{"id":1116717,"date":"2025-01-08T18:19:05","date_gmt":"2025-01-08T10:19:05","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1116717.html"},"modified":"2025-01-08T18:19:07","modified_gmt":"2025-01-08T10:19:07","slug":"python%e5%88%97%e8%a1%a8%e4%b8%ad%e7%9a%84%e5%88%97%e8%a1%a8%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8b%e7%b4%a2%e5%bc%95%e5%80%bc","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1116717.html","title":{"rendered":"python\u5217\u8868\u4e2d\u7684\u5217\u8868\u5982\u4f55\u67e5\u770b\u7d22\u5f15\u503c"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25080936\/6e18ad3a-f8ed-46aa-aa7c-3f7962de1f35.webp\" alt=\"python\u5217\u8868\u4e2d\u7684\u5217\u8868\u5982\u4f55\u67e5\u770b\u7d22\u5f15\u503c\" \/><\/p>\n<p><p> <strong>\u8981\u67e5\u770bPython\u5217\u8868\u4e2d\u7684\u5217\u8868\u7684\u7d22\u5f15\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u5faa\u73af\u904d\u5386\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u4ee5\u53ca\u5185\u7f6e\u51fd\u6570\u7b49\u3002<\/strong> \u5176\u4e2d\u4e00\u79cd\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u6765\u904d\u5386\u6bcf\u4e2a\u5143\u7d20\uff0c\u5e76\u663e\u793a\u5176\u7d22\u5f15\u503c\u3002\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u6765\u7b80\u5316\u4ee3\u7801\u3002\u4e3a\u4e86\u66f4\u597d\u5730\u7406\u89e3\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5176\u4e2d\u4e00\u79cd\u65b9\u6cd5\uff0c\u5373\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u6765\u67e5\u770b\u5217\u8868\u4e2d\u7684\u5217\u8868\u7684\u7d22\u5f15\u503c\u3002<\/p>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u5217\u8868\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u53ef\u4ee5\u5b58\u50a8\u591a\u4e2a\u5143\u7d20\uff0c\u800c\u5217\u8868\u4e2d\u7684\u5217\u8868\u5219\u662f\u4e00\u79cd\u5d4c\u5957\u7ed3\u6784\u3002\u8981\u67e5\u770b\u8fd9\u4e9b\u5d4c\u5957\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u53ca\u5176\u7d22\u5f15\u503c\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528for\u5faa\u73af\u6765\u904d\u5386\u6bcf\u4e2a\u5143\u7d20\uff0c\u5e76\u4f7f\u7528enumerate\u51fd\u6570\u6765\u83b7\u53d6\u5176\u7d22\u5f15\u503c\u3002\u4e0b\u9762\u662f\u4e00\u4e9b\u5177\u4f53\u7684\u65b9\u6cd5\u548c\u793a\u4f8b\u4ee3\u7801\uff0c\u4ee5\u5e2e\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3\u548c\u5b9e\u73b0\u8fd9\u4e00\u529f\u80fd\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u67e5\u770b\u7d22\u5f15\u503c<\/p>\n<\/p>\n<p><p>\u5d4c\u5957\u5faa\u73af\u662f\u67e5\u770bPython\u5217\u8868\u4e2d\u7684\u5217\u8868\u7684\u7d22\u5f15\u503c\u7684\u5e38\u7528\u65b9\u6cd5\u4e4b\u4e00\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5916\u5c42\u5faa\u73af\u904d\u5386\u4e3b\u5217\u8868\uff0c\u7136\u540e\u4f7f\u7528\u5185\u5c42\u5faa\u73af\u904d\u5386\u6bcf\u4e2a\u5b50\u5217\u8868\uff0c\u5e76\u4f7f\u7528enumerate\u51fd\u6570\u6765\u83b7\u53d6\u6bcf\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u503c\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u793a\u4f8b\u4ee3\u7801<\/p>\n<p>nested_list = [<\/p>\n<p>    [1, 2, 3],<\/p>\n<p>    [4, 5, 6],<\/p>\n<p>    [7, 8, 9]<\/p>\n<p>]<\/p>\n<p>for i, sublist in enumerate(nested_list):<\/p>\n<p>    for j, element in enumerate(sublist):<\/p>\n<p>        print(f&#39;Index ({i}, {j}) - Value: {element}&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u5916\u5c42\u5faa\u73af\u904d\u5386\u4e3b\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5b50\u5217\u8868\uff0c\u5185\u5c42\u5faa\u73af\u904d\u5386\u5b50\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\uff0c\u5e76\u4f7f\u7528enumerate\u51fd\u6570\u6765\u83b7\u53d6\u6bcf\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u503c\u3002\u6700\u7ec8\uff0c\u6211\u4eec\u5c06\u7d22\u5f15\u503c\u548c\u5143\u7d20\u7684\u503c\u6253\u5370\u51fa\u6765\u3002<\/p>\n<\/p>\n<p><p>\u4e8c\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f<\/p>\n<\/p>\n<p><p>\u5217\u8868\u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u7b80\u6d01\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u65b0\u7684\u5217\u8868\u6216\u8fdb\u884c\u67d0\u4e9b\u64cd\u4f5c\u3002\u5728\u67e5\u770bPython\u5217\u8868\u4e2d\u7684\u5217\u8868\u7684\u7d22\u5f15\u503c\u65f6\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u6765\u7b80\u5316\u4ee3\u7801\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u793a\u4f8b\u4ee3\u7801<\/p>\n<p>nested_list = [<\/p>\n<p>    [1, 2, 3],<\/p>\n<p>    [4, 5, 6],<\/p>\n<p>    [7, 8, 9]<\/p>\n<p>]<\/p>\n<p>index_values = [(i, j, element) for i, sublist in enumerate(nested_list) for j, element in enumerate(sublist)]<\/p>\n<p>for index_value in index_values:<\/p>\n<p>    print(f&#39;Index ({index_value[0]}, {index_value[1]}) - Value: {index_value[2]}&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u7d22\u5f15\u548c\u503c\u7684\u5143\u7ec4\u7684\u5217\u8868\uff0c\u7136\u540e\u904d\u5386\u8fd9\u4e2a\u5217\u8868\u5e76\u6253\u5370\u6bcf\u4e2a\u5143\u7ec4\u7684\u5185\u5bb9\u3002<\/p>\n<\/p>\n<p><p>\u4e09\u3001\u4f7f\u7528numpy\u5e93<\/p>\n<\/p>\n<p><p>\u5982\u679c\u4f60\u9700\u8981\u5904\u7406\u5927\u578b\u7684\u591a\u7ef4\u6570\u7ec4\uff0cnumpy\u5e93\u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\u3002\u5b83\u63d0\u4f9b\u4e86\u8bb8\u591a\u65b9\u4fbf\u7684\u65b9\u6cd5\u6765\u64cd\u4f5c\u6570\u7ec4\uff0c\u5305\u62ec\u67e5\u770b\u7d22\u5f15\u503c\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u793a\u4f8b\u4ee3\u7801<\/p>\n<p>import numpy as np<\/p>\n<p>nested_list = [<\/p>\n<p>    [1, 2, 3],<\/p>\n<p>    [4, 5, 6],<\/p>\n<p>    [7, 8, 9]<\/p>\n<p>]<\/p>\n<p>np_array = np.array(nested_list)<\/p>\n<p>for index, value in np.ndenumerate(np_array):<\/p>\n<p>    print(f&#39;Index {index} - Value: {value}&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528numpy\u5e93\u5c06\u5d4c\u5957\u5217\u8868\u8f6c\u6362\u4e3anumpy\u6570\u7ec4\uff0c\u5e76\u4f7f\u7528np.ndenumerate\u51fd\u6570\u6765\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u53ca\u5176\u7d22\u5f15\u503c\u3002<\/p>\n<\/p>\n<p><p>\u56db\u3001\u4f7f\u7528pandas\u5e93<\/p>\n<\/p>\n<p><p>pandas\u5e93\u662f\u6570\u636e\u5206\u6790\u548c\u64cd\u4f5c\u7684\u5f3a\u5927\u5de5\u5177\uff0c\u5b83\u4e5f\u53ef\u4ee5\u7528\u4e8e\u67e5\u770bPython\u5217\u8868\u4e2d\u7684\u5217\u8868\u7684\u7d22\u5f15\u503c\u3002\u4f7f\u7528pandas\u5e93\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u5d4c\u5957\u5217\u8868\u8f6c\u6362\u4e3aDataFrame\uff0c\u7136\u540e\u4f7f\u7528DataFrame\u7684stack\u65b9\u6cd5\u6765\u83b7\u53d6\u7d22\u5f15\u548c\u503c\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u793a\u4f8b\u4ee3\u7801<\/p>\n<p>import pandas as pd<\/p>\n<p>nested_list = [<\/p>\n<p>    [1, 2, 3],<\/p>\n<p>    [4, 5, 6],<\/p>\n<p>    [7, 8, 9]<\/p>\n<p>]<\/p>\n<p>df = pd.DataFrame(nested_list)<\/p>\n<p>stacked = df.stack()<\/p>\n<p>for index, value in stacked.items():<\/p>\n<p>    print(f&#39;Index {index} - Value: {value}&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528pandas\u5e93\u5c06\u5d4c\u5957\u5217\u8868\u8f6c\u6362\u4e3aDataFrame\uff0c\u5e76\u4f7f\u7528stack\u65b9\u6cd5\u5c06DataFrame\u8f6c\u6362\u4e3aSeries\uff0c\u7136\u540e\u904d\u5386Series\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u53ca\u5176\u7d22\u5f15\u503c\u3002<\/p>\n<\/p>\n<p><p>\u4e94\u3001\u603b\u7ed3<\/p>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u67e5\u770b\u5217\u8868\u4e2d\u7684\u5217\u8868\u7684\u7d22\u5f15\u503c\uff0c\u5305\u62ec\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u3001numpy\u5e93\u548cpandas\u5e93\u7b49\u3002\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u9700\u6c42\u548c\u6570\u636e\u89c4\u6a21\u3002<\/p>\n<\/p>\n<p><p>\u5d4c\u5957\u5faa\u73af\u662f\u6700\u5e38\u89c1\u548c\u76f4\u89c2\u7684\u65b9\u6cd5\uff0c\u9002\u7528\u4e8e\u5c0f\u89c4\u6a21\u7684\u6570\u636e\u3002\u5217\u8868\u63a8\u5bfc\u5f0f\u53ef\u4ee5\u7b80\u5316\u4ee3\u7801\uff0c\u4f7f\u5176\u66f4\u4e3a\u7b80\u6d01\u3002numpy\u5e93\u9002\u7528\u4e8e\u5904\u7406\u5927\u578b\u591a\u7ef4\u6570\u7ec4\uff0c\u5e76\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u7ec4\u64cd\u4f5c\u529f\u80fd\u3002pandas\u5e93\u5219\u662f\u6570\u636e\u5206\u6790\u548c\u64cd\u4f5c\u7684\u5f3a\u5927\u5de5\u5177\uff0c\u9002\u7528\u4e8e\u6570\u636e\u79d1\u5b66\u548c\u5206\u6790\u9886\u57df\u3002<\/p>\n<\/p>\n<p><p>\u65e0\u8bba\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\uff0c\u5173\u952e\u5728\u4e8e\u7406\u89e3\u6bcf\u4e2a\u65b9\u6cd5\u7684\u539f\u7406\u548c\u9002\u7528\u573a\u666f\uff0c\u5e76\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u67e5\u770bPython\u5217\u8868\u4e2d\u7684\u5217\u8868\u7684\u7d22\u5f15\u503c\u3002\u5e0c\u671b\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u4f60\u80fd\u591f\u66f4\u597d\u5730\u7406\u89e3\u548c\u638c\u63e1\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u63d0\u5347Python\u7f16\u7a0b\u7684\u6280\u80fd\u548c\u6548\u7387\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u67e5\u770b\u5d4c\u5957\u5217\u8868\u7684\u5143\u7d20\u7d22\u5f15\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u5d4c\u5957\u5217\u8868\u662f\u4e00\u4e2a\u5217\u8868\u5185\u5305\u542b\u5176\u4ed6\u5217\u8868\u3002\u8981\u67e5\u770b\u5d4c\u5957\u5217\u8868\u4e2d\u5143\u7d20\u7684\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528for\u5faa\u73af\u7ed3\u5408enumerate\u51fd\u6570\u3002\u4f8b\u5982\uff0c\u4f7f\u7528<code>for index, sublist in enumerate(nested_list)<\/code>\u53ef\u4ee5\u83b7\u53d6\u6bcf\u4e2a\u5b50\u5217\u8868\u53ca\u5176\u7d22\u5f15\u503c\u3002\u7136\u540e\uff0c\u518d\u901a\u8fc7\u5728\u5b50\u5217\u8868\u4e2d\u4f7f\u7528index\u65b9\u6cd5\u6765\u67e5\u627e\u7279\u5b9a\u5143\u7d20\u7684\u7d22\u5f15\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\uff0c\u5982\u4f55\u8bbf\u95ee\u548c\u4fee\u6539\u5d4c\u5957\u5217\u8868\u4e2d\u7684\u5143\u7d20\uff1f<\/strong><br \/>\u8981\u8bbf\u95ee\u5d4c\u5957\u5217\u8868\u4e2d\u7684\u7279\u5b9a\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u53cc\u5c42\u7d22\u5f15\u3002\u4f8b\u5982\uff0c<code>nested_list[i][j]<\/code>\u53ef\u4ee5\u8bbf\u95ee\u7b2ci\u4e2a\u5b50\u5217\u8868\u4e2d\u7684\u7b2cj\u4e2a\u5143\u7d20\u3002\u5982\u679c\u9700\u8981\u4fee\u6539\u67d0\u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u76f4\u63a5\u8fdb\u884c\u8d4b\u503c\uff0c\u4f8b\u5982<code>nested_list[i][j] = new_value<\/code>\u3002\u8fd9\u79cd\u65b9\u5f0f\u8ba9\u4f60\u53ef\u4ee5\u7075\u6d3b\u5730\u64cd\u4f5c\u5d4c\u5957\u7ed3\u6784\u4e2d\u7684\u6570\u636e\u3002<\/p>\n<p><strong>\u662f\u5426\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u6765\u5904\u7406\u5d4c\u5957\u5217\u8868\uff1f<\/strong><br \/>\u5217\u8868\u63a8\u5bfc\u5f0f\u5728\u5904\u7406\u5d4c\u5957\u5217\u8868\u65f6\u975e\u5e38\u65b9\u4fbf\u3002\u53ef\u4ee5\u7528\u5b83\u6765\u904d\u5386\u5b50\u5217\u8868\u5e76\u751f\u6210\u65b0\u7684\u5217\u8868\u3002\u4f8b\u5982\uff0c<code>[item for sublist in nested_list for item in sublist]<\/code>\u53ef\u4ee5\u5c06\u5d4c\u5957\u5217\u8868\u5c55\u5e73\u4e3a\u4e00\u4e2a\u5355\u4e00\u7684\u5217\u8868\u3002\u8fd9\u6837\u53ef\u4ee5\u5728\u4fdd\u6301\u4ee3\u7801\u7b80\u6d01\u7684\u540c\u65f6\u9ad8\u6548\u5730\u64cd\u4f5c\u6570\u636e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u8981\u67e5\u770bPython\u5217\u8868\u4e2d\u7684\u5217\u8868\u7684\u7d22\u5f15\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u5faa\u73af\u904d\u5386\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u4ee5\u53ca\u5185\u7f6e\u51fd\u6570\u7b49\u3002 \u5176\u4e2d\u4e00\u79cd\u5e38 [&hellip;]","protected":false},"author":3,"featured_media":1116720,"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\/1116717"}],"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=1116717"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1116717\/revisions"}],"predecessor-version":[{"id":1116721,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1116717\/revisions\/1116721"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1116720"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1116717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1116717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1116717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}