{"id":953384,"date":"2024-12-27T01:43:07","date_gmt":"2024-12-26T17:43:07","guid":{"rendered":""},"modified":"2024-12-27T01:43:09","modified_gmt":"2024-12-26T17:43:09","slug":"python%e5%a6%82%e4%bd%95%e8%af%bb%e5%8f%96csv%e6%b8%b8%e6%88%8f","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/953384.html","title":{"rendered":"python\u5982\u4f55\u8bfb\u53d6csv\u6e38\u620f"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25090900\/ee62c717-185f-4ed7-817e-4f66fba8f38b.webp\" alt=\"python\u5982\u4f55\u8bfb\u53d6csv\u6e38\u620f\" \/><\/p>\n<p><p> <strong>\u4f7f\u7528Python\u8bfb\u53d6CSV\u6587\u4ef6\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff0c\u5e38\u7528\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u7684csv\u6a21\u5757\u3001pandas\u5e93\u3001\u4ee5\u53canumpy\u5e93\u7b49\u3002csv\u6a21\u5757\u9002\u5408\u5904\u7406\u7b80\u5355\u7684CSV\u6587\u4ef6\u3001pandas\u5e93\u63d0\u4f9b\u5f3a\u5927\u7684\u6570\u636e\u5206\u6790\u80fd\u529b\u3001\u800cnumpy\u9002\u7528\u4e8e\u9700\u8981\u9ad8\u6548\u5904\u7406\u6570\u503c\u6570\u636e\u7684\u573a\u666f\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u8fd9\u4e09\u79cd\u65b9\u6cd5\u8bfb\u53d6CSV\u6587\u4ef6\uff0c\u5e76\u63a2\u8ba8\u5b83\u4eec\u5404\u81ea\u7684\u4f18\u7f3a\u70b9\u3002<\/strong><\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528CSV\u6a21\u5757\u8bfb\u53d6CSV\u6587\u4ef6<\/h3>\n<\/p>\n<p><p>Python\u5185\u7f6e\u7684csv\u6a21\u5757\u662f\u5904\u7406CSV\u6587\u4ef6\u7684\u57fa\u7840\u5de5\u5177\uff0c\u975e\u5e38\u9002\u5408\u8bfb\u53d6\u7b80\u5355\u7684CSV\u6587\u4ef6\u3002<\/p>\n<\/p>\n<p><h4>1. \u57fa\u672c\u4f7f\u7528\u65b9\u6cd5<\/h4>\n<\/p>\n<p><p>csv\u6a21\u5757\u63d0\u4f9b\u4e86reader\u548cDictReader\u4e24\u4e2a\u4e3b\u8981\u7684\u5bf9\u8c61\u6765\u8bfb\u53d6CSV\u6587\u4ef6\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>csv.reader<\/strong>\uff1a\u6309\u884c\u8bfb\u53d6CSV\u6587\u4ef6\uff0c\u8fd4\u56de\u4e00\u4e2a\u8fed\u4ee3\u5668\u3002<\/li>\n<li><strong>csv.DictReader<\/strong>\uff1a\u5c06CSV\u6587\u4ef6\u4e2d\u7684\u6bcf\u4e00\u884c\u6620\u5c04\u4e3a\u4e00\u4e2a\u5b57\u5178\uff0c\u5217\u540d\u4f5c\u4e3a\u952e\u3002<\/li>\n<\/ul>\n<p><p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import csv<\/p>\n<p>def read_csv_with_reader(file_path):<\/p>\n<p>    with open(file_path, newline=&#39;&#39;, encoding=&#39;utf-8&#39;) as csvfile:<\/p>\n<p>        csvreader = csv.reader(csvfile)<\/p>\n<p>        for row in csvreader:<\/p>\n<p>            print(row)<\/p>\n<p>def read_csv_with_dictreader(file_path):<\/p>\n<p>    with open(file_path, newline=&#39;&#39;, encoding=&#39;utf-8&#39;) as csvfile:<\/p>\n<p>        csvreader = csv.DictReader(csvfile)<\/p>\n<p>        for row in csvreader:<\/p>\n<p>            print(row)<\/p>\n<h2><strong>\u793a\u4f8b\u8c03\u7528<\/strong><\/h2>\n<h2><strong>read_csv_with_reader(&#39;game_data.csv&#39;)<\/strong><\/h2>\n<h2><strong>read_csv_with_dictreader(&#39;game_data.csv&#39;)<\/strong><\/h2>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u4f18\u7f3a\u70b9<\/h4>\n<\/p>\n<ul>\n<li><strong>\u4f18\u70b9<\/strong>\uff1acsv\u6a21\u5757\u662fPython\u7684\u6807\u51c6\u5e93\uff0c\u65e0\u9700\u989d\u5916\u5b89\u88c5\uff0c\u9002\u5408\u5904\u7406\u7b80\u5355\u7684CSV\u6587\u4ef6\u3002<\/li>\n<li><strong>\u7f3a\u70b9<\/strong>\uff1a\u529f\u80fd\u76f8\u5bf9\u7b80\u5355\uff0c\u65e0\u6cd5\u5904\u7406\u590d\u6742\u7684\u6570\u636e\u5206\u6790\u4efb\u52a1\u3002<\/li>\n<\/ul>\n<p><h3>\u4e8c\u3001\u4f7f\u7528Pandas\u8bfb\u53d6CSV\u6587\u4ef6<\/h3>\n<\/p>\n<p><p>Pandas\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u636e\u5206\u6790\u5e93\uff0c\u63d0\u4f9b\u4e86\u66f4\u52a0\u4fbf\u6377\u548c\u5f3a\u5927\u7684\u8bfb\u53d6CSV\u6587\u4ef6\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><h4>1. \u57fa\u672c\u4f7f\u7528\u65b9\u6cd5<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528pandas\u8bfb\u53d6CSV\u6587\u4ef6\u53ea\u9700\u4e00\u884c\u4ee3\u7801\uff0c\u53ef\u4ee5\u5c06\u6570\u636e\u76f4\u63a5\u52a0\u8f7d\u5230DataFrame\u4e2d\u3002<\/p>\n<\/p>\n<p><p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<p>def read_csv_with_pandas(file_path):<\/p>\n<p>    df = pd.read_csv(file_path)<\/p>\n<p>    print(df.head())  # \u6253\u5370\u524d5\u884c<\/p>\n<h2><strong>\u793a\u4f8b\u8c03\u7528<\/strong><\/h2>\n<h2><strong>read_csv_with_pandas(&#39;game_data.csv&#39;)<\/strong><\/h2>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u8be6\u7ec6\u89e3\u6790<\/h4>\n<\/p>\n<p><p>Pandas\u7684read_csv\u51fd\u6570\u5177\u6709\u8bb8\u591a\u53c2\u6570\uff0c\u53ef\u4ee5\u5b9a\u5236\u8bfb\u53d6CSV\u7684\u65b9\u5f0f\uff1a<\/p>\n<\/p>\n<ul>\n<li><code>sep<\/code>: \u6307\u5b9a\u5206\u9694\u7b26\uff0c\u9ed8\u8ba4\u4e3a\u9017\u53f7\u3002<\/li>\n<li><code>header<\/code>: \u6307\u5b9a\u54ea\u4e00\u884c\u4f5c\u4e3a\u5217\u540d\uff0c\u9ed8\u8ba4\u4e3a0\uff08\u7b2c\u4e00\u884c\uff09\u3002<\/li>\n<li><code>names<\/code>: \u5982\u679c\u6ca1\u6709\u5217\u540d\uff0c\u53ef\u4ee5\u901a\u8fc7\u8be5\u53c2\u6570\u6307\u5b9a\u3002<\/li>\n<li><code>index_col<\/code>: \u6307\u5b9a\u54ea\u4e00\u5217\u4f5c\u4e3a\u7d22\u5f15\u3002<\/li>\n<li><code>usecols<\/code>: \u9009\u62e9\u9700\u8981\u8bfb\u53d6\u7684\u5217\u3002<\/li>\n<li><code>dtype<\/code>: \u6307\u5b9a\u6570\u636e\u7c7b\u578b\u3002<\/li>\n<\/ul>\n<p><p>\u4f8b\u5982\uff0c\u8bfb\u53d6\u7279\u5b9a\u5217\u5e76\u8bbe\u7f6e\u6570\u636e\u7c7b\u578b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">df = pd.read_csv(&#39;game_data.csv&#39;, usecols=[&#39;name&#39;, &#39;score&#39;], dtype={&#39;score&#39;: &#39;int&#39;})<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>3. \u4f18\u7f3a\u70b9<\/h4>\n<\/p>\n<ul>\n<li><strong>\u4f18\u70b9<\/strong>\uff1a\u529f\u80fd\u5f3a\u5927\uff0c\u652f\u6301\u590d\u6742\u7684\u6570\u636e\u64cd\u4f5c\u548c\u5206\u6790\uff0c\u9002\u5408\u5904\u7406\u5927\u6570\u636e\u96c6\u3002<\/li>\n<li><strong>\u7f3a\u70b9<\/strong>\uff1a\u9700\u8981\u989d\u5916\u5b89\u88c5\uff0c\u53ef\u80fd\u4f1a\u5360\u7528\u8f83\u591a\u5185\u5b58\u3002<\/li>\n<\/ul>\n<p><h3>\u4e09\u3001\u4f7f\u7528Numpy\u8bfb\u53d6CSV\u6587\u4ef6<\/h3>\n<\/p>\n<p><p>Numpy\u662f\u4e00\u4e2a\u7528\u4e8e\u79d1\u5b66\u8ba1\u7b97\u7684\u5e93\uff0c\u9002\u5408\u5904\u7406\u6570\u503c\u5bc6\u96c6\u578b\u7684\u6570\u636e\u3002<\/p>\n<\/p>\n<p><h4>1. \u57fa\u672c\u4f7f\u7528\u65b9\u6cd5<\/h4>\n<\/p>\n<p><p>Numpy\u63d0\u4f9b\u4e86<code>numpy.loadtxt<\/code>\u548c<code>numpy.genfromtxt<\/code>\u4e24\u4e2a\u51fd\u6570\u6765\u8bfb\u53d6CSV\u6587\u4ef6\u3002<\/p>\n<\/p>\n<p><p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p>def read_csv_with_numpy(file_path):<\/p>\n<p>    data = np.loadtxt(file_path, delimiter=&#39;,&#39;, skiprows=1)<\/p>\n<p>    print(data)<\/p>\n<h2><strong>\u793a\u4f8b\u8c03\u7528<\/strong><\/h2>\n<h2><strong>read_csv_with_numpy(&#39;game_data.csv&#39;)<\/strong><\/h2>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u8be6\u7ec6\u89e3\u6790<\/h4>\n<\/p>\n<ul>\n<li><code>delimiter<\/code>: \u6307\u5b9a\u5206\u9694\u7b26\u3002<\/li>\n<li><code>skiprows<\/code>: \u8df3\u8fc7\u524d\u51e0\u884c\uff0c\u4f8b\u5982\u8df3\u8fc7\u6807\u9898\u884c\u3002<\/li>\n<li><code>usecols<\/code>: \u6307\u5b9a\u9700\u8981\u8bfb\u53d6\u7684\u5217\u3002<\/li>\n<\/ul>\n<p><p><code>numpy.genfromtxt<\/code>\u4e0e<code>loadtxt<\/code>\u7c7b\u4f3c\uff0c\u4f46\u529f\u80fd\u66f4\u5f3a\u5927\uff0c\u652f\u6301\u7f3a\u5931\u503c\u5904\u7406\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">data = np.genfromtxt(&#39;game_data.csv&#39;, delimiter=&#39;,&#39;, skip_header=1, filling_values=0)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>3. \u4f18\u7f3a\u70b9<\/h4>\n<\/p>\n<ul>\n<li><strong>\u4f18\u70b9<\/strong>\uff1a\u9002\u5408\u5904\u7406\u6570\u503c\u6570\u636e\uff0c\u6548\u7387\u9ad8\u3002<\/li>\n<li><strong>\u7f3a\u70b9<\/strong>\uff1a\u5bf9\u975e\u6570\u503c\u6570\u636e\u652f\u6301\u8f83\u5f31\uff0c\u4e0d\u5982pandas\u7075\u6d3b\u3002<\/li>\n<\/ul>\n<p><h3>\u56db\u3001\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p>\u5728\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u65f6\uff0c\u5e94\u6839\u636e\u5177\u4f53\u9700\u6c42\u548c\u6570\u636e\u7279\u6027\u6765\u51b3\u5b9a\uff1a<\/p>\n<\/p>\n<ul>\n<li><strong>\u7b80\u5355CSV\u6587\u4ef6<\/strong>\uff1a\u4f7f\u7528csv\u6a21\u5757\u5373\u53ef\u6ee1\u8db3\u9700\u6c42\u3002<\/li>\n<li><strong>\u6570\u636e\u5206\u6790\u548c\u5904\u7406<\/strong>\uff1a\u63a8\u8350\u4f7f\u7528pandas\uff0c\u529f\u80fd\u5f3a\u5927\u4e14\u6613\u4e8e\u4f7f\u7528\u3002<\/li>\n<li><strong>\u6570\u503c\u8ba1\u7b97<\/strong>\uff1a\u5982\u679c\u6570\u636e\u4e3b\u8981\u662f\u6570\u503c\u7c7b\u578b\uff0c\u4e14\u5bf9\u5185\u5b58\u5360\u7528\u6709\u8981\u6c42\uff0c\u53ef\u4ee5\u8003\u8651numpy\u3002<\/li>\n<\/ul>\n<p><h3>\u4e94\u3001\u5904\u7406CSV\u6587\u4ef6\u4e2d\u7684\u7279\u6b8a\u60c5\u51b5<\/h3>\n<\/p>\n<p><p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0cCSV\u6587\u4ef6\u53ef\u80fd\u5305\u542b\u5404\u79cd\u7279\u6b8a\u60c5\u51b5\uff0c\u5982\u7f3a\u5931\u503c\u3001\u7279\u6b8a\u5b57\u7b26\u3001\u591a\u91cd\u5206\u9694\u7b26\u7b49\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u95ee\u9898\u53ca\u5176\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<\/p>\n<p><h4>1. \u7f3a\u5931\u503c\u5904\u7406<\/h4>\n<\/p>\n<p><p>\u5728CSV\u6587\u4ef6\u4e2d\uff0c\u7f3a\u5931\u503c\u662f\u4e00\u4e2a\u5e38\u89c1\u95ee\u9898\uff0c\u5c24\u5176\u662f\u5728\u6570\u636e\u6536\u96c6\u4e0d\u5b8c\u6574\u7684\u60c5\u51b5\u4e0b\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>\u4f7f\u7528Pandas\u5904\u7406\u7f3a\u5931\u503c<\/strong>\uff1aPandas\u53ef\u4ee5\u81ea\u52a8\u5904\u7406\u7f3a\u5931\u503c\uff0c\u5e76\u63d0\u4f9b\u4e86\u4e00\u4e9b\u65b9\u6cd5\u6765\u586b\u8865\u6216\u5220\u9664\u8fd9\u4e9b\u503c\u3002<\/li>\n<\/ul>\n<p><pre><code class=\"language-python\">df = pd.read_csv(&#39;game_data.csv&#39;)<\/p>\n<p>df.fillna(0, inplace=True)  # \u75280\u586b\u5145\u7f3a\u5931\u503c<\/p>\n<h2><strong>\u6216\u8005\u5220\u9664\u5305\u542b\u7f3a\u5931\u503c\u7684\u884c<\/strong><\/h2>\n<p>df.dropna(inplace=True)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ul>\n<li><strong>\u4f7f\u7528Numpy\u5904\u7406\u7f3a\u5931\u503c<\/strong>\uff1aNumpy\u7684<code>genfromtxt<\/code>\u51fd\u6570\u53ef\u4ee5\u901a\u8fc7<code>filling_values<\/code>\u53c2\u6570\u5904\u7406\u7f3a\u5931\u503c\u3002<\/li>\n<\/ul>\n<p><pre><code class=\"language-python\">data = np.genfromtxt(&#39;game_data.csv&#39;, delimiter=&#39;,&#39;, skip_header=1, filling_values=0)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u7279\u6b8a\u5b57\u7b26\u5904\u7406<\/h4>\n<\/p>\n<p><p>CSV\u6587\u4ef6\u4e2d\u53ef\u80fd\u5305\u542b\u7279\u6b8a\u5b57\u7b26\uff0c\u5982\u9017\u53f7\u3001\u5f15\u53f7\u7b49\uff0c\u8fd9\u4e9b\u5b57\u7b26\u53ef\u80fd\u4f1a\u5f71\u54cd\u6587\u4ef6\u7684\u6b63\u786e\u89e3\u6790\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>\u4f7f\u7528csv\u6a21\u5757\u5904\u7406\u7279\u6b8a\u5b57\u7b26<\/strong>\uff1a\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e<code>quotechar<\/code>\u548c<code>escapechar<\/code>\u53c2\u6570\u6765\u5904\u7406\u7279\u6b8a\u5b57\u7b26\u3002<\/li>\n<\/ul>\n<p><pre><code class=\"language-python\">with open(&#39;game_data.csv&#39;, newline=&#39;&#39;, encoding=&#39;utf-8&#39;) as csvfile:<\/p>\n<p>    csvreader = csv.reader(csvfile, quotechar=&#39;&quot;&#39;, escapechar=&#39;\\\\&#39;)<\/p>\n<p>    for row in csvreader:<\/p>\n<p>        print(row)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ul>\n<li><strong>\u4f7f\u7528Pandas\u5904\u7406\u7279\u6b8a\u5b57\u7b26<\/strong>\uff1aPandas\u7684<code>read_csv<\/code>\u51fd\u6570\u53ef\u4ee5\u901a\u8fc7<code>quotechar<\/code>\u53c2\u6570\u6307\u5b9a\u5f15\u7528\u5b57\u7b26\u3002<\/li>\n<\/ul>\n<p><pre><code class=\"language-python\">df = pd.read_csv(&#39;game_data.csv&#39;, quotechar=&#39;&quot;&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>3. \u591a\u91cd\u5206\u9694\u7b26\u5904\u7406<\/h4>\n<\/p>\n<p><p>\u6709\u65f6CSV\u6587\u4ef6\u53ef\u80fd\u5305\u542b\u591a\u79cd\u5206\u9694\u7b26\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\u9700\u8981\u7279\u6b8a\u5904\u7406\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>\u4f7f\u7528Pandas\u5904\u7406\u591a\u91cd\u5206\u9694\u7b26<\/strong>\uff1a\u53ef\u4ee5\u901a\u8fc7\u6b63\u5219\u8868\u8fbe\u5f0f\u6765\u6307\u5b9a\u5206\u9694\u7b26\u3002<\/li>\n<\/ul>\n<p><pre><code class=\"language-python\">df = pd.read_csv(&#39;game_data.csv&#39;, sep=r&#39;\\s*,\\s*&#39;, engine=&#39;python&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u516d\u3001\u4f18\u5316CSV\u6587\u4ef6\u8bfb\u53d6\u6027\u80fd<\/h3>\n<\/p>\n<p><p>\u5728\u5904\u7406\u5927\u89c4\u6a21CSV\u6587\u4ef6\u65f6\uff0c\u6027\u80fd\u53ef\u80fd\u6210\u4e3a\u74f6\u9888\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f18\u5316\u6280\u5de7\uff1a<\/p>\n<\/p>\n<p><h4>1. \u4f7f\u7528<code>chunksize<\/code>\u53c2\u6570<\/h4>\n<\/p>\n<p><p>Pandas\u7684<code>read_csv<\/code>\u51fd\u6570\u652f\u6301<code>chunksize<\/code>\u53c2\u6570\uff0c\u53ef\u4ee5\u5206\u5757\u8bfb\u53d6CSV\u6587\u4ef6\uff0c\u9002\u5408\u5904\u7406\u5927\u6587\u4ef6\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">for chunk in pd.read_csv(&#39;game_data.csv&#39;, chunksize=1000):<\/p>\n<p>    process(chunk)  # \u81ea\u5b9a\u4e49\u5904\u7406\u51fd\u6570<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u4f7f\u7528<code>dtype<\/code>\u53c2\u6570<\/h4>\n<\/p>\n<p><p>\u6307\u5b9a\u6570\u636e\u7c7b\u578b\u53ef\u4ee5\u52a0\u5feb\u8bfb\u53d6\u901f\u5ea6\uff0c\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">df = pd.read_csv(&#39;game_data.csv&#39;, dtype={&#39;column1&#39;: &#39;int32&#39;, &#39;column2&#39;: &#39;float32&#39;})<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>3. \u9009\u62e9\u6027\u8bfb\u53d6\u5217<\/h4>\n<\/p>\n<p><p>\u5982\u679c\u53ea\u9700\u8981\u5904\u7406\u6587\u4ef6\u4e2d\u7684\u90e8\u5206\u5217\uff0c\u53ef\u4ee5\u4f7f\u7528<code>usecols<\/code>\u53c2\u6570\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">df = pd.read_csv(&#39;game_data.csv&#39;, usecols=[&#39;name&#39;, &#39;score&#39;])<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e03\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u5728Python\u4e2d\u8bfb\u53d6CSV\u6587\u4ef6\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4f9b\u9009\u62e9\uff0ccsv\u6a21\u5757\u3001pandas\u548cnumpy\u5404\u6709\u5176\u9002\u7528\u573a\u666f\u3002\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u5904\u7406\u6548\u7387\uff0c\u6ee1\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002\u5bf9\u4e8e\u7b80\u5355\u7684CSV\u6587\u4ef6\uff0ccsv\u6a21\u5757\u662f\u4e00\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\uff1b\u5bf9\u4e8e\u590d\u6742\u7684\u6570\u636e\u5206\u6790\u4efb\u52a1\uff0cpandas\u65e0\u7591\u662f\u6700\u4f73\u9009\u62e9\uff1b\u800c\u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u503c\u6570\u636e\u65f6\uff0cnumpy\u80fd\u591f\u63d0\u4f9b\u9ad8\u6548\u7684\u652f\u6301\u3002\u6b64\u5916\uff0c\u5904\u7406CSV\u6587\u4ef6\u65f6\u9700\u8981\u8003\u8651\u7f3a\u5931\u503c\u3001\u7279\u6b8a\u5b57\u7b26\u548c\u5927\u6587\u4ef6\u7684\u6027\u80fd\u4f18\u5316\u95ee\u9898\uff0c\u901a\u8fc7\u5408\u7406\u7684\u7b56\u7565\u53ef\u4ee5\u6709\u6548\u5e94\u5bf9\u8fd9\u4e9b\u6311\u6218\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u8bfb\u53d6CSV\u6587\u4ef6\u7684\u57fa\u672c\u6b65\u9aa4\u662f\u4ec0\u4e48\uff1f<\/strong><br \/>\u5728Python\u4e2d\u8bfb\u53d6CSV\u6587\u4ef6\u901a\u5e38\u4f7f\u7528\u5185\u7f6e\u7684<code>csv<\/code>\u6a21\u5757\u6216\u8005<code>pandas<\/code>\u5e93\u3002\u4f7f\u7528<code>csv<\/code>\u6a21\u5757\u65f6\uff0c\u9700\u8981\u6253\u5f00\u6587\u4ef6\u5e76\u521b\u5efa\u4e00\u4e2aCSV\u8bfb\u53d6\u5668\uff0c\u7136\u540e\u9010\u884c\u8bfb\u53d6\u6570\u636e\u3002\u4f7f\u7528<code>pandas<\/code>\u5e93\u5219\u66f4\u4e3a\u7b80\u4fbf\uff0c\u53ea\u9700\u8c03\u7528<code>pandas.read_csv()<\/code>\u51fd\u6570\uff0c\u5e76\u4f20\u5165\u6587\u4ef6\u8def\u5f84\u5373\u53ef\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u9ad8\u6548\uff0c\u8fd8\u652f\u6301\u591a\u79cd\u6570\u636e\u5904\u7406\u529f\u80fd\u3002<\/p>\n<p><strong>\u4f7f\u7528Pandas\u8bfb\u53d6CSV\u6587\u4ef6\u65f6\uff0c\u5982\u4f55\u5904\u7406\u7f3a\u5931\u503c\uff1f<\/strong><br \/>\u4f7f\u7528<code>pandas<\/code>\u8bfb\u53d6CSV\u6587\u4ef6\u540e\uff0c\u53ef\u4ee5\u901a\u8fc7<code>dropna()<\/code>\u51fd\u6570\u5220\u9664\u542b\u6709\u7f3a\u5931\u503c\u7684\u884c\uff0c\u6216\u4f7f\u7528<code>fillna()<\/code>\u51fd\u6570\u66ff\u6362\u7f3a\u5931\u503c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5c06\u7f3a\u5931\u503c\u586b\u5145\u4e3a0\u6216\u67d0\u4e2a\u7279\u5b9a\u7684\u503c\uff0c\u786e\u4fdd\u6570\u636e\u7684\u5b8c\u6574\u6027\u3002\u8fd9\u4e9b\u529f\u80fd\u975e\u5e38\u9002\u5408\u5728\u6e38\u620f\u6570\u636e\u5206\u6790\u4e2d\u8fdb\u884c\u66f4\u51c6\u786e\u7684\u7edf\u8ba1\u3002<\/p>\n<p><strong>\u5728\u8bfb\u53d6CSV\u6587\u4ef6\u540e\uff0c\u5982\u4f55\u5bf9\u6570\u636e\u8fdb\u884c\u5206\u6790\u548c\u53ef\u89c6\u5316\uff1f<\/strong><br \/>\u8bfb\u53d6CSV\u6587\u4ef6\u540e\uff0c\u53ef\u4ee5\u5229\u7528<code>pandas<\/code>\u63d0\u4f9b\u7684\u5404\u79cd\u6570\u636e\u5904\u7406\u529f\u80fd\uff0c\u5982\u6570\u636e\u5206\u7ec4\u3001\u805a\u5408\u3001\u6392\u5e8f\u7b49\u3002\u540c\u65f6\uff0c\u53ef\u4ee5\u7ed3\u5408<code>matplotlib<\/code>\u6216<code>seaborn<\/code>\u7b49\u53ef\u89c6\u5316\u5e93\uff0c\u521b\u5efa\u56fe\u8868\u5c55\u793a\u6570\u636e\u8d8b\u52bf\u548c\u6a21\u5f0f\u3002\u8fd9\u5bf9\u4e8e\u6e38\u620f\u5f00\u53d1\u8005\u548c\u6570\u636e\u5206\u6790\u5e08\u6765\u8bf4\uff0c\u80fd\u591f\u5e2e\u52a9\u66f4\u597d\u5730\u7406\u89e3\u73a9\u5bb6\u884c\u4e3a\u548c\u6e38\u620f\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u4f7f\u7528Python\u8bfb\u53d6CSV\u6587\u4ef6\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff0c\u5e38\u7528\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u7684csv\u6a21\u5757\u3001pandas\u5e93\u3001\u4ee5\u53canu [&hellip;]","protected":false},"author":3,"featured_media":953392,"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\/953384"}],"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=953384"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/953384\/revisions"}],"predecessor-version":[{"id":953395,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/953384\/revisions\/953395"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/953392"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=953384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=953384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=953384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}