{"id":1114755,"date":"2025-01-08T18:00:26","date_gmt":"2025-01-08T10:00:26","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1114755.html"},"modified":"2025-01-08T18:00:28","modified_gmt":"2025-01-08T10:00:28","slug":"python%e5%a6%82%e4%bd%95%e8%be%93%e5%87%ba%e7%9f%a9%e9%98%b5%e6%9f%90%e4%b8%aa%e4%bd%8d%e7%bd%ae%e7%9a%84%e6%95%b0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1114755.html","title":{"rendered":"python\u5982\u4f55\u8f93\u51fa\u77e9\u9635\u67d0\u4e2a\u4f4d\u7f6e\u7684\u6570"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25075810\/c679a82d-21a1-48f1-a743-746c816d7fe8.webp\" alt=\"python\u5982\u4f55\u8f93\u51fa\u77e9\u9635\u67d0\u4e2a\u4f4d\u7f6e\u7684\u6570\" \/><\/p>\n<p><p> <strong>\u4f7f\u7528Python\u8f93\u51fa\u77e9\u9635\u67d0\u4e2a\u4f4d\u7f6e\u7684\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528numpy\u5e93\u3001\u5217\u8868\u5d4c\u5957\u6216pandas\u5e93\u6765\u5b9e\u73b0\u3001numpy\u5e93\u529f\u80fd\u5f3a\u5927\u3001\u5217\u8868\u5d4c\u5957\u7b80\u4fbf\u6613\u7528\u3001pandas\u5e93\u9002\u5408\u5904\u7406\u6570\u636e\u8868\u7ed3\u6784\u3002<\/strong> \u5176\u4e2d\uff0cnumpy\u5e93\u662f\u4e00\u79cd\u529f\u80fd\u5f3a\u5927\u7684\u6570\u503c\u8ba1\u7b97\u5e93\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u521b\u5efa\u548c\u64cd\u4f5c\u591a\u7ef4\u6570\u7ec4\uff1b\u5217\u8868\u5d4c\u5957\u662f\u6700\u57fa\u7840\u7684\u65b9\u6cd5\uff0c\u7b80\u5355\u6613\u61c2\uff1bpandas\u5e93\u5219\u9002\u5408\u5904\u7406\u6570\u636e\u8868\u7ed3\u6784\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u8fdb\u884c\u6570\u636e\u5206\u6790\u548c\u64cd\u4f5c\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63cf\u8ff0\u4f7f\u7528numpy\u5e93\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><p>\u4f7f\u7528numpy\u5e93\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u8bbf\u95ee\u77e9\u9635\u4e2d\u7684\u5143\u7d20\u3002\u4ee5\u4e00\u4e2a2D\u77e9\u9635\u4e3a\u4f8b\uff0c\u9996\u5148\u9700\u8981\u5bfc\u5165numpy\u5e93\uff0c\u7136\u540e\u521b\u5efa\u4e00\u4e2a\u77e9\u9635\uff0c\u6700\u540e\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u77e9\u9635\u4e2d\u7684\u67d0\u4e2a\u5143\u7d20\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<h2><strong>\u521b\u5efa\u4e00\u4e2a2D\u77e9\u9635<\/strong><\/h2>\n<p>matrix = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])<\/p>\n<h2><strong>\u8f93\u51fa\u77e9\u9635\u4e2d\u67d0\u4e2a\u4f4d\u7f6e\u7684\u6570<\/strong><\/h2>\n<p>row_index = 1<\/p>\n<p>col_index = 2<\/p>\n<p>print(matrix[row_index, col_index])  # \u8f93\u51fa\u7ed3\u679c\u4e3a6<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u8bb2\u89e3\u4f7f\u7528numpy\u5e93\u3001\u5217\u8868\u5d4c\u5957\u548cpandas\u5e93\u6765\u8f93\u51fa\u77e9\u9635\u67d0\u4e2a\u4f4d\u7f6e\u7684\u6570\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<h2><strong>\u4e00\u3001NUMPY\u5e93<\/strong><\/h2>\n<p><h2>1\u3001\u5b89\u88c5\u548c\u5bfc\u5165numpy\u5e93<\/h2>\n<\/p>\n<p><p>\u9996\u5148\uff0c\u786e\u4fdd\u5df2\u5b89\u88c5numpy\u5e93\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\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\u5728Python\u4ee3\u7801\u4e2d\u5bfc\u5165numpy\u5e93\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>2\u3001\u521b\u5efa\u77e9\u9635<\/h2>\n<\/p>\n<p><p>\u53ef\u4ee5\u4f7f\u7528numpy\u7684array\u51fd\u6570\u521b\u5efa\u4e00\u4e2a2D\u77e9\u9635\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">matrix = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>3\u3001\u8bbf\u95ee\u77e9\u9635\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n<p><p>\u901a\u8fc7\u6307\u5b9a\u884c\u548c\u5217\u7684\u7d22\u5f15\u6765\u8bbf\u95ee\u77e9\u9635\u4e2d\u7684\u5143\u7d20\u3002\u7d22\u5f15\u4ece0\u5f00\u59cb\u3002\u4f8b\u5982\uff0c\u8bbf\u95ee\u7b2c2\u884c\u7b2c3\u5217\u7684\u5143\u7d20\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">row_index = 1<\/p>\n<p>col_index = 2<\/p>\n<p>print(matrix[row_index, col_index])  # \u8f93\u51fa\u7ed3\u679c\u4e3a6<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>4\u3001\u4fee\u6539\u77e9\u9635\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n<p><p>\u8fd8\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u4fee\u6539\u77e9\u9635\u4e2d\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u5c06\u7b2c1\u884c\u7b2c2\u5217\u7684\u5143\u7d20\u4fee\u6539\u4e3a10\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">matrix[0, 1] = 10<\/p>\n<p>print(matrix)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<\/p>\n<p><pre><code>[[ 1 10  3]<\/p>\n<p> [ 4  5  6]<\/p>\n<p> [ 7  8  9]]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<h2><strong>\u4e8c\u3001\u5217\u8868\u5d4c\u5957<\/strong><\/h2>\n<p><h2>1\u3001\u521b\u5efa\u77e9\u9635<\/h2>\n<\/p>\n<p><p>\u4f7f\u7528\u5217\u8868\u5d4c\u5957\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a2D\u77e9\u9635\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">matrix = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>2\u3001\u8bbf\u95ee\u77e9\u9635\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n<p><p>\u901a\u8fc7\u6307\u5b9a\u884c\u548c\u5217\u7684\u7d22\u5f15\u6765\u8bbf\u95ee\u77e9\u9635\u4e2d\u7684\u5143\u7d20\u3002\u7d22\u5f15\u4ece0\u5f00\u59cb\u3002\u4f8b\u5982\uff0c\u8bbf\u95ee\u7b2c2\u884c\u7b2c3\u5217\u7684\u5143\u7d20\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">row_index = 1<\/p>\n<p>col_index = 2<\/p>\n<p>print(matrix[row_index][col_index])  # \u8f93\u51fa\u7ed3\u679c\u4e3a6<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>3\u3001\u4fee\u6539\u77e9\u9635\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n<p><p>\u8fd8\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u4fee\u6539\u77e9\u9635\u4e2d\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u5c06\u7b2c1\u884c\u7b2c2\u5217\u7684\u5143\u7d20\u4fee\u6539\u4e3a10\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">matrix[0][1] = 10<\/p>\n<p>print(matrix)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<\/p>\n<p><pre><code>[[1, 10, 3], [4, 5, 6], [7, 8, 9]]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<h2><strong>\u4e09\u3001PANDAS\u5e93<\/strong><\/h2>\n<p><h2>1\u3001\u5b89\u88c5\u548c\u5bfc\u5165pandas\u5e93<\/h2>\n<\/p>\n<p><p>\u9996\u5148\uff0c\u786e\u4fdd\u5df2\u5b89\u88c5pandas\u5e93\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u884c\u5b89\u88c5\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-bash\">pip install pandas<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u5728Python\u4ee3\u7801\u4e2d\u5bfc\u5165pandas\u5e93\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>2\u3001\u521b\u5efa\u77e9\u9635<\/h2>\n<\/p>\n<p><p>\u53ef\u4ee5\u4f7f\u7528pandas\u7684DataFrame\u51fd\u6570\u521b\u5efa\u4e00\u4e2a2D\u77e9\u9635\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">matrix = pd.DataFrame([[1, 2, 3], [4, 5, 6], [7, 8, 9]], columns=[&#39;A&#39;, &#39;B&#39;, &#39;C&#39;])<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>3\u3001\u8bbf\u95ee\u77e9\u9635\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n<p><p>\u901a\u8fc7\u6307\u5b9a\u884c\u548c\u5217\u7684\u7d22\u5f15\u6765\u8bbf\u95ee\u77e9\u9635\u4e2d\u7684\u5143\u7d20\u3002\u7d22\u5f15\u4ece0\u5f00\u59cb\u3002\u4f8b\u5982\uff0c\u8bbf\u95ee\u7b2c2\u884c\u7b2c3\u5217\u7684\u5143\u7d20\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">row_index = 1<\/p>\n<p>col_index = &#39;C&#39;<\/p>\n<p>print(matrix.iloc[row_index][col_index])  # \u8f93\u51fa\u7ed3\u679c\u4e3a6<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>4\u3001\u4fee\u6539\u77e9\u9635\u4e2d\u7684\u5143\u7d20<\/h2>\n<\/p>\n<p><p>\u8fd8\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u4fee\u6539\u77e9\u9635\u4e2d\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u5c06\u7b2c1\u884c\u7b2c2\u5217\u7684\u5143\u7d20\u4fee\u6539\u4e3a10\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">matrix.iloc[0, 1] = 10<\/p>\n<p>print(matrix)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<\/p>\n<p><pre><code>   A   B  C<\/p>\n<p>0  1  10  3<\/p>\n<p>1  4   5  6<\/p>\n<p>2  7   8  9<\/p>\n<p><\/code><\/pre>\n<\/p>\n<h2><strong>\u56db\u3001\u603b\u7ed3<\/strong><\/h2>\n<p><p>\u901a\u8fc7\u4ee5\u4e0a\u4e09\u79cd\u65b9\u6cd5\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u8f93\u51fa\u548c\u4fee\u6539\u77e9\u9635\u4e2d\u7684\u5143\u7d20\u3002<strong>\u4f7f\u7528numpy\u5e93\u3001\u5217\u8868\u5d4c\u5957\u548cpandas\u5e93\u5404\u6709\u4f18\u52a3\uff0cnumpy\u5e93\u529f\u80fd\u5f3a\u5927\uff0c\u9002\u5408\u6570\u503c\u8ba1\u7b97\uff0c\u5217\u8868\u5d4c\u5957\u7b80\u4fbf\u6613\u7528\uff0c\u9002\u5408\u521d\u5b66\u8005\uff0cpandas\u5e93\u9002\u5408\u5904\u7406\u6570\u636e\u8868\u7ed3\u6784\uff0c\u4fbf\u4e8e\u6570\u636e\u5206\u6790\u3002<\/strong> \u6839\u636e\u5177\u4f53\u9700\u6c42\uff0c\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u64cd\u4f5c\u77e9\u9635\uff0c\u80fd\u591f\u63d0\u9ad8\u4ee3\u7801\u7684\u6548\u7387\u548c\u53ef\u8bfb\u6027\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u521b\u5efa\u4e00\u4e2a\u77e9\u9635\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\uff08list\uff09\u6765\u521b\u5efa\u4e00\u4e2a\u77e9\u9635\u3002\u901a\u5e38\uff0c\u77e9\u9635\u88ab\u8868\u793a\u4e3a\u4e00\u4e2a\u4e8c\u7ef4\u5217\u8868\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u521b\u5efa\u4e00\u4e2a3&#215;3\u7684\u77e9\u9635\uff1a  <\/p>\n<pre><code class=\"language-python\">matrix = [\n    [1, 2, 3],\n    [4, 5, 6],\n    [7, 8, 9]\n]\n<\/code><\/pre>\n<p>\u4f60\u8fd8\u53ef\u4ee5\u4f7f\u7528NumPy\u5e93\u6765\u521b\u5efa\u548c\u64cd\u4f5c\u77e9\u9635\uff0c\u5b83\u63d0\u4f9b\u4e86\u66f4\u5f3a\u5927\u7684\u529f\u80fd\u548c\u66f4\u9ad8\u7684\u6548\u7387\u3002\u4f7f\u7528NumPy\u521b\u5efa\u77e9\u9635\u7684\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n<pre><code class=\"language-python\">import numpy as np\nmatrix = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])\n<\/code><\/pre>\n<p><strong>\u5982\u4f55\u8bbf\u95ee\u77e9\u9635\u4e2d\u7684\u7279\u5b9a\u5143\u7d20\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u8bbf\u95ee\u77e9\u9635\u4e2d\u7279\u5b9a\u4f4d\u7f6e\u7684\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u5b9e\u73b0\u3002\u5bf9\u4e8e\u5217\u8868\u8868\u793a\u7684\u77e9\u9635\uff0c\u4f7f\u7528<code>matrix[row][column]<\/code>\u7684\u65b9\u5f0f\u83b7\u53d6\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u8981\u83b7\u53d6\u4e0a\u9762\u77e9\u9635\u4e2d\u7b2c\u4e8c\u884c\u7b2c\u4e09\u5217\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u8fd9\u6837\u5199\uff1a  <\/p>\n<pre><code class=\"language-python\">element = matrix[1][2]  # \u8f93\u51fa\u7ed3\u679c\u4e3a6\n<\/code><\/pre>\n<p>\u5982\u679c\u4f7f\u7528NumPy\uff0c\u8bbf\u95ee\u5143\u7d20\u7684\u65b9\u5f0f\u7a0d\u6709\u4e0d\u540c\uff0c\u53ef\u4ee5\u4f7f\u7528<code>matrix[row, column]<\/code>\uff1a  <\/p>\n<pre><code class=\"language-python\">element = matrix[1, 2]  # \u8f93\u51fa\u7ed3\u679c\u4e3a6\n<\/code><\/pre>\n<p><strong>\u5982\u4f55\u5904\u7406\u77e9\u9635\u8d8a\u754c\u9519\u8bef\uff1f<\/strong><br \/>\u5728\u8bbf\u95ee\u77e9\u9635\u5143\u7d20\u65f6\uff0c\u786e\u4fdd\u7d22\u5f15\u5728\u5408\u6cd5\u8303\u56f4\u5185\uff0c\u4ee5\u907f\u514d\u5f15\u53d1\u7d22\u5f15\u9519\u8bef\u3002\u53ef\u4ee5\u901a\u8fc7\u68c0\u67e5\u884c\u548c\u5217\u7684\u7d22\u5f15\u662f\u5426\u5728\u77e9\u9635\u7684\u5927\u5c0f\u8303\u56f4\u5185\u6765\u9632\u6b62\u8d8a\u754c\u3002\u4f8b\u5982\uff1a  <\/p>\n<pre><code class=\"language-python\">row_index = 2\ncolumn_index = 3\nif row_index &lt; len(matrix) and column_index &lt; len(matrix[0]):\n    element = matrix[row_index][column_index]\nelse:\n    print(&quot;\u7d22\u5f15\u8d85\u51fa\u77e9\u9635\u8303\u56f4&quot;)\n<\/code><\/pre>\n<p>\u4f7f\u7528NumPy\u65f6\uff0c\u8d8a\u754c\u8bbf\u95ee\u4e5f\u4f1a\u5f15\u53d1\u9519\u8bef\uff0c\u56e0\u6b64\u540c\u6837\u9700\u8981\u8fdb\u884c\u7d22\u5f15\u8303\u56f4\u7684\u68c0\u67e5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u4f7f\u7528Python\u8f93\u51fa\u77e9\u9635\u67d0\u4e2a\u4f4d\u7f6e\u7684\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528numpy\u5e93\u3001\u5217\u8868\u5d4c\u5957\u6216pandas\u5e93\u6765\u5b9e\u73b0\u3001numpy\u5e93\u529f\u80fd\u5f3a [&hellip;]","protected":false},"author":3,"featured_media":1114757,"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\/1114755"}],"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=1114755"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1114755\/revisions"}],"predecessor-version":[{"id":1114759,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1114755\/revisions\/1114759"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1114757"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1114755"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1114755"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1114755"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}