{"id":1094081,"date":"2025-01-08T14:37:33","date_gmt":"2025-01-08T06:37:33","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1094081.html"},"modified":"2025-01-08T14:37:35","modified_gmt":"2025-01-08T06:37:35","slug":"python%e5%a6%82%e4%bd%95%e5%b0%86%e6%95%b0%e6%8d%ae%e9%9b%86%e8%bf%9b%e8%a1%8c%e5%af%bc%e5%85%a5-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1094081.html","title":{"rendered":"python\u5982\u4f55\u5c06\u6570\u636e\u96c6\u8fdb\u884c\u5bfc\u5165"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24210343\/d374599f-45ef-4318-b325-fc9af51033e7.webp\" alt=\"python\u5982\u4f55\u5c06\u6570\u636e\u96c6\u8fdb\u884c\u5bfc\u5165\" \/><\/p>\n<p><p> <strong>Python\u5c06\u6570\u636e\u96c6\u8fdb\u884c\u5bfc\u5165\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5e38\u89c1\u7684\u6709\u4f7f\u7528Pandas\u5e93\u3001\u4f7f\u7528Numpy\u5e93\u3001\u4f7f\u7528CSV\u6a21\u5757\u3001\u4f7f\u7528open()\u51fd\u6570\u3002<\/strong>\u5176\u4e2d\uff0c<strong>\u4f7f\u7528Pandas\u5e93<\/strong>\u662f\u6700\u4e3a\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u529f\u80fd\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Pandas\u5e93\u5c06\u6570\u636e\u96c6\u8fdb\u884c\u5bfc\u5165\uff0c\u5e76\u5206\u4eab\u5176\u4ed6\u51e0\u79cd\u5e38\u7528\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528Pandas\u5e93<\/h3>\n<\/p>\n<p><p>Pandas\u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u5e93\uff0c\u7279\u522b\u9002\u5408\u5904\u7406\u8868\u683c\u6570\u636e\u3002\u901a\u8fc7\u4f7f\u7528Pandas\u5e93\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u5c06CSV\u3001Excel\u3001JSON\u7b49\u683c\u5f0f\u7684\u6570\u636e\u96c6\u5bfc\u5165\u5230DataFrame\u4e2d\u8fdb\u884c\u5904\u7406\u3002\u4e0b\u9762\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u5bfc\u5165\u6570\u636e\u96c6\u7684\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n<p><h4>1. \u5bfc\u5165CSV\u6587\u4ef6<\/h4>\n<\/p>\n<p><p>CSV\uff08Comma-Separated Values\uff0c\u9017\u53f7\u5206\u9694\u503c\uff09\u6587\u4ef6\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u6570\u636e\u5b58\u50a8\u683c\u5f0f\u3002Pandas\u63d0\u4f9b\u4e86<code>read_csv<\/code>\u51fd\u6570\u6765\u8bfb\u53d6CSV\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3aDataFrame\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<h2><strong>\u4f7f\u7528read_csv\u51fd\u6570\u8bfb\u53d6CSV\u6587\u4ef6<\/strong><\/h2>\n<p>df = pd.read_csv(&#39;path\/to\/your\/file.csv&#39;)<\/p>\n<h2><strong>\u663e\u793a\u6570\u636e\u96c6\u7684\u524d\u4e94\u884c<\/strong><\/h2>\n<p>print(df.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u5bfc\u5165Excel\u6587\u4ef6<\/h4>\n<\/p>\n<p><p>Excel\u6587\u4ef6\u4e5f\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u6570\u636e\u5b58\u50a8\u683c\u5f0f\u3002Pandas\u63d0\u4f9b\u4e86<code>read_excel<\/code>\u51fd\u6570\u6765\u8bfb\u53d6Excel\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3aDataFrame\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<h2><strong>\u4f7f\u7528read_excel\u51fd\u6570\u8bfb\u53d6Excel\u6587\u4ef6<\/strong><\/h2>\n<p>df = pd.read_excel(&#39;path\/to\/your\/file.xlsx&#39;)<\/p>\n<h2><strong>\u663e\u793a\u6570\u636e\u96c6\u7684\u524d\u4e94\u884c<\/strong><\/h2>\n<p>print(df.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>3. \u5bfc\u5165JSON\u6587\u4ef6<\/h4>\n<\/p>\n<p><p>JSON\uff08JavaScript Object Notation\uff09\u6587\u4ef6\u662f\u4e00\u79cd\u8f7b\u91cf\u7ea7\u7684\u6570\u636e\u4ea4\u6362\u683c\u5f0f\u3002Pandas\u63d0\u4f9b\u4e86<code>read_json<\/code>\u51fd\u6570\u6765\u8bfb\u53d6JSON\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3aDataFrame\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<h2><strong>\u4f7f\u7528read_json\u51fd\u6570\u8bfb\u53d6JSON\u6587\u4ef6<\/strong><\/h2>\n<p>df = pd.read_json(&#39;path\/to\/your\/file.json&#39;)<\/p>\n<h2><strong>\u663e\u793a\u6570\u636e\u96c6\u7684\u524d\u4e94\u884c<\/strong><\/h2>\n<p>print(df.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e8c\u3001\u4f7f\u7528Numpy\u5e93<\/h3>\n<\/p>\n<p><p>Numpy\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u503c\u8ba1\u7b97\u5e93\uff0c\u9002\u5408\u5904\u7406\u5927\u89c4\u6a21\u7684\u6570\u7ec4\u548c\u77e9\u9635\u6570\u636e\u3002\u867d\u7136Numpy\u4e0d\u5982Pandas\u90a3\u6837\u65b9\u4fbf\u5904\u7406\u8868\u683c\u6570\u636e\uff0c\u4f46\u4e5f\u53ef\u4ee5\u7528\u4e8e\u5bfc\u5165\u4e00\u4e9b\u7b80\u5355\u7684\u6570\u636e\u96c6\u3002<\/p>\n<\/p>\n<p><h4>1. \u5bfc\u5165CSV\u6587\u4ef6<\/h4>\n<\/p>\n<p><p>Numpy\u63d0\u4f9b\u4e86<code>genfromtxt<\/code>\u51fd\u6570\u6765\u8bfb\u53d6CSV\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3aNumpy\u6570\u7ec4\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<h2><strong>\u4f7f\u7528genfromtxt\u51fd\u6570\u8bfb\u53d6CSV\u6587\u4ef6<\/strong><\/h2>\n<p>data = np.genfromtxt(&#39;path\/to\/your\/file.csv&#39;, delimiter=&#39;,&#39;)<\/p>\n<h2><strong>\u663e\u793a\u6570\u636e\u96c6\u7684\u524d\u4e94\u884c<\/strong><\/h2>\n<p>print(data[:5])<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u5bfc\u5165\u6587\u672c\u6587\u4ef6<\/h4>\n<\/p>\n<p><p>Numpy\u8fd8\u63d0\u4f9b\u4e86<code>loadtxt<\/code>\u51fd\u6570\u6765\u8bfb\u53d6\u6587\u672c\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3aNumpy\u6570\u7ec4\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<h2><strong>\u4f7f\u7528loadtxt\u51fd\u6570\u8bfb\u53d6\u6587\u672c\u6587\u4ef6<\/strong><\/h2>\n<p>data = np.loadtxt(&#39;path\/to\/your\/file.txt&#39;)<\/p>\n<h2><strong>\u663e\u793a\u6570\u636e\u96c6\u7684\u524d\u4e94\u884c<\/strong><\/h2>\n<p>print(data[:5])<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e09\u3001\u4f7f\u7528CSV\u6a21\u5757<\/h3>\n<\/p>\n<p><p>Python\u5185\u7f6e\u7684CSV\u6a21\u5757\u4e5f\u53ef\u4ee5\u7528\u6765\u8bfb\u53d6CSV\u6587\u4ef6\u3002\u867d\u7136\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u5982Pandas\u65b9\u4fbf\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u4e5f\u662f\u4e00\u79cd\u53ef\u884c\u7684\u9009\u62e9\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import csv<\/p>\n<h2><strong>\u6253\u5f00CSV\u6587\u4ef6<\/strong><\/h2>\n<p>with open(&#39;path\/to\/your\/file.csv&#39;, mode=&#39;r&#39;) as file:<\/p>\n<p>    # \u521b\u5efaCSV\u8bfb\u53d6\u5668<\/p>\n<p>    csv_reader = csv.reader(file)<\/p>\n<p>    # \u8bfb\u53d6CSV\u6587\u4ef6\u7684\u5185\u5bb9<\/p>\n<p>    data = [row for row in csv_reader]<\/p>\n<h2><strong>\u663e\u793a\u6570\u636e\u96c6\u7684\u524d\u4e94\u884c<\/strong><\/h2>\n<p>for row in data[:5]:<\/p>\n<p>    print(row)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u56db\u3001\u4f7f\u7528open()\u51fd\u6570<\/h3>\n<\/p>\n<p><p>\u5982\u679c\u6570\u636e\u96c6\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u6587\u672c\u6587\u4ef6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Python\u5185\u7f6e\u7684<code>open()<\/code>\u51fd\u6570\u6765\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u6253\u5f00\u6587\u672c\u6587\u4ef6<\/p>\n<p>with open(&#39;path\/to\/your\/file.txt&#39;, mode=&#39;r&#39;) as file:<\/p>\n<p>    # \u8bfb\u53d6\u6587\u4ef6\u7684\u5185\u5bb9<\/p>\n<p>    data = file.readlines()<\/p>\n<h2><strong>\u663e\u793a\u6570\u636e\u96c6\u7684\u524d\u4e94\u884c<\/strong><\/h2>\n<p>for line in data[:5]:<\/p>\n<p>    print(line.strip())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e94\u3001\u5c06\u6570\u636e\u5bfc\u5165\u5230\u6570\u636e\u5e93<\/h3>\n<\/p>\n<p><p>\u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u96c6\u65f6\uff0c\u5c06\u6570\u636e\u5bfc\u5165\u5230\u6570\u636e\u5e93\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u505a\u6cd5\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Pandas\u4e0e\u6570\u636e\u5e93\u8fde\u63a5\u5e93\uff08\u5982SQLAlchemy\uff09\u7ed3\u5408\u4f7f\u7528\uff0c\u5c06\u6570\u636e\u5bfc\u5165\u5230\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<p>from sqlalchemy import create_engine<\/p>\n<h2><strong>\u521b\u5efa\u6570\u636e\u5e93\u8fde\u63a5\u5f15\u64ce<\/strong><\/h2>\n<p>engine = create_engine(&#39;sqlite:\/\/\/path\/to\/your\/database.db&#39;)<\/p>\n<h2><strong>\u4f7f\u7528read_csv\u51fd\u6570\u8bfb\u53d6CSV\u6587\u4ef6<\/strong><\/h2>\n<p>df = pd.read_csv(&#39;path\/to\/your\/file.csv&#39;)<\/p>\n<h2><strong>\u5c06\u6570\u636e\u5bfc\u5165\u5230\u6570\u636e\u5e93\u4e2d<\/strong><\/h2>\n<p>df.to_sql(&#39;table_name&#39;, engine, if_exists=&#39;replace&#39;, index=False)<\/p>\n<h2><strong>\u663e\u793a\u6570\u636e\u96c6\u7684\u524d\u4e94\u884c<\/strong><\/h2>\n<p>print(df.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u516d\u3001\u4f7f\u7528Python API\u63a5\u53e3<\/h3>\n<\/p>\n<p><p>\u6709\u4e9b\u6570\u636e\u96c6\u53ef\u4ee5\u901a\u8fc7API\u63a5\u53e3\u76f4\u63a5\u83b7\u53d6\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Python\u7684<code>requests<\/code>\u5e93\u6765\u53d1\u9001HTTP\u8bf7\u6c42\uff0c\u5e76\u4f7f\u7528Pandas\u5e93\u5904\u7406\u8fd4\u56de\u7684\u6570\u636e\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<p>import requests<\/p>\n<h2><strong>\u53d1\u9001HTTP\u8bf7\u6c42<\/strong><\/h2>\n<p>response = requests.get(&#39;https:\/\/api.example.com\/data&#39;)<\/p>\n<h2><strong>\u5c06\u8fd4\u56de\u7684JSON\u6570\u636e\u8f6c\u6362\u4e3aDataFrame<\/strong><\/h2>\n<p>df = pd.json_normalize(response.json())<\/p>\n<h2><strong>\u663e\u793a\u6570\u636e\u96c6\u7684\u524d\u4e94\u884c<\/strong><\/h2>\n<p>print(df.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e03\u3001\u4f7f\u7528\u5176\u4ed6\u6570\u636e\u683c\u5f0f<\/h3>\n<\/p>\n<p><p>\u9664\u4e86\u4e0a\u8ff0\u5e38\u89c1\u7684\u6570\u636e\u683c\u5f0f\uff0c\u8fd8\u6709\u5176\u4ed6\u4e00\u4e9b\u6570\u636e\u683c\u5f0f\uff08\u5982HDF5\u3001Parquet\u7b49\uff09\u4e5f\u53ef\u4ee5\u4f7f\u7528Pandas\u5e93\u8fdb\u884c\u8bfb\u53d6\u3002<\/p>\n<\/p>\n<p><h4>1. \u5bfc\u5165HDF5\u6587\u4ef6<\/h4>\n<\/p>\n<p><p>HDF5\uff08Hierarchical Data Format version 5\uff09\u662f\u4e00\u79cd\u7528\u4e8e\u5b58\u50a8\u5927\u89c4\u6a21\u6570\u636e\u7684\u6587\u4ef6\u683c\u5f0f\u3002Pandas\u63d0\u4f9b\u4e86<code>read_hdf<\/code>\u51fd\u6570\u6765\u8bfb\u53d6HDF5\u6587\u4ef6\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<h2><strong>\u4f7f\u7528read_hdf\u51fd\u6570\u8bfb\u53d6HDF5\u6587\u4ef6<\/strong><\/h2>\n<p>df = pd.read_hdf(&#39;path\/to\/your\/file.h5&#39;)<\/p>\n<h2><strong>\u663e\u793a\u6570\u636e\u96c6\u7684\u524d\u4e94\u884c<\/strong><\/h2>\n<p>print(df.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u5bfc\u5165Parquet\u6587\u4ef6<\/h4>\n<\/p>\n<p><p>Parquet\u662f\u4e00\u79cd\u5217\u5f0f\u5b58\u50a8\u6587\u4ef6\u683c\u5f0f\uff0c\u7279\u522b\u9002\u5408\u5927\u89c4\u6a21\u6570\u636e\u7684\u5b58\u50a8\u548c\u5904\u7406\u3002Pandas\u63d0\u4f9b\u4e86<code>read_parquet<\/code>\u51fd\u6570\u6765\u8bfb\u53d6Parquet\u6587\u4ef6\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<h2><strong>\u4f7f\u7528read_parquet\u51fd\u6570\u8bfb\u53d6Parquet\u6587\u4ef6<\/strong><\/h2>\n<p>df = pd.read_parquet(&#39;path\/to\/your\/file.parquet&#39;)<\/p>\n<h2><strong>\u663e\u793a\u6570\u636e\u96c6\u7684\u524d\u4e94\u884c<\/strong><\/h2>\n<p>print(df.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u516b\u3001\u6570\u636e\u9884\u5904\u7406<\/h3>\n<\/p>\n<p><p>\u5bfc\u5165\u6570\u636e\u96c6\u540e\uff0c\u901a\u5e38\u9700\u8981\u5bf9\u6570\u636e\u8fdb\u884c\u9884\u5904\u7406\uff0c\u4ee5\u4fbf\u540e\u7eed\u7684\u5206\u6790\u548c\u5904\u7406\u3002\u8fd9\u5305\u62ec\u5904\u7406\u7f3a\u5931\u503c\u3001\u6570\u636e\u7c7b\u578b\u8f6c\u6362\u3001\u6570\u636e\u6e05\u6d17\u7b49\u3002<\/p>\n<\/p>\n<p><h4>1. \u5904\u7406\u7f3a\u5931\u503c<\/h4>\n<\/p>\n<p><p>\u7f3a\u5931\u503c\u662f\u6570\u636e\u96c6\u4e2d\u5e38\u89c1\u7684\u95ee\u9898\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Pandas\u5e93\u7684<code>isnull<\/code>\u548c<code>fillna<\/code>\u51fd\u6570\u6765\u5904\u7406\u7f3a\u5931\u503c\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<h2><strong>\u4f7f\u7528read_csv\u51fd\u6570\u8bfb\u53d6CSV\u6587\u4ef6<\/strong><\/h2>\n<p>df = pd.read_csv(&#39;path\/to\/your\/file.csv&#39;)<\/p>\n<h2><strong>\u68c0\u67e5\u7f3a\u5931\u503c<\/strong><\/h2>\n<p>print(df.isnull().sum())<\/p>\n<h2><strong>\u4f7f\u7528fillna\u51fd\u6570\u586b\u5145\u7f3a\u5931\u503c<\/strong><\/h2>\n<p>df.fillna(0, inplace=True)<\/p>\n<h2><strong>\u663e\u793a\u5904\u7406\u540e\u7684\u6570\u636e\u96c6<\/strong><\/h2>\n<p>print(df.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u6570\u636e\u7c7b\u578b\u8f6c\u6362<\/h4>\n<\/p>\n<p><p>\u6709\u65f6\u5019\u5bfc\u5165\u7684\u6570\u636e\u7c7b\u578b\u53ef\u80fd\u4e0d\u7b26\u5408\u6211\u4eec\u7684\u9700\u6c42\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Pandas\u5e93\u7684<code>astype<\/code>\u51fd\u6570\u6765\u8f6c\u6362\u6570\u636e\u7c7b\u578b\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<h2><strong>\u4f7f\u7528read_csv\u51fd\u6570\u8bfb\u53d6CSV\u6587\u4ef6<\/strong><\/h2>\n<p>df = pd.read_csv(&#39;path\/to\/your\/file.csv&#39;)<\/p>\n<h2><strong>\u8f6c\u6362\u6570\u636e\u7c7b\u578b<\/strong><\/h2>\n<p>df[&#39;column_name&#39;] = df[&#39;column_name&#39;].astype(float)<\/p>\n<h2><strong>\u663e\u793a\u5904\u7406\u540e\u7684\u6570\u636e\u96c6<\/strong><\/h2>\n<p>print(df.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>3. \u6570\u636e\u6e05\u6d17<\/h4>\n<\/p>\n<p><p>\u6570\u636e\u6e05\u6d17\u662f\u6570\u636e\u9884\u5904\u7406\u7684\u91cd\u8981\u6b65\u9aa4\uff0c\u5305\u62ec\u53bb\u9664\u91cd\u590d\u6570\u636e\u3001\u5904\u7406\u5f02\u5e38\u503c\u7b49\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Pandas\u5e93\u7684<code>drop_duplicates<\/code>\u548c<code>replace<\/code>\u51fd\u6570\u6765\u8fdb\u884c\u6570\u636e\u6e05\u6d17\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<h2><strong>\u4f7f\u7528read_csv\u51fd\u6570\u8bfb\u53d6CSV\u6587\u4ef6<\/strong><\/h2>\n<p>df = pd.read_csv(&#39;path\/to\/your\/file.csv&#39;)<\/p>\n<h2><strong>\u53bb\u9664\u91cd\u590d\u6570\u636e<\/strong><\/h2>\n<p>df.drop_duplicates(inplace=True)<\/p>\n<h2><strong>\u5904\u7406\u5f02\u5e38\u503c<\/strong><\/h2>\n<p>df[&#39;column_name&#39;].replace(-999, 0, inplace=True)<\/p>\n<h2><strong>\u663e\u793a\u5904\u7406\u540e\u7684\u6570\u636e\u96c6<\/strong><\/h2>\n<p>print(df.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e5d\u3001\u6570\u636e\u53ef\u89c6\u5316<\/h3>\n<\/p>\n<p><p>\u6570\u636e\u53ef\u89c6\u5316\u662f\u6570\u636e\u5206\u6790\u7684\u91cd\u8981\u6b65\u9aa4\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u6570\u636e\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Pandas\u5e93\u4e0eMatplotlib\u5e93\u7ed3\u5408\u4f7f\u7528\uff0c\u8fdb\u884c\u6570\u636e\u53ef\u89c6\u5316\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<p>import matplotlib.pyplot as plt<\/p>\n<h2><strong>\u4f7f\u7528read_csv\u51fd\u6570\u8bfb\u53d6CSV\u6587\u4ef6<\/strong><\/h2>\n<p>df = pd.read_csv(&#39;path\/to\/your\/file.csv&#39;)<\/p>\n<h2><strong>\u7ed8\u5236\u6570\u636e\u5206\u5e03\u56fe<\/strong><\/h2>\n<p>df[&#39;column_name&#39;].hist()<\/p>\n<p>plt.show()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u5341\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>Python\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u5c06\u6570\u636e\u96c6\u8fdb\u884c\u5bfc\u5165\uff0c\u5305\u62ec\u4f7f\u7528Pandas\u5e93\u3001Numpy\u5e93\u3001CSV\u6a21\u5757\u3001open()\u51fd\u6570\u7b49\u3002<strong>\u4f7f\u7528Pandas\u5e93<\/strong>\u662f\u6700\u4e3a\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u529f\u80fd\u3002\u65e0\u8bba\u662f\u8bfb\u53d6CSV\u3001Excel\u3001JSON\u7b49\u683c\u5f0f\u7684\u6570\u636e\u6587\u4ef6\uff0c\u8fd8\u662f\u901a\u8fc7API\u63a5\u53e3\u83b7\u53d6\u6570\u636e\uff0cPandas\u5e93\u90fd\u80fd\u8f7b\u677e\u5e94\u5bf9\u3002\u540c\u65f6\uff0c\u5bfc\u5165\u6570\u636e\u96c6\u540e\uff0c\u901a\u5e38\u9700\u8981\u5bf9\u6570\u636e\u8fdb\u884c\u9884\u5904\u7406\u548c\u6e05\u6d17\uff0c\u4ee5\u4fbf\u540e\u7eed\u7684\u5206\u6790\u548c\u5904\u7406\u3002\u901a\u8fc7\u5408\u7406\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u548c\u6280\u5de7\uff0c\u6211\u4eec\u53ef\u4ee5\u9ad8\u6548\u5730\u5bfc\u5165\u548c\u5904\u7406\u6570\u636e\u96c6\uff0c\u4ece\u800c\u4e3a\u6570\u636e\u5206\u6790\u548c<a href=\"https:\/\/docs.pingcode.com\/ask\/59192.html\" target=\"_blank\">\u673a\u5668\u5b66\u4e60<\/a>\u5960\u5b9a\u575a\u5b9e\u7684\u57fa\u7840\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u5bfc\u5165CSV\u683c\u5f0f\u7684\u6570\u636e\u96c6\uff1f<\/strong><br \/>\u8981\u5bfc\u5165CSV\u683c\u5f0f\u7684\u6570\u636e\u96c6\uff0c\u53ef\u4ee5\u4f7f\u7528Pandas\u5e93\u7684<code>read_csv()<\/code>\u51fd\u6570\u3002\u9996\u5148\uff0c\u786e\u4fdd\u5b89\u88c5\u4e86Pandas\u5e93\u3002\u7136\u540e\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u5bfc\u5165\u6570\u636e\u96c6\uff1a<\/p>\n<pre><code class=\"language-python\">import pandas as pd\n\ndata = pd.read_csv(&#39;your_dataset.csv&#39;)\n<\/code><\/pre>\n<p>\u8fd9\u5c06\u8bfb\u53d6CSV\u6587\u4ef6\u5e76\u5c06\u5176\u5b58\u50a8\u4e3aDataFrame\u5bf9\u8c61\uff0c\u4fbf\u4e8e\u8fdb\u4e00\u6b65\u7684\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\u5bfc\u5165Excel\u6587\u4ef6\u9700\u8981\u54ea\u4e9b\u6b65\u9aa4\uff1f<\/strong><br \/>\u5bfc\u5165Excel\u6587\u4ef6\u53ef\u4ee5\u4f7f\u7528Pandas\u5e93\u7684<code>read_excel()<\/code>\u51fd\u6570\u3002\u786e\u4fdd\u5df2\u5b89\u88c5<code>openpyxl<\/code>\u6216<code>xlrd<\/code>\u5e93\uff08\u53d6\u51b3\u4e8eExcel\u6587\u4ef6\u683c\u5f0f\uff09\u3002\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"language-python\">import pandas as pd\n\ndata = pd.read_excel(&#39;your_dataset.xlsx&#39;)\n<\/code><\/pre>\n<p>\u6b64\u4ee3\u7801\u5c06\u8bfb\u53d6Excel\u6587\u4ef6\u5e76\u5c06\u5176\u5b58\u50a8\u4e3aDataFrame\u5bf9\u8c61\uff0c\u9002\u7528\u4e8e\u6570\u636e\u5206\u6790\u548c\u5904\u7406\u3002<\/p>\n<p><strong>\u5982\u4f55\u5728Python\u4e2d\u5bfc\u5165JSON\u683c\u5f0f\u7684\u6570\u636e\u96c6\uff1f<\/strong><br \/>\u8981\u5bfc\u5165JSON\u683c\u5f0f\u7684\u6570\u636e\u96c6\uff0c\u53ef\u4ee5\u4f7f\u7528Pandas\u5e93\u7684<code>read_json()<\/code>\u51fd\u6570\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"language-python\">import pandas as pd\n\ndata = pd.read_json(&#39;your_dataset.json&#39;)\n<\/code><\/pre>\n<p>\u6b64\u51fd\u6570\u5c06\u8bfb\u53d6JSON\u6587\u4ef6\u5e76\u5c06\u5176\u8f6c\u6362\u4e3aDataFrame\u5bf9\u8c61\uff0c\u4fbf\u4e8e\u8fdb\u4e00\u6b65\u64cd\u4f5c\u548c\u5206\u6790\u3002\u5bf9\u4e8e\u590d\u6742\u7684JSON\u7ed3\u6784\uff0c\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u53c2\u6570\u6765\u6307\u5b9a\u6570\u636e\u7684\u89e3\u6790\u65b9\u5f0f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u5c06\u6570\u636e\u96c6\u8fdb\u884c\u5bfc\u5165\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5e38\u89c1\u7684\u6709\u4f7f\u7528Pandas\u5e93\u3001\u4f7f\u7528Numpy\u5e93\u3001\u4f7f\u7528CSV\u6a21\u5757\u3001\u4f7f\u7528o [&hellip;]","protected":false},"author":3,"featured_media":1094087,"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\/1094081"}],"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=1094081"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1094081\/revisions"}],"predecessor-version":[{"id":1094089,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1094081\/revisions\/1094089"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1094087"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1094081"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1094081"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1094081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}