{"id":314929,"date":"2024-05-20T23:47:06","date_gmt":"2024-05-20T15:47:06","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/314929.html"},"modified":"2024-05-20T23:47:14","modified_gmt":"2024-05-20T15:47:14","slug":"numpy-%e6%9c%89%e5%93%aa%e4%ba%9b%e6%a0%b8%e5%bf%83%e7%9f%a5%e8%af%86%e7%82%b9%e5%80%bc%e5%be%97%e5%85%b3%e6%b3%a8","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/314929.html","title":{"rendered":"Numpy \u6709\u54ea\u4e9b\u6838\u5fc3\u77e5\u8bc6\u70b9\u503c\u5f97\u5173\u6ce8"},"content":{"rendered":"

\"Numpy<\/p>\n

NumPy\u662f\u4e00\u4e2a\u5f00\u6e90\u7684Python\u5e93\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u6570\u503c\u8ba1\u7b97\u4e2d\uff0c\u7279\u522b\u662f\u5bf9\u4e8e\u5927\u89c4\u6a21\u6570\u636e\u3002\u5176\u6838\u5fc3\u77e5\u8bc6\u70b9\u5305\u62ec\u591a\u7ef4\u6570\u7ec4\u5bf9\u8c61\uff08ndarray\uff09\u3001\u6570\u7ec4\u521b\u5efa\u4e0e\u64cd\u4f5c\u3001\u6570\u5b66\u51fd\u6570\u3001\u7ebf\u6027\u4ee3\u6570\u8ba1\u7b97\u3001\u968f\u673a\u6570\u751f\u6210\u3001\u4ee5\u53ca\u5085\u91cc\u53f6\u53d8\u6362\u3002<\/strong> \u5176\u4e2d\uff0c\u591a\u7ef4\u6570\u7ec4\u5bf9\u8c61\uff08ndarray\uff09\u662fNumPy\u6700\u4e3a\u6838\u5fc3\u7684\u90e8\u5206\uff0c\u56e0\u4e3a\u51e0\u4e4e\u6240\u6709NumPy\u7684\u529f\u80fd\u90fd\u662f\u56f4\u7ed5\u5b83\u5c55\u5f00\u7684\u3002<\/p>\n<\/p>\n

ndarray\u63d0\u4f9b\u4e86\u4e00\u79cd\u4fbf\u6377\u7684\u65b9\u5f0f\u6765\u6267\u884c\u9ad8\u6548\u7684\u591a\u7ef4\u6570\u7ec4\u64cd\u4f5c\u3002\u5b83\u4e0ePython\u5185\u7f6e\u7684\u5217\u8868\u76f8\u6bd4\uff0c\u4e0d\u4ec5\u5728\u5b58\u50a8\u548c\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\u65f6\u663e\u8457\u63d0\u9ad8\u4e86\u6027\u80fd\uff0c\u800c\u4e14\u8fd8\u652f\u6301\u66f4\u52a0\u590d\u6742\u7684\u6570\u503c\u8ba1\u7b97\u3002\u4f8b\u5982\uff0cNumPy\u6570\u7ec4\u652f\u6301\u5411\u91cf\u5316\u7684\u64cd\u4f5c\uff0c\u8fd9\u610f\u5473\u7740\u5728\u8fdb\u884c\u6570\u5b66\u8fd0\u7b97\u65f6\uff0c\u7528\u6237\u53ef\u4ee5\u5bf9\u6570\u7ec4\u6574\u4f53\u6267\u884c\u64cd\u4f5c\uff0c\u800c\u4e0d\u662f\u9010\u5143\u7d20\u3002\u8fd9\u79cd\u7279\u70b9\u5927\u5927\u7b80\u5316\u4e86\u4ee3\u7801\u7684\u590d\u6742\u5ea6\uff0c\u540c\u65f6\u4e5f\u53ef\u4ee5\u5145\u5206\u5229\u7528\u73b0\u4ee3CPU\u7684\u591a\u6838\u7279\u6027\uff0c\u63d0\u5347\u8ba1\u7b97\u6548\u7387\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u591a\u7ef4\u6570\u7ec4\u5bf9\u8c61\uff08NDARRAY\uff09<\/h3>\n<\/p>\n

NumPy\u7684\u6838\u5fc3\u662f\u591a\u7ef4\u6570\u7ec4\u5bf9\u8c61ndarray\uff0c\u8fd9\u662f\u4e00\u4e2a\u5177\u6709\u77e2\u91cf\u7b97\u672f\u8fd0\u7b97\u548c\u590d\u6742\u5e7f\u64ad\u80fd\u529b\u7684\u5927\u578b\u591a\u7ef4\u6570\u7ec4\u3002ndarray\u4e0d\u4ec5\u80fd\u591f\u6267\u884c\u57fa\u672c\u7684\u6570\u5b66\u8fd0\u7b97\uff0c\u5982\u52a0\u51cf\u4e58\u9664\uff0c\u8fd8\u652f\u6301\u66f4\u590d\u6742\u7684\u6570\u7ec4\u95f4\u64cd\u4f5c\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u77e9\u9635\u4e58\u6cd5\u3001\u903b\u8f91\u8fd0\u7b97\u4ee5\u53ca\u7edf\u8ba1\u5206\u6790\u7b49\u3002<\/p>\n<\/p>\n

\u9996\u5148\uff0c\u4e86\u89e3ndarray\u5bf9\u8c61\u7684\u57fa\u672c\u5c5e\u6027\u662f\u64cd\u4f5cNumPy\u6570\u7ec4\u7684\u524d\u63d0\uff0c\u8fd9\u5305\u62ec\u6570\u7ec4\u7684\u5f62\u72b6\uff08shape\uff09\u3001\u5927\u5c0f\uff08size\uff09\u3001\u6570\u636e\u7c7b\u578b\uff08dtype\uff09\u7b49\u3002\u7136\u540e\uff0c\u638c\u63e1\u5982\u4f55\u521b\u5efa\u3001\u7d22\u5f15\u3001\u5207\u7247\u548c\u8fed\u4ee3ndarray\u5bf9\u8c61\u5bf9\u4e8e\u8fdb\u884c\u6709\u6548\u7684\u6570\u503c\u8ba1\u7b97\u4e5f\u6781\u4e3a\u91cd\u8981\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u6570\u7ec4\u521b\u5efa\u4e0e\u64cd\u4f5c<\/h3>\n<\/p>\n

\u521b\u5efa\u6570\u7ec4\u662f\u4f7f\u7528NumPy\u8fdb\u884c\u6570\u636e\u5206\u6790\u548c\u79d1\u5b66\u8ba1\u7b97\u7684\u7b2c\u4e00\u6b65\u3002NumPy\u63d0\u4f9b\u4e86\u591a\u79cd\u521b\u5efa\u6570\u7ec4\u7684\u65b9\u6cd5\uff0c\u4f8b\u5982\u4f7f\u7528array()\u51fd\u6570\u76f4\u63a5\u4ecePython\u5217\u8868\u6216\u5143\u7ec4\u521b\u5efa\u6570\u7ec4\uff0c\u6216\u8005\u4f7f\u7528arange()\u3001linspace()\u7b49\u51fd\u6570\u751f\u6210\u5177\u6709\u7279\u5b9a\u89c4\u5219\u7684\u6570\u7ec4\u3002<\/p>\n<\/p>\n

\u6570\u7ec4\u64cd\u4f5c\u662fNumPy\u7684\u53e6\u4e00\u5927\u6838\u5fc3\uff0c\u5305\u62ec\u6570\u7ec4\u5f62\u72b6\u6539\u53d8\u3001\u6570\u7ec4\u5927\u5c0f\u8c03\u6574\u3001\u6570\u7ec4\u7684\u62fc\u63a5\u4e0e\u5206\u5272\u7b49\u3002\u638c\u63e1\u5982\u4f55\u6709\u6548\u5730\u64cd\u4f5c\u6570\u7ec4\u4e0d\u4ec5\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u5904\u7406\u7684\u6548\u7387\uff0c\u8fd8\u53ef\u4ee5\u5728\u591a\u7ef4\u7a7a\u95f4\u4e2d\u7075\u6d3b\u5730\u5904\u7406\u6570\u636e\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u6570\u5b66\u51fd\u6570<\/h3>\n<\/p>\n

NumPy\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u7684\u6570\u5b66\u51fd\u6570\uff0c\u7528\u4e8e\u5904\u7406\u6570\u7ec4\u4e0a\u7684\u6570\u503c\u8ba1\u7b97\uff0c\u5305\u62ec\u57fa\u672c\u7684\u6570\u5b66\u8fd0\u7b97\uff08\u52a0\u3001\u51cf\u3001\u4e58\u3001\u9664\u7b49\uff09\u3001\u7edf\u8ba1\u64cd\u4f5c\uff08\u6c42\u548c\u3001\u6c42\u5747\u503c\u3001\u6807\u51c6\u5dee\u7b49\uff09\u3001\u4e09\u89d2\u51fd\u6570\u548c\u6307\u6570\u51fd\u6570\u7b49\u3002\u8fd9\u4e9b\u529f\u80fd\u5f3a\u5927\u7684\u6570\u5b66\u5de5\u5177\u662f\u8fdb\u884c\u79d1\u5b66\u8ba1\u7b97\u7684\u57fa\u77f3\uff0c\u80fd\u591f\u6ee1\u8db3\u7edd\u5927\u591a\u6570\u6570\u636e\u5206\u6790\u7684\u9700\u6c42\u3002<\/p>\n<\/p>\n

\u56db\u3001\u7ebf\u6027\u4ee3\u6570\u8ba1\u7b97<\/h3>\n<\/p>\n

\u7ebf\u6027\u4ee3\u6570\u662f\u6570\u5b66\u7684\u4e00\u4e2a\u5206\u652f\uff0c\u4e13\u6ce8\u4e8e\u5411\u91cf\u7a7a\u95f4\u548c\u7ebf\u6027\u6620\u5c04\u3002NumPy\u901a\u8fc7linalg\u5b50\u6a21\u5757\u4e3a\u7528\u6237\u63d0\u4f9b\u4e86\u4e00\u5957\u4e30\u5bcc\u7684\u7ebf\u6027\u4ee3\u6570\u5de5\u5177\uff0c\u5305\u62ec\u77e9\u9635\u4e58\u6cd5\u3001\u6c42\u89e3\u7ebf\u6027\u65b9\u7a0b\u7ec4\u3001\u8ba1\u7b97\u884c\u5217\u5f0f\u548c\u77e9\u9635\u7279\u5f81\u503c\u7b49\u3002\u5229\u7528\u8fd9\u4e9b\u5de5\u5177\u53ef\u4ee5\u65b9\u4fbf\u5730\u89e3\u51b3\u591a\u79cd\u7ebf\u6027\u4ee3\u6570\u95ee\u9898\u3002<\/p>\n<\/p>\n

\u4e94\u3001\u968f\u673a\u6570\u751f\u6210<\/h3>\n<\/p>\n

\u5728\u8fdb\u884c\u6a21\u62df\u5b9e\u9a8c\u6216\u8005\u7b97\u6cd5\u521d\u59cb\u5316\u65f6\uff0c\u968f\u673a\u6570\u53d1\u6325\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002NumPy\u7684random\u5b50\u6a21\u5757\u63d0\u4f9b\u4e86\u751f\u6210\u968f\u673a\u6570\u7684\u5e7f\u6cdb\u529f\u80fd\uff0c\u652f\u6301\u591a\u79cd\u6982\u7387\u5206\u5e03\u7684\u968f\u673a\u6570\u751f\u6210\uff0c\u5982\u5747\u5300\u5206\u5e03\u3001\u6b63\u6001\u5206\u5e03\u7b49\u3002\u9ad8\u6548\u3001\u7075\u6d3b\u7684\u968f\u673a\u6570\u5de5\u5177\u5bf9\u4e8e\u6a21\u62df\u590d\u6742\u7cfb\u7edf\u548c\u7b97\u6cd5\u8c03\u8bd5\u975e\u5e38\u6709\u5e2e\u52a9\u3002<\/p>\n<\/p>\n

\u516d\u3001\u5085\u91cc\u53f6\u53d8\u6362<\/h3>\n<\/p>\n

\u5085\u91cc\u53f6\u53d8\u6362\u662f\u4e00\u79cd\u5c06\u4fe1\u53f7\u4ece\u65f6\u95f4\u57df\u8f6c\u6362\u5230\u9891\u7387\u57df\u7684\u6570\u5b66\u5de5\u5177\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u4fe1\u53f7\u5904\u7406\u3001\u56fe\u50cf\u5904\u7406\u7b49\u9886\u57df\u3002NumPy\u901a\u8fc7fft\u5b50\u6a21\u5757\u63d0\u4f9b\u4e86\u5feb\u901f\u5085\u91cc\u53f6\u53d8\u6362\uff08FFT\uff09\u7684\u5b9e\u73b0\uff0c\u8ba9\u7528\u6237\u80fd\u591f\u8f7b\u677e\u5730\u5bf9\u6570\u7ec4\u8fdb\u884c\u5085\u91cc\u53f6\u53d8\u6362\uff0c\u5206\u6790\u6570\u636e\u7684\u9891\u57df\u7279\u6027\u3002<\/p>\n<\/p>\n

NumPy\u4f5c\u4e3aPython\u6570\u636e\u79d1\u5b66\u751f\u6001\u7cfb\u7edf\u7684\u57fa\u77f3\uff0c\u5176\u63d0\u4f9b\u7684\u591a\u7ef4\u6570\u7ec4\u3001\u5f3a\u5927\u7684\u6570\u5b66\u8ba1\u7b97\u529f\u80fd\u4ee5\u53ca\u591a\u6837\u5316\u7684\u9ad8\u7ea7\u6570\u636e\u5904\u7406\u80fd\u529b\uff0c\u662f\u8fdb\u884c\u79d1\u5b66\u8ba1\u7b97\u548c\u6570\u636e\u5206\u6790\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002\u6df1\u5165\u7406\u89e3\u548c\u638c\u63e1\u4e0a\u8ff0\u6838\u5fc3\u77e5\u8bc6\u70b9\uff0c\u5c06\u80fd\u591f\u5927\u5927\u63d0\u5347\u5728\u6570\u636e\u79d1\u5b66\u9886\u57df\u7684\u5de5\u4f5c\u6548\u7387\u548c\u95ee\u9898\u89e3\u51b3\u80fd\u529b\u3002<\/p>\n<\/p>\n

\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

1. Numpy\u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n

Numpy\u662f\u4e00\u4e2a\u5f3a\u5927\u7684Python\u5e93\uff0c\u4e13\u95e8\u7528\u4e8e\u6570\u503c\u8ba1\u7b97\u548c\u6570\u636e\u5206\u6790\u3002\u5b83\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u591a\u7ef4\u6570\u7ec4\u5bf9\u8c61\u548c\u5404\u79cd\u7528\u4e8e\u6570\u7ec4\u64cd\u4f5c\u7684\u51fd\u6570\uff0c\u540c\u65f6\u8fd8\u5177\u5907\u5e7f\u64ad\u529f\u80fd\u548c\u6574\u5408C\/C++\/Fortran\u4ee3\u7801\u7684\u63a5\u53e3\uff0c\u4f7f\u5f97\u5728Python\u4e2d\u8fdb\u884c\u5927\u89c4\u6a21\u6570\u636e\u5904\u7406\u548c\u8fd0\u7b97\u53d8\u5f97\u66f4\u52a0\u7b80\u5355\u548c\u9ad8\u6548\u3002<\/p>\n

2. Numpy\u4e2d\u7684\u591a\u7ef4\u6570\u7ec4\u662f\u5982\u4f55\u64cd\u4f5c\u7684\uff1f<\/strong><\/p>\n

\u5728Numpy\u4e2d\uff0c\u6838\u5fc3\u7684\u6570\u636e\u7ed3\u6784\u662f\u591a\u7ef4\u6570\u7ec4\uff08ndarray\uff09\u3002\u901a\u8fc7Numpy\u7684\u6570\u7ec4\u64cd\u4f5c\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8fdb\u884c\u5143\u7d20\u7684\u5feb\u901f\u8bbf\u95ee\u3001\u4fee\u6539\u548c\u64cd\u4f5c\uff0c\u4f8b\u5982\u6570\u7ec4\u7684\u5207\u7247\u3001\u7d22\u5f15\u548c\u62fc\u63a5\u7b49\u3002\u6b64\u5916\uff0cNumpy\u8fd8\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u7684\u6570\u5b66\u548c\u903b\u8f91\u8fd0\u7b97\u51fd\u6570\uff0c\u4f7f\u5f97\u5bf9\u6570\u7ec4\u8fdb\u884c\u5143\u7d20\u7ea7\u7684\u6570\u503c\u8ba1\u7b97\u53d8\u5f97\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n

3. Numpy\u7684\u5e7f\u64ad\u529f\u80fd\u6709\u4ec0\u4e48\u4f5c\u7528\uff1f<\/strong><\/p>\n

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