{"id":1077230,"date":"2025-01-08T12:00:23","date_gmt":"2025-01-08T04:00:23","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1077230.html"},"modified":"2025-01-08T12:00:25","modified_gmt":"2025-01-08T04:00:25","slug":"python%e5%a6%82%e4%bd%95%e8%af%bb%e5%85%a5csv%e7%9a%84%e6%97%b6%e5%80%99%e4%b8%8d%e8%af%bb%e8%a1%a8%e5%a4%b4-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1077230.html","title":{"rendered":"python\u5982\u4f55\u8bfb\u5165csv\u7684\u65f6\u5019\u4e0d\u8bfb\u8868\u5934"},"content":{"rendered":"

\"python\u5982\u4f55\u8bfb\u5165csv\u7684\u65f6\u5019\u4e0d\u8bfb\u8868\u5934\"<\/p>\n

\u8981\u5728\u4f7f\u7528Python\u8bfb\u5165CSV\u6587\u4ef6\u65f6\u4e0d\u8bfb\u5165\u8868\u5934\uff0c\u4e3b\u8981\u6709\u51e0\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528csv\u6a21\u5757\u3001pandas\u5e93\u3001\u548cnumpy\u5e93<\/strong>\u3002\u5176\u4e2d\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528pandas\u5e93\uff0c\u56e0\u4e3a\u5b83\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u6570\u636e\u5904\u7406\u529f\u80fd\u548c\u7b80\u5355\u6613\u7528\u7684API\u3002\u901a\u8fc7\u6307\u5b9a\u53c2\u6570\u3001\u8df3\u8fc7\u7279\u5b9a\u884c\u3001\u4f7f\u7528\u8fed\u4ee3\u5668<\/strong>\u7b49\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u4e0d\u8bfb\u5165\u8868\u5934\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u63cf\u8ff0\u8fd9\u4e9b\u65b9\u6cd5\u53ca\u5176\u5b9e\u73b0\u65b9\u5f0f\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528csv\u6a21\u5757<\/h3>\n<\/p>\n

\u4f7f\u7528csv\u6a21\u5757\u53ef\u4ee5\u7075\u6d3b\u5730\u63a7\u5236\u6587\u4ef6\u7684\u8bfb\u53d6\u8fc7\u7a0b\u3002\u53ef\u4ee5\u901a\u8fc7\u8df3\u8fc7\u7b2c\u4e00\u884c\u6765\u5b9e\u73b0\u4e0d\u8bfb\u5165\u8868\u5934\u3002<\/p>\n<\/p>\n

1\u3001\u793a\u4f8b\u4ee3\u7801<\/h4>\n<\/p>\n

import csv<\/p>\n
filename = 'example.csv'<\/p>\n
with open(filename, newline='') as csvfile:<\/p>\n
    csvreader = csv.reader(csvfile)<\/p>\n
    next(csvreader)  # \u8df3\u8fc7\u7b2c\u4e00\u884c\uff08\u8868\u5934\uff09<\/p>\n
    for row in csvreader:<\/p>\n
        print(row)<\/p>\n
<\/code><\/pre>\n<\/p>\n
2\u3001\u89e3\u91ca<\/h4>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0cnext(csvreader)<\/code>\u8bed\u53e5\u7528\u4e8e\u8bfb\u53d6\u5e76\u8df3\u8fc7\u7b2c\u4e00\u884c\uff08\u8868\u5934\uff09\uff0c\u7136\u540e\u5faa\u73af\u8bfb\u53d6\u6bcf\u4e00\u884c\u6570\u636e\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5ffd\u7565CSV\u6587\u4ef6\u4e2d\u7684\u8868\u5934\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528pandas\u5e93<\/h3>\n<\/p>\n
pandas\u5e93\u662f\u6570\u636e\u5206\u6790\u4e2d\u5e38\u7528\u7684\u5de5\u5177\uff0c\u5b83\u63d0\u4f9b\u4e86\u7b80\u4fbf\u7684\u65b9\u6cd5\u6765\u5904\u7406CSV\u6587\u4ef6\u3002\u53ef\u4ee5\u901a\u8fc7skiprows<\/code>\u53c2\u6570\u6765\u8df3\u8fc7\u8868\u5934\u3002<\/p>\n<\/p>\n
1\u3001\u793a\u4f8b\u4ee3\u7801<\/h4>\n<\/p>\n
import pandas as pd<\/p>\n
filename = 'example.csv'<\/p>\n
data = pd.read_csv(filename, skiprows=1)<\/p>\n
print(data)<\/p>\n
<\/code><\/pre>\n<\/p>\n
2\u3001\u89e3\u91ca<\/h4>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0cskiprows=1<\/code>\u53c2\u6570\u544a\u8bc9pandas\u8df3\u8fc7\u7b2c\u4e00\u884c\uff08\u8868\u5934\uff09\uff0c\u8fd9\u6837data<\/code>\u53d8\u91cf\u4e2d\u5b58\u50a8\u7684\u5c31\u662f\u4e0d\u5305\u542b\u8868\u5934\u7684\u6570\u636e\u3002pandas\u63d0\u4f9b\u4e86\u66f4\u591a\u5f3a\u5927\u7684\u529f\u80fd\uff0c\u4f8b\u5982\u5904\u7406\u7f3a\u5931\u503c\u3001\u6570\u636e\u900f\u89c6\u8868\u7b49<\/strong>\uff0c\u5728\u6570\u636e\u5206\u6790\u4e2d\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528numpy\u5e93<\/h3>\n<\/p>\n
numpy\u5e93\u662f\u8fdb\u884c\u6570\u503c\u8ba1\u7b97\u7684\u57fa\u7840\u5e93\uff0c\u4e5f\u53ef\u4ee5\u7528\u4e8e\u8bfb\u53d6CSV\u6587\u4ef6\u5e76\u8df3\u8fc7\u8868\u5934\u3002<\/p>\n<\/p>\n
1\u3001\u793a\u4f8b\u4ee3\u7801<\/h4>\n<\/p>\n
import numpy as np<\/p>\n
filename = 'example.csv'<\/p>\n
data = np.genfromtxt(filename, delimiter=',', skip_header=1)<\/p>\n
print(data)<\/p>\n
<\/code><\/pre>\n<\/p>\n
2\u3001\u89e3\u91ca<\/h4>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0cskip_header=1<\/code>\u53c2\u6570\u544a\u8bc9numpy\u8df3\u8fc7CSV\u6587\u4ef6\u7684\u7b2c\u4e00\u884c\uff08\u8868\u5934\uff09\uff0cdelimiter=','<\/code>\u53c2\u6570\u6307\u5b9a\u4e86CSV\u6587\u4ef6\u7684\u5206\u9694\u7b26\u3002\u8fd9\u6837data<\/code>\u53d8\u91cf\u4e2d\u5b58\u50a8\u7684\u5c31\u662f\u4e0d\u5305\u542b\u8868\u5934\u7684\u6570\u636e\u3002<\/p>\n<\/p>\n
\u56db\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u603b\u7ed3\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u4f7f\u7528pandas\u5e93\u662f\u6700\u63a8\u8350\u7684\u65b9\u5f0f<\/strong>\uff0c\u56e0\u4e3a\u5b83\u4e0d\u4ec5\u53ef\u4ee5\u8f7b\u677e\u8df3\u8fc7\u8868\u5934\uff0c\u8fd8\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u6570\u636e\u5904\u7406\u529f\u80fd\u3002\u5728\u4f7f\u7528pandas\u5e93\u65f6\uff0c\u53ea\u9700\u8bbe\u7f6eskiprows<\/code>\u53c2\u6570\u5373\u53ef\u8df3\u8fc7\u8868\u5934\uff0c\u4ece\u800c\u7b80\u5316\u4e86\u6570\u636e\u5904\u7406\u6d41\u7a0b\u3002<\/p>\n<\/p>\n
1\u3001\u7075\u6d3b\u6027<\/h4>\n<\/p>\n
    \n
  • csv\u6a21\u5757<\/strong>\uff1a\u9002\u7528\u4e8e\u8f83\u5c0f\u7684CSV\u6587\u4ef6\uff0c\u7075\u6d3b\u6027\u9ad8\uff0c\u53ef\u4ee5\u81ea\u5b9a\u4e49\u5904\u7406\u6bcf\u4e00\u884c\u6570\u636e\u3002<\/li>\n
  • pandas\u5e93<\/strong>\uff1a\u9002\u7528\u4e8e\u8f83\u5927\u7684CSV\u6587\u4ef6\u548c\u590d\u6742\u7684\u6570\u636e\u5904\u7406\u4efb\u52a1\uff0c\u529f\u80fd\u5f3a\u5927\uff0c\u7b80\u4fbf\u6613\u7528\u3002<\/li>\n
  • numpy\u5e93<\/strong>\uff1a\u9002\u7528\u4e8e\u6570\u503c\u8ba1\u7b97\u548c\u79d1\u5b66\u8ba1\u7b97\uff0c\u4e0epandas\u5e93\u7ed3\u5408\u4f7f\u7528\u6548\u679c\u66f4\u4f73\u3002<\/li>\n<\/ul>\n
    2\u3001\u6027\u80fd<\/h4>\n<\/p>\n
      \n
    • pandas\u5e93<\/strong>\u548cnumpy\u5e93<\/strong>\u5728\u5904\u7406\u5927\u6570\u636e\u96c6\u65f6\u6027\u80fd\u8f83\u597d\uff0c\u63a8\u8350\u7528\u4e8e\u6570\u636e\u91cf\u8f83\u5927\u7684\u573a\u666f\u3002<\/li>\n
    • csv\u6a21\u5757<\/strong>\u9002\u7528\u4e8e\u6570\u636e\u91cf\u8f83\u5c0f\u7684\u573a\u666f\uff0c\u7075\u6d3b\u6027\u9ad8\u4f46\u6027\u80fd\u76f8\u5bf9\u8f83\u4f4e\u3002<\/li>\n<\/ul>\n
      \u901a\u8fc7\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u8bfb\u53d6CSV\u6587\u4ef6\u65f6\u4e0d\u8bfb\u5165\u8868\u5934\u7684\u9700\u6c42\u3002\u6839\u636e\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u5904\u7406\u7684\u6548\u7387\u548c\u7b80\u4fbf\u6027\u3002<\/p>\n<\/p>\n
      \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
       \u5982\u4f55\u5728\u4f7f\u7528Python\u8bfb\u53d6CSV\u6587\u4ef6\u65f6\u8df3\u8fc7\u8868\u5934\uff1f<\/strong>
      \u5728\u8bfb\u53d6CSV\u6587\u4ef6\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528pandas\u5e93\u7684read_csv()<\/code>\u65b9\u6cd5\u5e76\u8bbe\u7f6eheader=None<\/code>\u6765\u8df3\u8fc7\u8868\u5934\u3002\u8fd9\u5c06\u4f7f\u5f97\u6587\u4ef6\u7684\u7b2c\u4e00\u884c\u6570\u636e\u88ab\u89c6\u4e3a\u6570\u636e\u7684\u4e00\u90e8\u5206\uff0c\u800c\u4e0d\u662f\u5217\u540d\u3002<\/p>\n
      \u53ef\u4ee5\u4f7f\u7528\u54ea\u4e9b\u5e93\u6765\u8bfb\u53d6CSV\u6587\u4ef6\u800c\u4e0d\u5305\u542b\u8868\u5934\uff1f<\/strong>
      \u9664\u4e86pandas\uff0cPython\u7684\u5185\u7f6ecsv<\/code>\u5e93\u4e5f\u53ef\u4ee5\u8bfb\u53d6CSV\u6587\u4ef6\u3002\u4f7f\u7528csv.reader()<\/code>\u51fd\u6570\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528next(reader)<\/code>\u6765\u8df3\u8fc7\u7b2c\u4e00\u884c\uff0c\u4ece\u800c\u4e0d\u8bfb\u53d6\u8868\u5934\u3002<\/p>\n
      \u5982\u679c\u6211\u60f3\u5728\u4e0d\u52a0\u8f7d\u6574\u4e2aCSV\u6587\u4ef6\u7684\u60c5\u51b5\u4e0b\u8bfb\u53d6\u6570\u636e\uff0c\u8be5\u600e\u4e48\u505a\uff1f<\/strong>
      \u53ef\u4ee5\u4f7f\u7528pandas\u7684chunksize<\/code>\u53c2\u6570\u6765\u5206\u5757\u8bfb\u53d6CSV\u6587\u4ef6\uff0c\u8fd9\u6837\u53ef\u4ee5\u5728\u8bfb\u53d6\u65f6\u9009\u62e9\u8df3\u8fc7\u8868\u5934\u3002\u901a\u8fc7\u8bbe\u7f6eheader=None<\/code>\u548cchunksize<\/code>\uff0c\u53ef\u4ee5\u9010\u5757\u5904\u7406\u6570\u636e\uff0c\u800c\u4e0d\u4f1a\u5c06\u6574\u4e2a\u6587\u4ef6\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\u3002<\/p>\n
      \u5982\u4f55\u9a8c\u8bc1\u6211\u8bfb\u53d6\u7684CSV\u6587\u4ef6\u662f\u5426\u6210\u529f\u4e14\u6ca1\u6709\u5305\u542b\u8868\u5934\uff1f<\/strong>
      \u53ef\u4ee5\u901a\u8fc7\u6253\u5370\u8bfb\u53d6\u7684\u6570\u636e\u7684\u524d\u51e0\u884c\u6765\u9a8c\u8bc1\u3002\u4f8b\u5982\uff0c\u5728\u4f7f\u7528pandas\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528df.head()<\/code>\u65b9\u6cd5\u67e5\u770b\u6570\u636e\u7684\u5f00\u5934\u90e8\u5206\u3002\u5982\u679c\u8f93\u51fa\u7684\u7b2c\u4e00\u884c\u6570\u636e\u4e0e\u9884\u671f\u4e00\u81f4\uff0c\u5219\u8868\u660e\u6210\u529f\u8df3\u8fc7\u4e86\u8868\u5934\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u8981\u5728\u4f7f\u7528Python\u8bfb\u5165CSV\u6587\u4ef6\u65f6\u4e0d\u8bfb\u5165\u8868\u5934\uff0c\u4e3b\u8981\u6709\u51e0\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528csv\u6a21\u5757\u3001pandas\u5e93\u3001\u548cnumpy\u5e93 […]","protected":false},"author":3,"featured_media":1077238,"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\/1077230"}],"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=1077230"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1077230\/revisions"}],"predecessor-version":[{"id":1077240,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1077230\/revisions\/1077240"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1077238"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1077230"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1077230"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1077230"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}