5e\u6027<\/p>\n<\/p>\n<p><p>NumPy\u7684ndarray\u5bf9\u8c61\u6709\u8bb8\u591a\u5c5e\u6027\uff0c\u5e2e\u52a9\u6211\u4eec\u83b7\u53d6\u6570\u7ec4\u7684\u4fe1\u606f\uff0c\u5982\u5f62\u72b6\u3001\u7ef4\u5ea6\u3001\u6570\u636e\u7c7b\u578b\u7b49\u3002\u5e38\u7528\u7684\u5c5e\u6027\u5305\u62ec\uff1a<\/p>\n<\/p>\n<ol>\n<li>shape\u5c5e\u6027<\/li>\n<\/ol>\n<p><p>shape\u5c5e\u6027\u8fd4\u56de\u6570\u7ec4\u7684\u5f62\u72b6\uff0c\u662f\u4e00\u4e2a\u8868\u793a\u5404\u7ef4\u5ea6\u5927\u5c0f\u7684\u5143\u7ec4\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u83b7\u53d6\u6570\u7ec4\u7684\u5f62\u72b6<\/p>\n<p>print(array_2d.shape)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li>ndim\u5c5e\u6027<\/li>\n<\/ol>\n<p><p>ndim\u5c5e\u6027\u8fd4\u56de\u6570\u7ec4\u7684\u7ef4\u5ea6\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u83b7\u53d6\u6570\u7ec4\u7684\u7ef4\u5ea6<\/p>\n<p>print(array_2d.ndim)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li>dtype\u5c5e\u6027<\/li>\n<\/ol>\n<p><p>dtype\u5c5e\u6027\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u636e\u7c7b\u578b\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u83b7\u53d6\u6570\u7ec4\u5143\u7d20\u7684\u6570\u636e\u7c7b\u578b<\/p>\n<p>print(array_2d.dtype)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"4\">\n<li>size\u5c5e\u6027<\/li>\n<\/ol>\n<p><p>size\u5c5e\u6027\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u603b\u4e2a\u6570\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u83b7\u53d6\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u603b\u4e2a\u6570<\/p>\n<p>print(array_2d.size)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u56db\u3001\u591a\u7ef4\u6570\u7ec4\u7684\u5207\u7247\u4e0e\u7d22\u5f15<\/p>\n<\/p>\n<p><p>\u5728NumPy\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5207\u7247\u548c\u7d22\u5f15\u6765\u8bbf\u95ee\u548c\u4fee\u6539\u591a\u7ef4\u6570\u7ec4\u7684\u5143\u7d20\u3002\u5207\u7247\u548c\u7d22\u5f15\u7684\u8bed\u6cd5\u4e0ePython\u5185\u7f6e\u7684\u5217\u8868\u7c7b\u4f3c\uff0c\u4f46\u652f\u6301\u66f4\u591a\u7684\u529f\u80fd\u3002<\/p>\n<\/p>\n<ol>\n<li>\u57fa\u672c\u7d22\u5f15<\/li>\n<\/ol>\n<p><p>\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u7d22\u5f15\u6765\u8bbf\u95ee\u6570\u7ec4\u7684\u67d0\u4e2a\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u8bbf\u95ee\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u67d0\u4e2a\u5143\u7d20<\/p>\n<p>element = array_2d[0, 1]<\/p>\n<p>print(element)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li>\u5207\u7247<\/li>\n<\/ol>\n<p><p>\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5207\u7247\u6765\u8bbf\u95ee\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u8bbf\u95ee\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u67d0\u4e00\u884c<\/p>\n<p>row = array_2d[1, :]<\/p>\n<p>print(row)<\/p>\n<h2><strong>\u8bbf\u95ee\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u67d0\u4e00\u5217<\/strong><\/h2>\n<p>column = array_2d[:, 2]<\/p>\n<p>print(column)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li>\u9ad8\u7ea7\u7d22\u5f15<\/li>\n<\/ol>\n<p><p>NumPy\u8fd8\u652f\u6301\u5e03\u5c14\u7d22\u5f15\u548c\u82b1\u5f0f\u7d22\u5f15\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u5e03\u5c14\u7d22\u5f15<\/p>\n<p>bool_index = array_2d &gt; 3<\/p>\n<p>print(array_2d[bool_index])<\/p>\n<h2><strong>\u82b1\u5f0f\u7d22\u5f15<\/strong><\/h2>\n<p>fancy_index = array_2d[[0, 1], [1, 2]]<\/p>\n<p>print(fancy_index)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e94\u3001\u591a\u7ef4\u6570\u7ec4\u7684\u8fd0\u7b97<\/p>\n<\/p>\n<p><p>NumPy\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u8fd0\u7b97\u529f\u80fd\uff0c\u652f\u6301\u5bf9\u591a\u7ef4\u6570\u7ec4\u8fdb\u884c\u5404\u79cd\u8fd0\u7b97\uff0c\u5982\u52a0\u6cd5\u3001\u51cf\u6cd5\u3001\u4e58\u6cd5\u3001\u9664\u6cd5\u3001\u77e9\u9635\u4e58\u6cd5\u7b49\u3002<\/p>\n<\/p>\n<ol>\n<li>\u57fa\u672c\u8fd0\u7b97<\/li>\n<\/ol>\n<p><p>NumPy\u652f\u6301\u5bf9\u6570\u7ec4\u8fdb\u884c\u5143\u7d20\u7ea7\u7684\u52a0\u6cd5\u3001\u51cf\u6cd5\u3001\u4e58\u6cd5\u548c\u9664\u6cd5\u8fd0\u7b97\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u521b\u5efa\u4e24\u4e2a\u4e8c\u7ef4\u6570\u7ec4<\/p>\n<p>array_a = np.array([[1, 2], [3, 4]])<\/p>\n<p>array_b = np.array([[5, 6], [7, 8]])<\/p>\n<h2><strong>\u52a0\u6cd5\u8fd0\u7b97<\/strong><\/h2>\n<p>array_add = array_a + array_b<\/p>\n<p>print(array_add)<\/p>\n<h2><strong>\u51cf\u6cd5\u8fd0\u7b97<\/strong><\/h2>\n<p>array_sub = array_a - array_b<\/p>\n<p>print(array_sub)<\/p>\n<h2><strong>\u4e58\u6cd5\u8fd0\u7b97<\/strong><\/h2>\n<p>array_mul = array_a * array_b<\/p>\n<p>print(array_mul)<\/p>\n<h2><strong>\u9664\u6cd5\u8fd0\u7b97<\/strong><\/h2>\n<p>array_div = array_a \/ array_b<\/p>\n<p>print(array_div)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li>\u5e7f\u64ad\u673a\u5236<\/li>\n<\/ol>\n<p><p>\u5e7f\u64ad\u673a\u5236\u662fNumPy\u7684\u4e00\u4e2a\u91cd\u8981\u7279\u6027\uff0c\u5141\u8bb8\u6211\u4eec\u5bf9\u4e0d\u540c\u5f62\u72b6\u7684\u6570\u7ec4\u8fdb\u884c\u8fd0\u7b97\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u521b\u5efa\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\u548c\u4e00\u4e2a\u4e00\u7ef4\u6570\u7ec4<\/p>\n<p>array_c = np.array([[1, 2], [3, 4]])<\/p>\n<p>array_d = np.array([5, 6])<\/p>\n<h2><strong>\u5e7f\u64ad\u673a\u5236<\/strong><\/h2>\n<p>array_broadcast = array_c + array_d<\/p>\n<p>print(array_broadcast)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li>\u77e9\u9635\u4e58\u6cd5<\/li>\n<\/ol>\n<p><p>NumPy\u63d0\u4f9b\u4e86dot\u51fd\u6570\uff0c\u7528\u4e8e\u8fdb\u884c\u77e9\u9635\u4e58\u6cd5\u8fd0\u7b97\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u77e9\u9635\u4e58\u6cd5<\/p>\n<p>array_dot = np.dot(array_a, array_b)<\/p>\n<p>print(array_dot)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u516d\u3001\u591a\u7ef4\u6570\u7ec4\u7684\u5e94\u7528<\/p>\n<\/p>\n<p><p>\u591a\u7ef4\u6570\u7ec4\u5728\u79d1\u5b66\u8ba1\u7b97\u3001\u6570\u636e\u5206\u6790\u548c\u673a\u5668\u5b66\u4e60\u7b49\u9886\u57df\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u4e0b\u9762\u4ecb\u7ecd\u51e0\u4e2a\u5e38\u89c1\u7684\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n<ol>\n<li>\u56fe\u50cf\u5904\u7406<\/li>\n<\/ol>\n<p><p>\u5728\u56fe\u50cf\u5904\u7406\u4e2d\uff0c\u56fe\u50cf\u901a\u5e38\u8868\u793a\u4e3a\u4e00\u4e2a\u4e09\u7ef4\u6570\u7ec4\uff0c\u5176\u4e2d\u4e24\u4e2a\u7ef4\u5ea6\u8868\u793a\u56fe\u50cf\u7684\u5bbd\u5ea6\u548c\u9ad8\u5ea6\uff0c\u7b2c\u4e09\u4e2a\u7ef4\u5ea6\u8868\u793a\u989c\u8272\u901a\u9053\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528NumPy\u5bf9\u56fe\u50cf\u8fdb\u884c\u5404\u79cd\u5904\u7406\uff0c\u5982\u88c1\u526a\u3001\u65cb\u8f6c\u3001\u6ee4\u6ce2\u7b49\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li>\u6570\u636e\u5206\u6790<\/li>\n<\/ol>\n<p><p>\u5728\u6570\u636e\u5206\u6790\u4e2d\uff0c\u591a\u7ef4\u6570\u7ec4\u5e38\u7528\u4e8e\u5b58\u50a8\u548c\u5904\u7406\u591a\u7ef4\u6570\u636e\u96c6\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528NumPy\u8fdb\u884c\u7edf\u8ba1\u5206\u6790\u3001\u6570\u636e\u53d8\u6362\u548c\u6570\u636e\u53ef\u89c6\u5316\u7b49\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<ol start=\"3\">\n<li>\u673a\u5668\u5b66\u4e60<\/li>\n<\/ol>\n<p><p>\u5728\u673a\u5668\u5b66\u4e60\u4e2d\uff0c\u591a\u7ef4\u6570\u7ec4\u5e38\u7528\u4e8e\u8868\u793a\u7279\u5f81\u77e9\u9635\u548c\u6807\u7b7e\u5411\u91cf\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528NumPy\u5bf9\u6570\u636e\u8fdb\u884c\u9884\u5904\u7406\u3001\u7279\u5f81\u9009\u62e9\u548c\u6a21\u578b\u8bad\u7ec3\u7b49\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<p><p>\u603b\u7ed3<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u4e86\u89e3\u4e86\u5982\u4f55\u5728Python\u4e2d\u4f7f\u7528NumPy\u8868\u793a\u548c\u64cd\u4f5c\u591a\u7ef4\u6570\u7ec4\u3002NumPy\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u591a\u7ef4\u6570\u7ec4\u5bf9\u8c61ndarray\uff0c\u652f\u6301\u9ad8\u6548\u7684\u6570\u7ec4\u8fd0\u7b97\u548c\u5904\u7406\u3002\u591a\u7ef4\u6570\u7ec4\u5728\u79d1\u5b66\u8ba1\u7b97\u3001\u6570\u636e\u5206\u6790\u548c\u673a\u5668\u5b66\u4e60\u7b49\u9886\u57df\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u662fPython\u79d1\u5b66\u8ba1\u7b97\u751f\u6001\u7cfb\u7edf\u4e2d\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\u3002\u638c\u63e1NumPy\u7684\u4f7f\u7528\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u9ad8\u6548\u5730\u8fdb\u884c\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u521b\u5efa\u591a\u7ef4\u6570\u7ec4\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528NumPy\u5e93\u6765\u521b\u5efa\u548c\u64cd\u4f5c\u591a\u7ef4\u6570\u7ec4\u3002\u9996\u5148\uff0c\u9700\u8981\u5b89\u88c5NumPy\u5e93\uff0c\u53ef\u4ee5\u4f7f\u7528\u547d\u4ee4<code>pip install numpy<\/code>\u3002\u521b\u5efa\u591a\u7ef4\u6570\u7ec4\u7684\u65b9\u5f0f\u5982\u4e0b\uff1a  <\/p>\n<pre><code class=\"language-python\">import numpy as np\n\n# \u521b\u5efa\u4e00\u4e2a2\u7ef4\u6570\u7ec4\narray_2d = np.array([[1, 2, 3], [4, 5, 6]])\nprint(array_2d)\n<\/code><\/pre>\n<p>\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u4f60\u53ef\u4ee5\u8f7b\u677e\u5730\u521b\u5efa\u4efb\u610f\u7ef4\u5ea6\u7684\u6570\u7ec4\u3002\u591a\u7ef4\u6570\u7ec4\u7684\u5f62\u72b6\u548c\u6570\u636e\u7c7b\u578b\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8fdb\u884c\u8c03\u6574\u3002<\/p>\n<p><strong>\u5982\u4f55\u8bbf\u95ee\u548c\u4fee\u6539\u591a\u7ef4\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1f<\/strong><br \/>\u5728Python\u7684\u591a\u7ef4\u6570\u7ec4\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u8bbf\u95ee\u548c\u4fee\u6539\u5143\u7d20\u3002\u5bf9\u4e8e2\u7ef4\u6570\u7ec4\uff0c\u4f7f\u7528\u4e24\u4e2a\u7d22\u5f15\u6765\u6307\u5b9a\u884c\u548c\u5217\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u793a\u4f8b\u4ee3\u7801\uff1a  <\/p>\n<pre><code class=\"language-python\"># \u8bbf\u95ee\u5143\u7d20\nelement = array_2d[0, 1]  # \u8bbf\u95ee\u7b2c\u4e00\u884c\u7b2c\u4e8c\u5217\u7684\u5143\u7d20\nprint(element)  # \u8f93\u51fa\uff1a2\n\n# \u4fee\u6539\u5143\u7d20\narray_2d[1, 2] = 10  # \u5c06\u7b2c\u4e8c\u884c\u7b2c\u4e09\u5217\u7684\u5143\u7d20\u6539\u4e3a10\nprint(array_2d)\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u7075\u6d3b\u7684\u8bbf\u95ee\u548c\u4fee\u6539\u65b9\u5f0f\u4f7f\u5f97\u6570\u636e\u5904\u7406\u53d8\u5f97\u66f4\u52a0\u9ad8\u6548\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\u5982\u4f55\u6267\u884c\u591a\u7ef4\u6570\u7ec4\u7684\u6570\u5b66\u8fd0\u7b97\uff1f<\/strong><br \/>\u4f7f\u7528NumPy\u5e93\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u5bf9\u591a\u7ef4\u6570\u7ec4\u8fdb\u884c\u5404\u79cd\u6570\u5b66\u8fd0\u7b97\u3002\u6bd4\u5982\uff0c\u53ef\u4ee5\u8fdb\u884c\u52a0\u6cd5\u3001\u51cf\u6cd5\u3001\u4e58\u6cd5\u7b49\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u793a\u4f8b\uff1a  <\/p>\n<pre><code class=\"language-python\">array_a = np.array([[1, 2], [3, 4]])\narray_b = np.array([[5, 6], [7, 8]])\n\n# \u6570\u7ec4\u52a0\u6cd5\nresult_add = array_a + array_b\n\n# \u6570\u7ec4\u4e58\u6cd5\nresult_mul = array_a * array_b\n\nprint(result_add)\nprint(result_mul)\n<\/code><\/pre>\n<p>NumPy\u63d0\u4f9b\u7684\u5e7f\u64ad\u529f\u80fd\u4f7f\u5f97\u6570\u7ec4\u8fd0\u7b97\u66f4\u52a0\u7075\u6d3b\uff0c\u5373\u4f7f\u6570\u7ec4\u7684\u7ef4\u5ea6\u4e0d\u540c\uff0c\u4e5f\u53ef\u4ee5\u8fdb\u884c\u8fd0\u7b97\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u591a\u7ef4\u6570\u7ec4\u901a\u5e38\u4f7f\u7528NumPy\u5e93\u6765\u8868\u793a\u3002NumPy\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5f3a\u5927\u7684N\u7ef4\u6570\u7ec4\u5bf9\u8c61ndarray\u3001\u7075 [&hellip;]","protected":false},"author":3,"featured_media":970985,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/970979"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=970979"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/970979\/revisions"}],"predecessor-version":[{"id":970989,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/970979\/revisions\/970989"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/970985"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=970979"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=970979"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=970979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}