{"id":975002,"date":"2024-12-27T06:09:43","date_gmt":"2024-12-26T22:09:43","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/975002.html"},"modified":"2024-12-27T06:09:45","modified_gmt":"2024-12-26T22:09:45","slug":"python%e5%a6%82%e4%bd%95%e8%af%bb%e5%8f%96%e6%95%b0%e6%8d%ae%e9%9b%86","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/975002.html","title":{"rendered":"python\u5982\u4f55\u8bfb\u53d6\u6570\u636e\u96c6"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24200438\/f2d67bf3-8505-4be3-9054-88708adc0e6e.webp\" alt=\"python\u5982\u4f55\u8bfb\u53d6\u6570\u636e\u96c6\" \/><\/p>\n<p><p> <strong>Python\u8bfb\u53d6\u6570\u636e\u96c6\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff0c\u5982\u4f7f\u7528Pandas\u5e93\u8bfb\u53d6CSV\u6587\u4ef6\u3001\u4f7f\u7528Numpy\u8bfb\u53d6\u6587\u672c\u6587\u4ef6\u3001\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u6570\u636e\u3001\u4f7f\u7528Scikit-learn\u52a0\u8f7d\u5185\u7f6e\u6570\u636e\u96c6\u3001\u8bfb\u53d6Excel\u6587\u4ef6\u7b49\u3002\u5177\u4f53\u65b9\u5f0f\u53d6\u51b3\u4e8e\u6570\u636e\u96c6\u7684\u683c\u5f0f\u548c\u5b58\u50a8\u4f4d\u7f6e\u3002<\/strong>\u5728\u8fd9\u4e9b\u65b9\u6cd5\u4e2d\uff0cPandas\u5e93\u8bfb\u53d6CSV\u6587\u4ef6\u6700\u4e3a\u5e38\u7528\uff0c\u56e0\u4e3aCSV\u683c\u5f0f\u662f\u6570\u636e\u79d1\u5b66\u4e2d\u6700\u5e38\u89c1\u7684\u6570\u636e\u5b58\u50a8\u683c\u5f0f\u4e4b\u4e00\u3002\u4f7f\u7528Pandas\u8bfb\u53d6CSV\u6587\u4ef6\u4e0d\u4ec5\u7b80\u5355\uff0c\u800c\u4e14\u80fd\u591f\u5feb\u901f\u5904\u7406\u548c\u5206\u6790\u6570\u636e\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u8bfb\u53d6\u6570\u636e\u96c6\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001\u4f7f\u7528Pandas\u8bfb\u53d6CSV\u6587\u4ef6<\/p>\n<\/p>\n<p><p>Pandas\u662fPython\u4e2d\u6700\u6d41\u884c\u7684\u6570\u636e\u5904\u7406\u5e93\u4e4b\u4e00\u3002\u5b83\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u636e\u64cd\u4f5c\u548c\u5206\u6790\u529f\u80fd\uff0c\u5c24\u5176\u9002\u7528\u4e8e\u8868\u683c\u6570\u636e\u3002\u8981\u4f7f\u7528Pandas\u8bfb\u53d6CSV\u6587\u4ef6\uff0c\u9996\u5148\u9700\u8981\u786e\u4fdd\u5df2\u5b89\u88c5Pandas\u5e93\uff0c\u53ef\u4ee5\u901a\u8fc7pip\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>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u6765\u770b\u5982\u4f55\u4f7f\u7528Pandas\u8bfb\u53d6CSV\u6587\u4ef6\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<h2><strong>\u8bfb\u53d6CSV\u6587\u4ef6<\/strong><\/h2>\n<p>data = pd.read_csv(&#39;data.csv&#39;)<\/p>\n<h2><strong>\u67e5\u770b\u524d\u51e0\u884c\u6570\u636e<\/strong><\/h2>\n<p>print(data.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c<code>pd.read_csv()<\/code>\u51fd\u6570\u7528\u4e8e\u8bfb\u53d6CSV\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u4e3aDataFrame\u5bf9\u8c61\u3002DataFrame\u662fPandas\u4e2d\u6700\u91cd\u8981\u7684\u6570\u636e\u7ed3\u6784\u4e4b\u4e00\uff0c\u5b83\u7c7b\u4f3c\u4e8eExcel\u4e2d\u7684\u8868\u683c\u3002<code>data.head()<\/code>\u65b9\u6cd5\u7528\u4e8e\u67e5\u770bDataFrame\u7684\u524d\u4e94\u884c\u6570\u636e\uff0c\u8fd9\u5bf9\u4e8e\u68c0\u67e5\u6570\u636e\u662f\u5426\u6b63\u786e\u8bfb\u53d6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n<p><p>\u4e8c\u3001\u4f7f\u7528Numpy\u8bfb\u53d6\u6587\u672c\u6587\u4ef6<\/p>\n<\/p>\n<p><p>Numpy\u662fPython\u4e2d\u53e6\u4e00\u4e2a\u91cd\u8981\u7684\u79d1\u5b66\u8ba1\u7b97\u5e93\uff0c\u9002\u7528\u4e8e\u6570\u503c\u8ba1\u7b97\u548c\u6570\u7ec4\u64cd\u4f5c\u3002\u5b83\u53ef\u4ee5\u7528\u4e8e\u8bfb\u53d6\u7b80\u5355\u7684\u6587\u672c\u6587\u4ef6\u3002\u9996\u5148\u9700\u8981\u5b89\u88c5Numpy\u5e93\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-bash\">pip install numpy<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u7136\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u8bfb\u53d6\u6587\u672c\u6587\u4ef6\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<h2><strong>\u8bfb\u53d6\u6587\u672c\u6587\u4ef6<\/strong><\/h2>\n<p>data = np.loadtxt(&#39;data.txt&#39;, delimiter=&#39;,&#39;)<\/p>\n<h2><strong>\u67e5\u770b\u6570\u636e<\/strong><\/h2>\n<p>print(data)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><code>np.loadtxt()<\/code>\u51fd\u6570\u7528\u4e8e\u8bfb\u53d6\u6587\u672c\u6587\u4ef6\uff0c\u5176\u4e2d<code>delimiter<\/code>\u53c2\u6570\u7528\u4e8e\u6307\u5b9a\u6587\u4ef6\u4e2d\u7684\u5206\u9694\u7b26\u3002\u5728\u8bfb\u53d6\u6587\u672c\u6587\u4ef6\u65f6\uff0cNumpy\u4f1a\u5c06\u6570\u636e\u5b58\u50a8\u4e3a\u591a\u7ef4\u6570\u7ec4\uff0c\u8fd9\u5bf9\u6570\u503c\u8fd0\u7b97\u975e\u5e38\u9ad8\u6548\u3002<\/p>\n<\/p>\n<p><p>\u4e09\u3001\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u6570\u636e<\/p>\n<\/p>\n<p><p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6570\u636e\u901a\u5e38\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\u3002\u56e0\u6b64\uff0c\u4ece\u6570\u636e\u5e93\u4e2d\u8bfb\u53d6\u6570\u636e\u4e5f\u662fPython\u8bfb\u53d6\u6570\u636e\u96c6\u7684\u91cd\u8981\u65b9\u6cd5\u4e4b\u4e00\u3002Python\u63d0\u4f9b\u4e86\u591a\u79cd\u5e93\u6765\u8fde\u63a5\u548c\u64cd\u4f5c\u6570\u636e\u5e93\uff0c\u5982sqlite3\u3001SQLAlchemy\u3001pymysql\u7b49\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528sqlite3\u8bfb\u53d6SQLite\u6570\u636e\u5e93\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import sqlite3<\/p>\n<p>import pandas as pd<\/p>\n<h2><strong>\u8fde\u63a5\u5230SQLite\u6570\u636e\u5e93<\/strong><\/h2>\n<p>conn = sqlite3.connect(&#39;database.db&#39;)<\/p>\n<h2><strong>\u6267\u884cSQL\u67e5\u8be2\u5e76\u8bfb\u53d6\u6570\u636e<\/strong><\/h2>\n<p>query = &quot;SELECT * FROM table_name&quot;<\/p>\n<p>data = pd.read_sql_query(query, conn)<\/p>\n<h2><strong>\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5<\/strong><\/h2>\n<p>conn.close()<\/p>\n<h2><strong>\u67e5\u770b\u6570\u636e<\/strong><\/h2>\n<p>print(data.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528sqlite3\u5e93\u8fde\u63a5\u5230SQLite\u6570\u636e\u5e93\uff0c\u7136\u540e\u4f7f\u7528Pandas\u7684<code>pd.read_sql_query()<\/code>\u51fd\u6570\u6267\u884cSQL\u67e5\u8be2\u5e76\u8bfb\u53d6\u6570\u636e\u3002\u6700\u540e\uff0c\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5\u5e76\u67e5\u770b\u6570\u636e\u3002<\/p>\n<\/p>\n<p><p>\u56db\u3001\u4f7f\u7528Scikit-learn\u52a0\u8f7d\u5185\u7f6e\u6570\u636e\u96c6<\/p>\n<\/p>\n<p><p>Scikit-learn\u662fPython\u4e2d\u6700\u6d41\u884c\u7684<a href=\"https:\/\/docs.pingcode.com\/ask\/59192.html\" target=\"_blank\">\u673a\u5668\u5b66\u4e60<\/a>\u5e93\u4e4b\u4e00\u3002\u5b83\u63d0\u4f9b\u4e86\u591a\u4e2a\u5185\u7f6e\u6570\u636e\u96c6\uff0c\u9002\u5408\u7528\u4e8e\u5b66\u4e60\u548c\u6d4b\u8bd5\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u52a0\u8f7d\u8fd9\u4e9b\u6570\u636e\u96c6\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from sklearn import datasets<\/p>\n<h2><strong>\u52a0\u8f7d\u9e22\u5c3e\u82b1\u6570\u636e\u96c6<\/strong><\/h2>\n<p>iris = datasets.load_iris()<\/p>\n<h2><strong>\u67e5\u770b\u6570\u636e\u7279\u5f81\u548c\u76ee\u6807<\/strong><\/h2>\n<p>X, y = iris.data, iris.target<\/p>\n<p>print(X[:5], y[:5])<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>Scikit-learn\u7684<code>datasets<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u591a\u79cd\u6570\u636e\u96c6\u52a0\u8f7d\u529f\u80fd\uff0c\u5982<code>load_iris()<\/code>\u3001<code>load_digits()<\/code>\u7b49\u3002\u52a0\u8f7d\u540e\uff0c\u6570\u636e\u901a\u5e38\u4ee5\u5b57\u5178\u5f62\u5f0f\u8fd4\u56de\uff0c\u5176\u4e2d\u5305\u542b\u7279\u5f81\u6570\u636e\u548c\u76ee\u6807\u6570\u636e\u3002<\/p>\n<\/p>\n<p><p>\u4e94\u3001\u8bfb\u53d6Excel\u6587\u4ef6<\/p>\n<\/p>\n<p><p>\u5728\u5546\u4e1a\u548c\u79d1\u5b66\u9886\u57df\uff0cExcel\u6587\u4ef6\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u6570\u636e\u5b58\u50a8\u683c\u5f0f\u3002Pandas\u5e93\u540c\u6837\u53ef\u4ee5\u7528\u4e8e\u8bfb\u53d6Excel\u6587\u4ef6\uff0c\u4f46\u9700\u8981\u5b89\u88c5<code>openpyxl<\/code>\u6216<code>xlrd<\/code>\u5e93\u4f5c\u4e3a\u4f9d\u8d56\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-bash\">pip install openpyxl<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u7136\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u8bfb\u53d6Excel\u6587\u4ef6\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<h2><strong>\u8bfb\u53d6Excel\u6587\u4ef6<\/strong><\/h2>\n<p>data = pd.read_excel(&#39;data.xlsx&#39;, sheet_name=&#39;Sheet1&#39;)<\/p>\n<h2><strong>\u67e5\u770b\u6570\u636e<\/strong><\/h2>\n<p>print(data.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c<code>pd.read_excel()<\/code>\u51fd\u6570\u7528\u4e8e\u8bfb\u53d6Excel\u6587\u4ef6\uff0c\u5176\u4e2d<code>sheet_name<\/code>\u53c2\u6570\u6307\u5b9a\u8981\u8bfb\u53d6\u7684\u5de5\u4f5c\u8868\u540d\u79f0\u3002\u8bfb\u53d6\u540e\u7684\u6570\u636e\u540c\u6837\u4ee5DataFrame\u5f62\u5f0f\u5b58\u50a8\u3002<\/p>\n<\/p>\n<p><p>\u603b\u7ed3\uff0cPython\u63d0\u4f9b\u4e86\u591a\u79cd\u8bfb\u53d6\u6570\u636e\u96c6\u7684\u65b9\u6cd5\uff0c\u5177\u4f53\u9009\u62e9\u53d6\u51b3\u4e8e\u6570\u636e\u96c6\u7684\u683c\u5f0f\u548c\u5b58\u50a8\u4f4d\u7f6e\u3002\u65e0\u8bba\u662f\u8bfb\u53d6CSV\u6587\u4ef6\u3001\u6587\u672c\u6587\u4ef6\u3001\u6570\u636e\u5e93\u3001\u5185\u7f6e\u6570\u636e\u96c6\uff0c\u8fd8\u662fExcel\u6587\u4ef6\uff0cPython\u90fd\u80fd\u9ad8\u6548\u5b8c\u6210\u4efb\u52a1\uff0c\u4ece\u800c\u4e3a\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u5960\u5b9a\u57fa\u7840\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u52a0\u8f7dCSV\u683c\u5f0f\u7684\u6570\u636e\u96c6\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528Pandas\u5e93\u6765\u65b9\u4fbf\u5730\u52a0\u8f7dCSV\u683c\u5f0f\u7684\u6570\u636e\u96c6\u3002\u9996\u5148\uff0c\u786e\u4fdd\u5df2\u5b89\u88c5Pandas\u5e93\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u52a0\u8f7dCSV\u6587\u4ef6\uff1a  <\/p>\n<pre><code class=\"language-python\">import pandas as pd\ndata = pd.read_csv(&#39;your_dataset.csv&#39;)\n<\/code><\/pre>\n<p>\u8fd9\u6837\u5c31\u53ef\u4ee5\u5c06CSV\u6587\u4ef6\u4e2d\u7684\u6570\u636e\u8bfb\u5165\u5230\u4e00\u4e2aDataFrame\u4e2d\uff0c\u65b9\u4fbf\u540e\u7eed\u7684\u6570\u636e\u5206\u6790\u548c\u5904\u7406\u3002<\/p>\n<p><strong>Python\u8bfb\u53d6Excel\u6587\u4ef6\u7684\u6b65\u9aa4\u662f\u4ec0\u4e48\uff1f<\/strong><br \/>\u5bf9\u4e8eExcel\u6587\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528Pandas\u5e93\u7684<code>read_excel<\/code>\u51fd\u6570\u3002\u786e\u4fdd\u5b89\u88c5\u4e86<code>openpyxl<\/code>\u6216<code>xlrd<\/code>\u5e93\uff0c\u4ee5\u4fbf\u652f\u6301\u8bfb\u53d6Excel\u683c\u5f0f\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n<pre><code class=\"language-python\">import pandas as pd\ndata = pd.read_excel(&#39;your_dataset.xlsx&#39;)\n<\/code><\/pre>\n<p>\u8fd9\u6837\uff0cExcel\u6587\u4ef6\u4e2d\u7684\u6570\u636e\u5c06\u88ab\u52a0\u8f7d\u5230DataFrame\u4e2d\uff0c\u7528\u6237\u53ef\u4ee5\u8f7b\u677e\u8fdb\u884c\u6570\u636e\u64cd\u4f5c\u548c\u5206\u6790\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\u5982\u4f55\u8bfb\u53d6JSON\u683c\u5f0f\u7684\u6570\u636e\u96c6\uff1f<\/strong><br \/>Python\u7684Pandas\u5e93\u540c\u6837\u652f\u6301\u8bfb\u53d6JSON\u683c\u5f0f\u7684\u6570\u636e\u96c6\u3002\u4f7f\u7528<code>read_json<\/code>\u51fd\u6570\u53ef\u4ee5\u5c06JSON\u6587\u4ef6\u4e2d\u7684\u6570\u636e\u76f4\u63a5\u52a0\u8f7d\u5230DataFrame\u4e2d\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n<pre><code class=\"language-python\">import pandas as pd\ndata = pd.read_json(&#39;your_dataset.json&#39;)\n<\/code><\/pre>\n<p>\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u7528\u6237\u53ef\u4ee5\u5feb\u901f\u5730\u5c06JSON\u683c\u5f0f\u7684\u6570\u636e\u8f6c\u6362\u4e3a\u6613\u4e8e\u64cd\u4f5c\u7684DataFrame\u683c\u5f0f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u8bfb\u53d6\u6570\u636e\u96c6\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff0c\u5982\u4f7f\u7528Pandas\u5e93\u8bfb\u53d6CSV\u6587\u4ef6\u3001\u4f7f\u7528Numpy\u8bfb\u53d6\u6587\u672c\u6587\u4ef6\u3001\u4ece [&hellip;]","protected":false},"author":3,"featured_media":975008,"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\/975002"}],"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=975002"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/975002\/revisions"}],"predecessor-version":[{"id":975010,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/975002\/revisions\/975010"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/975008"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=975002"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=975002"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=975002"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}