{"id":1144282,"date":"2025-01-08T22:58:19","date_gmt":"2025-01-08T14:58:19","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1144282.html"},"modified":"2025-01-08T22:58:23","modified_gmt":"2025-01-08T14:58:23","slug":"python%e5%a6%82%e4%bd%95%e5%af%b9%e4%b8%80%e4%b8%aa%e6%95%b0%e7%bb%84%e5%85%a8%e9%83%a8%e8%b5%8b%e5%80%bc%e4%b8%ba0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1144282.html","title":{"rendered":"python\u5982\u4f55\u5bf9\u4e00\u4e2a\u6570\u7ec4\u5168\u90e8\u8d4b\u503c\u4e3a0"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24181445\/8b600482-5d0d-4ecb-a0f4-e8b622a303f1.webp\" alt=\"python\u5982\u4f55\u5bf9\u4e00\u4e2a\u6570\u7ec4\u5168\u90e8\u8d4b\u503c\u4e3a0\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5c06\u4e00\u4e2a\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u8d4b\u503c\u4e3a0\uff0c\u5305\u62ec\u4f7f\u7528\u5faa\u73af\u3001\u5217\u8868\u89e3\u6790\u3001NumPy\u5e93\u7b49\u3002<\/strong>\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63a2\u8ba8\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u4ee3\u7801\u793a\u4f8b\u6765\u5e2e\u52a9\u4f60\u7406\u89e3\u548c\u9009\u62e9\u6700\u9002\u5408\u4f60\u9700\u6c42\u7684\u65b9\u6848\u3002\u4ee5\u4e0b\u662f\u51e0\u79cd\u5e38\u7528\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528for\u5faa\u73af\u3001\u5217\u8868\u89e3\u6790\u3001\u76f4\u63a5\u521d\u59cb\u5316\u3001NumPy\u5e93\u4ee5\u53ca\u5176\u4ed6\u9ad8\u7ea7\u6280\u5de7\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8\u6bcf\u79cd\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u8be6\u7ec6\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<\/p>\n<p><h2>\u4e00\u3001\u4f7f\u7528for\u5faa\u73af<\/h2>\n<\/p>\n<p><p>\u4f7f\u7528for\u5faa\u73af\u662f\u6700\u76f4\u63a5\u4e14\u6613\u4e8e\u7406\u89e3\u7684\u4e00\u79cd\u65b9\u6cd5\u3002\u4f60\u53ef\u4ee5\u9010\u4e2a\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\uff0c\u7136\u540e\u5c06\u5176\u8d4b\u503c\u4e3a0\u3002<\/p>\n<\/p>\n<p><h3>\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\"># \u5b9a\u4e49\u4e00\u4e2a\u5305\u542b\u4e00\u4e9b\u5143\u7d20\u7684\u6570\u7ec4<\/p>\n<p>arr = [1, 2, 3, 4, 5]<\/p>\n<h2><strong>\u4f7f\u7528for\u5faa\u73af\u5c06\u6240\u6709\u5143\u7d20\u8d4b\u503c\u4e3a0<\/strong><\/h2>\n<p>for i in range(len(arr)):<\/p>\n<p>    arr[i] = 0<\/p>\n<p>print(arr)  # \u8f93\u51fa\uff1a[0, 0, 0, 0, 0]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u8be6\u7ec6\u89e3\u91ca<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528for\u5faa\u73af\u7684\u4e3b\u8981\u597d\u5904\u662f\u5b83\u975e\u5e38\u76f4\u89c2\uff0c\u4f60\u53ef\u4ee5\u6e05\u695a\u5730\u770b\u5230\u6bcf\u4e2a\u5143\u7d20\u662f\u5982\u4f55\u88ab\u8d4b\u503c\u7684\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u4efb\u4f55\u7c7b\u578b\u7684\u6570\u7ec4\uff0c\u65e0\u8bba\u662f\u5217\u8868\u3001\u5143\u7ec4\u8fd8\u662f\u81ea\u5b9a\u4e49\u5bf9\u8c61\u3002\u7136\u800c\uff0c\u5b83\u7684\u6548\u7387\u76f8\u5bf9\u8f83\u4f4e\uff0c\u5c24\u5176\u662f\u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u65f6\uff0c\u901f\u5ea6\u53ef\u80fd\u4f1a\u6210\u4e3a\u4e00\u4e2a\u74f6\u9888\u3002<\/p>\n<\/p>\n<p><h2>\u4e8c\u3001\u4f7f\u7528\u5217\u8868\u89e3\u6790<\/h2>\n<\/p>\n<p><p>\u5217\u8868\u89e3\u6790\u662fPython\u4e2d\u7684\u4e00\u79cd\u7b80\u6d01\u4e14\u9ad8\u6548\u7684\u8bed\u6cd5\u7cd6\uff0c\u7528\u4e8e\u751f\u6210\u65b0\u7684\u5217\u8868\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u89e3\u6790\u6765\u521b\u5efa\u4e00\u4e2a\u6240\u6709\u5143\u7d20\u4e3a0\u7684\u65b0\u6570\u7ec4\u3002<\/p>\n<\/p>\n<p><h3>\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\"># \u5b9a\u4e49\u4e00\u4e2a\u5305\u542b\u4e00\u4e9b\u5143\u7d20\u7684\u6570\u7ec4<\/p>\n<p>arr = [1, 2, 3, 4, 5]<\/p>\n<h2><strong>\u4f7f\u7528\u5217\u8868\u89e3\u6790\u5c06\u6240\u6709\u5143\u7d20\u8d4b\u503c\u4e3a0<\/strong><\/h2>\n<p>arr = [0 for _ in arr]<\/p>\n<p>print(arr)  # \u8f93\u51fa\uff1a[0, 0, 0, 0, 0]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u8be6\u7ec6\u89e3\u91ca<\/h3>\n<\/p>\n<p><p>\u5217\u8868\u89e3\u6790\u4e0d\u4ec5\u7b80\u6d01\uff0c\u800c\u4e14\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u6bd4for\u5faa\u73af\u66f4\u9ad8\u6548\u3002\u5b83\u9002\u7528\u4e8e\u9700\u8981\u751f\u6210\u65b0\u5217\u8868\u7684\u573a\u666f\uff0c\u4f46\u5982\u679c\u4f60\u9700\u8981\u5728\u539f\u5730\u4fee\u6539\u6570\u7ec4\uff0c\u8fd9\u79cd\u65b9\u6cd5\u5c31\u4e0d\u592a\u5408\u9002\u4e86\u3002<\/p>\n<\/p>\n<p><h2>\u4e09\u3001\u76f4\u63a5\u521d\u59cb\u5316<\/h2>\n<\/p>\n<p><p>\u5982\u679c\u4f60\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6570\u7ec4\uff0c\u5e76\u4e14\u6240\u6709\u5143\u7d20\u521d\u59cb\u503c\u90fd\u662f0\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u6570\u7ec4\u521d\u59cb\u5316\u7684\u65b9\u6cd5\u3002\u8fd9\u79cd\u65b9\u6cd5\u5728\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u6027\u80fd\u4e0a\u90fd\u6709\u4f18\u52bf\u3002<\/p>\n<\/p>\n<p><h3>\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\"># \u521b\u5efa\u4e00\u4e2a\u5305\u542b5\u4e2a\u5143\u7d20\u7684\u6570\u7ec4\uff0c\u6240\u6709\u5143\u7d20\u521d\u59cb\u503c\u4e3a0<\/p>\n<p>arr = [0] * 5<\/p>\n<p>print(arr)  # \u8f93\u51fa\uff1a[0, 0, 0, 0, 0]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u8be6\u7ec6\u89e3\u91ca<\/h3>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u975e\u5e38\u9002\u5408\u9700\u8981\u521d\u59cb\u5316\u4e00\u4e2a\u65b0\u6570\u7ec4\u7684\u573a\u666f\u3002\u5b83\u4e0d\u4ec5\u7b80\u6d01\uff0c\u800c\u4e14\u6027\u80fd\u4f18\u8d8a\uff0c\u56e0\u4e3a\u5b83\u76f4\u63a5\u5728\u5185\u5b58\u4e2d\u5206\u914d\u6240\u9700\u7684\u7a7a\u95f4\uff0c\u800c\u65e0\u9700\u9010\u4e2a\u8d4b\u503c\u3002<\/p>\n<\/p>\n<p><h2>\u56db\u3001\u4f7f\u7528NumPy\u5e93<\/h2>\n<\/p>\n<p><p>NumPy\u662fPython\u4e2d\u5904\u7406\u6570\u7ec4\u548c\u77e9\u9635\u7684\u5f3a\u5927\u5e93\u3002\u5982\u679c\u4f60\u9700\u8981\u5904\u7406\u591a\u7ef4\u6570\u7ec4\u6216\u8fdb\u884c\u590d\u6742\u7684\u6570\u503c\u8ba1\u7b97\uff0c\u4f7f\u7528NumPy\u4f1a\u66f4\u52a0\u65b9\u4fbf\u548c\u9ad8\u6548\u3002<\/p>\n<\/p>\n<p><h3>\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<h2><strong>\u521b\u5efa\u4e00\u4e2a\u5305\u542b5\u4e2a\u5143\u7d20\u7684NumPy\u6570\u7ec4\uff0c\u6240\u6709\u5143\u7d20\u521d\u59cb\u503c\u4e3a0<\/strong><\/h2>\n<p>arr = np.zeros(5)<\/p>\n<p>print(arr)  # \u8f93\u51fa\uff1a[0. 0. 0. 0. 0.]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u8be6\u7ec6\u89e3\u91ca<\/h3>\n<\/p>\n<p><p>NumPy\u4e0d\u4ec5\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u6570\u7ec4\u64cd\u4f5c\uff0c\u8fd8\u652f\u6301\u591a\u7ef4\u6570\u7ec4\u3001\u77e9\u9635\u8fd0\u7b97\u548c\u5404\u79cd\u6570\u503c\u8ba1\u7b97\u3002\u5982\u679c\u4f60\u6b63\u5728\u5904\u7406\u79d1\u5b66\u8ba1\u7b97\u6216\u6570\u636e\u5206\u6790\u4efb\u52a1\uff0cNumPy\u65e0\u7591\u662f\u6700\u4f73\u9009\u62e9\u3002<\/p>\n<\/p>\n<p><h2>\u4e94\u3001\u5176\u4ed6\u9ad8\u7ea7\u6280\u5de7<\/h2>\n<\/p>\n<p><p>\u9664\u4e86\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u8fd8\u6709\u4e00\u4e9b\u9ad8\u7ea7\u6280\u5de7\u53ef\u4ee5\u7528\u6765\u5c06\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u8d4b\u503c\u4e3a0\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528Python\u7684\u5185\u7f6e\u51fd\u6570map()\u6216\u8005\u5176\u4ed6\u7b2c\u4e09\u65b9\u5e93\uff0c\u5982Pandas\u7b49\u3002<\/p>\n<\/p>\n<p><h3>\u4f7f\u7528map()\u51fd\u6570<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\"># \u5b9a\u4e49\u4e00\u4e2a\u5305\u542b\u4e00\u4e9b\u5143\u7d20\u7684\u6570\u7ec4<\/p>\n<p>arr = [1, 2, 3, 4, 5]<\/p>\n<h2><strong>\u4f7f\u7528map()\u51fd\u6570\u5c06\u6240\u6709\u5143\u7d20\u8d4b\u503c\u4e3a0<\/strong><\/h2>\n<p>arr = list(map(lambda x: 0, arr))<\/p>\n<p>print(arr)  # \u8f93\u51fa\uff1a[0, 0, 0, 0, 0]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4f7f\u7528Pandas\u5e93<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<h2><strong>\u521b\u5efa\u4e00\u4e2a\u5305\u542b5\u4e2a\u5143\u7d20\u7684Pandas Series\uff0c\u6240\u6709\u5143\u7d20\u521d\u59cb\u503c\u4e3a0<\/strong><\/h2>\n<p>arr = pd.Series([0] * 5)<\/p>\n<p>print(arr)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>\u516d\u3001\u6027\u80fd\u6bd4\u8f83<\/h2>\n<\/p>\n<p><p>\u5728\u9009\u62e9\u5c06\u6570\u7ec4\u5143\u7d20\u5168\u90e8\u8d4b\u503c\u4e3a0\u7684\u65b9\u6cd5\u65f6\uff0c\u6027\u80fd\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u8003\u91cf\u56e0\u7d20\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e9b\u7b80\u5355\u7684\u57fa\u51c6\u6d4b\u8bd5\u6765\u6bd4\u8f83\u8fd9\u4e9b\u65b9\u6cd5\u7684\u6027\u80fd\u3002<\/p>\n<\/p>\n<p><h3>\u57fa\u51c6\u6d4b\u8bd5\u4ee3\u7801<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\">import timeit<\/p>\n<h2><strong>\u5b9a\u4e49\u4e00\u4e2a\u5305\u542b10000\u4e2a\u5143\u7d20\u7684\u6570\u7ec4<\/strong><\/h2>\n<p>arr = [i for i in range(10000)]<\/p>\n<h2><strong>\u6d4b\u8bd5for\u5faa\u73af\u65b9\u6cd5\u7684\u6027\u80fd<\/strong><\/h2>\n<p>def for_loop():<\/p>\n<p>    for i in range(len(arr)):<\/p>\n<p>        arr[i] = 0<\/p>\n<h2><strong>\u6d4b\u8bd5\u5217\u8868\u89e3\u6790\u65b9\u6cd5\u7684\u6027\u80fd<\/strong><\/h2>\n<p>def list_comprehension():<\/p>\n<p>    return [0 for _ in arr]<\/p>\n<h2><strong>\u6d4b\u8bd5NumPy\u65b9\u6cd5\u7684\u6027\u80fd<\/strong><\/h2>\n<p>def numpy_zeros():<\/p>\n<p>    import numpy as np<\/p>\n<p>    return np.zeros(len(arr))<\/p>\n<h2><strong>\u8fdb\u884c\u57fa\u51c6\u6d4b\u8bd5<\/strong><\/h2>\n<p>print(&quot;For loop:&quot;, timeit.timeit(for_loop, number=100))<\/p>\n<p>print(&quot;List comprehension:&quot;, timeit.timeit(list_comprehension, number=100))<\/p>\n<p>print(&quot;NumPy zeros:&quot;, timeit.timeit(numpy_zeros, number=100))<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u57fa\u51c6\u6d4b\u8bd5\u7ed3\u679c<\/h3>\n<\/p>\n<p><p>\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0cNumPy\u65b9\u6cd5\u7684\u6027\u80fd\u6700\u4f73\uff0c\u5176\u6b21\u662f\u5217\u8868\u89e3\u6790\u65b9\u6cd5\uff0c\u6700\u540e\u662ffor\u5faa\u73af\u65b9\u6cd5\u3002\u8fd9\u662f\u56e0\u4e3aNumPy\u7684\u5e95\u5c42\u5b9e\u73b0\u662f\u7528C\u8bed\u8a00\u7f16\u5199\u7684\uff0c\u5177\u6709\u6781\u9ad8\u7684\u6027\u80fd\u3002<\/p>\n<\/p>\n<p><h2>\u4e03\u3001\u5b9e\u9645\u5e94\u7528\u573a\u666f<\/h2>\n<\/p>\n<p><p>\u4e0d\u540c\u7684\u65b9\u6cd5\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u6709\u4e0d\u540c\u7684\u9002\u7528\u573a\u666f\u3002\u9009\u62e9\u6700\u5408\u9002\u7684\u65b9\u6cd5\u4e0d\u4ec5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\uff0c\u8fd8\u53ef\u4ee5\u663e\u8457\u63d0\u5347\u6027\u80fd\u3002<\/p>\n<\/p>\n<p><h3>\u5c0f\u89c4\u6a21\u6570\u636e\u5904\u7406<\/h3>\n<\/p>\n<p><p>\u5bf9\u4e8e\u5c0f\u89c4\u6a21\u7684\u6570\u636e\u5904\u7406\uff0c\u4f7f\u7528for\u5faa\u73af\u6216\u5217\u8868\u89e3\u6790\u5df2\u7ecf\u8db3\u591f\u3002\u5b83\u4eec\u7684\u4ee3\u7801\u7b80\u6d01\u4e14\u6613\u4e8e\u7406\u89e3\uff0c\u4e0d\u9700\u8981\u5f15\u5165\u989d\u5916\u7684\u4f9d\u8d56\u3002<\/p>\n<\/p>\n<p><h3>\u5927\u89c4\u6a21\u6570\u636e\u5904\u7406<\/h3>\n<\/p>\n<p><p>\u5bf9\u4e8e\u5927\u89c4\u6a21\u6570\u636e\u5904\u7406\uff0c\u5c24\u5176\u662f\u6d89\u53ca\u79d1\u5b66\u8ba1\u7b97\u6216\u6570\u636e\u5206\u6790\u7684\u4efb\u52a1\uff0c\u4f7f\u7528NumPy\u662f\u6700\u4f73\u9009\u62e9\u3002\u5b83\u4e0d\u4ec5\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u529f\u80fd\uff0c\u8fd8\u80fd\u663e\u8457\u63d0\u5347\u6027\u80fd\u3002<\/p>\n<\/p>\n<p><h3>\u7279\u6b8a\u9700\u6c42<\/h3>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u7279\u6b8a\u9700\u6c42\u4e0b\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u5176\u4ed6\u9ad8\u7ea7\u6280\u5de7\uff0c\u5982map()\u51fd\u6570\u6216Pandas\u5e93\u3002\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u4e3a\u4f60\u63d0\u4f9b\u989d\u5916\u7684\u7075\u6d3b\u6027\u548c\u529f\u80fd\u3002<\/p>\n<\/p>\n<p><h2>\u516b\u3001\u5e38\u89c1\u95ee\u9898\u89e3\u7b54<\/h2>\n<\/p>\n<p><h3>\u4e3a\u4ec0\u4e48\u6211\u7684\u4ee3\u7801\u8fd0\u884c\u5f97\u5f88\u6162\uff1f<\/h3>\n<\/p>\n<p><p>\u5982\u679c\u4f60\u53d1\u73b0\u4ee3\u7801\u8fd0\u884c\u5f97\u5f88\u6162\uff0c\u53ef\u80fd\u662f\u56e0\u4e3a\u4f60\u4f7f\u7528\u4e86\u6548\u7387\u8f83\u4f4e\u7684\u65b9\u6cd5\uff0c\u5982for\u5faa\u73af\u3002\u5c1d\u8bd5\u4f7f\u7528\u5217\u8868\u89e3\u6790\u6216NumPy\u6765\u63d0\u5347\u6027\u80fd\u3002<\/p>\n<\/p>\n<p><h3>\u5982\u4f55\u5904\u7406\u591a\u7ef4\u6570\u7ec4\uff1f<\/h3>\n<\/p>\n<p><p>\u5bf9\u4e8e\u591a\u7ef4\u6570\u7ec4\uff0c\u4f7f\u7528NumPy\u662f\u6700\u65b9\u4fbf\u548c\u9ad8\u6548\u7684\u9009\u62e9\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528np.zeros()\u51fd\u6570\u6765\u521b\u5efa\u4efb\u610f\u7ef4\u5ea6\u7684\u6570\u7ec4\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<h2><strong>\u521b\u5efa\u4e00\u4e2a3x3\u7684\u591a\u7ef4\u6570\u7ec4\uff0c\u6240\u6709\u5143\u7d20\u521d\u59cb\u503c\u4e3a0<\/strong><\/h2>\n<p>arr = np.zeros((3, 3))<\/p>\n<p>print(arr)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u662f\u5426\u6709\u5176\u4ed6\u66f4\u9ad8\u6548\u7684\u65b9\u6cd5\uff1f<\/h3>\n<\/p>\n<p><p>\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528NumPy\u5df2\u7ecf\u662f\u6700\u4f18\u9009\u62e9\u3002\u5982\u679c\u4f60\u6709\u66f4\u9ad8\u7684\u6027\u80fd\u9700\u6c42\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528Cython\u6216\u5176\u4ed6\u9ad8\u6027\u80fd\u8ba1\u7b97\u5e93\u3002<\/p>\n<\/p>\n<p><h2>\u4e5d\u3001\u603b\u7ed3<\/h2>\n<\/p>\n<p><p>\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u8be6\u7ec6\u63a2\u8ba8\u4e86\u5728Python\u4e2d\u5c06\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u8d4b\u503c\u4e3a0\u7684\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528for\u5faa\u73af\u3001\u5217\u8868\u89e3\u6790\u3001\u76f4\u63a5\u521d\u59cb\u5316\u3001NumPy\u5e93\u4ee5\u53ca\u5176\u4ed6\u9ad8\u7ea7\u6280\u5de7\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u4f18\u7f3a\u70b9\u548c\u9002\u7528\u573a\u666f\uff0c\u9009\u62e9\u6700\u5408\u9002\u7684\u65b9\u6cd5\u4e0d\u4ec5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\uff0c\u8fd8\u53ef\u4ee5\u663e\u8457\u63d0\u5347\u6027\u80fd\u3002\u5e0c\u671b\u901a\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u4f60\u80fd\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u8fd9\u4e9b\u65b9\u6cd5\u6765\u89e3\u51b3\u5b9e\u9645\u95ee\u9898\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u5c06\u4e00\u4e2a\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u8bbe\u7f6e\u4e3a0\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u4f7f\u7528NumPy\u5e93\u53ef\u4ee5\u8f7b\u677e\u5730\u5c06\u4e00\u4e2a\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u8d4b\u503c\u4e3a0\u3002\u53ea\u9700\u521b\u5efa\u4e00\u4e2a\u4e0e\u539f\u6570\u7ec4\u5f62\u72b6\u76f8\u540c\u7684\u5168\u96f6\u6570\u7ec4\uff0c\u6216\u8005\u76f4\u63a5\u4fee\u6539\u539f\u6570\u7ec4\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-python\">import numpy as np\n\n# \u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\narr = np.array([1, 2, 3, 4, 5])\n\n# \u65b9\u6cd5\u4e00\uff1a\u521b\u5efa\u5168\u96f6\u6570\u7ec4\nzero_array = np.zeros(arr.shape)\n\n# \u65b9\u6cd5\u4e8c\uff1a\u76f4\u63a5\u8d4b\u503c\narr.fill(0)\n\nprint(arr)  # \u8f93\u51fa: [0 0 0 0 0]\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u4efb\u610f\u7ef4\u5ea6\u7684\u6570\u7ec4\u3002<\/p>\n<p><strong>\u662f\u5426\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u5c06\u6570\u7ec4\u5143\u7d20\u7f6e\u4e3a0\uff1f<\/strong><br \/>\u5f53\u7136\u53ef\u4ee5\u3002\u5bf9\u4e8ePython\u7684\u5217\u8868\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u5feb\u901f\u521b\u5efa\u4e00\u4e2a\u65b0\u5217\u8868\uff0c\u6240\u6709\u5143\u7d20\u5747\u4e3a0\u3002\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre><code class=\"language-python\">arr = [1, 2, 3, 4, 5]\narr = [0 for _ in arr]\nprint(arr)  # \u8f93\u51fa: [0, 0, 0, 0, 0]\n<\/code><\/pre>\n<p>\u8fd9\u662f\u4e00\u79cd\u7b80\u4fbf\u7684\u65b9\u5f0f\uff0c\u4f46\u8bf7\u6ce8\u610f\uff0c\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5217\u8868\uff0c\u800c\u4e0d\u662f\u4fee\u6539\u539f\u5217\u8868\u3002<\/p>\n<p><strong>\u5728\u4e0d\u4f7f\u7528NumPy\u7684\u60c5\u51b5\u4e0b\uff0c\u5982\u4f55\u5c06\u6570\u7ec4\u7684\u5143\u7d20\u8bbe\u7f6e\u4e3a0\uff1f<\/strong><br \/>\u5982\u679c\u4e0d\u60f3\u4f7f\u7528NumPy\u5e93\uff0c\u53ef\u4ee5\u4f7f\u7528Python\u5185\u7f6e\u7684\u5217\u8868\u548c\u5faa\u73af\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code class=\"language-python\">arr = [1, 2, 3, 4, 5]\nfor i in range(len(arr)):\n    arr[i] = 0\n\nprint(arr)  # \u8f93\u51fa: [0, 0, 0, 0, 0]\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u9002\u5408\u4e8e\u7b80\u5355\u7684\u5217\u8868\u64cd\u4f5c\uff0c\u4f46\u5728\u5904\u7406\u5927\u578b\u6570\u636e\u65f6\uff0c\u6027\u80fd\u53ef\u80fd\u4e0d\u5982\u4f7f\u7528NumPy\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5c06\u4e00\u4e2a\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u8d4b\u503c\u4e3a0\uff0c\u5305\u62ec\u4f7f\u7528\u5faa\u73af\u3001\u5217\u8868\u89e3\u6790\u3001NumPy\u5e93\u7b49\u3002\u5728\u8fd9 [&hellip;]","protected":false},"author":3,"featured_media":1144295,"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\/1144282"}],"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=1144282"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1144282\/revisions"}],"predecessor-version":[{"id":1144298,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1144282\/revisions\/1144298"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1144295"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1144282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1144282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1144282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}