{"id":1003679,"date":"2024-12-27T10:19:21","date_gmt":"2024-12-27T02:19:21","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1003679.html"},"modified":"2024-12-27T10:19:23","modified_gmt":"2024-12-27T02:19:23","slug":"%e5%a6%82%e4%bd%95%e6%8a%8a%e6%96%87%e4%bb%b6%e5%af%bc%e5%85%a5python","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1003679.html","title":{"rendered":"\u5982\u4f55\u628a\u6587\u4ef6\u5bfc\u5165python"},"content":{"rendered":"

\"\u5982\u4f55\u628a\u6587\u4ef6\u5bfc\u5165python\"<\/p>\n

\u8981\u5c06\u6587\u4ef6\u5bfc\u5165Python\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u51fd\u6570\u3001\u7b2c\u4e09\u65b9\u5e93\u4ee5\u53caPython\u81ea\u5e26\u7684\u6a21\u5757\u3002\u5e38\u89c1\u7684\u65b9\u6cd5\u6709\u4f7f\u7528open()\u51fd\u6570\u3001pandas\u5e93\u3001csv\u6a21\u5757\u7b49\u3002\u4f7f\u7528open()\u51fd\u6570\u53ef\u4ee5\u8bfb\u53d6\u6587\u672c\u6587\u4ef6\u3001pandas\u5e93\u9002\u5408\u5904\u7406\u6570\u636e\u8868\u683c\u3001csv\u6a21\u5757\u4e13\u95e8\u7528\u4e8e\u8bfb\u53d6\u548c\u5199\u5165CSV\u6587\u4ef6\u3002<\/strong>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63a2\u8ba8\u8fd9\u4e9b\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528OPEN()\u51fd\u6570\u5bfc\u5165\u6587\u4ef6<\/p>\n<\/p>\n

open()\u51fd\u6570\u662fPython\u5185\u7f6e\u7684\u4e00\u4e2a\u7528\u4e8e\u6253\u5f00\u6587\u4ef6\u7684\u51fd\u6570\uff0c\u9002\u7528\u4e8e\u8bfb\u53d6\u6587\u672c\u6587\u4ef6\u3002<\/p>\n<\/p>\n

    \n
  1. \n

    \u57fa\u672c\u4f7f\u7528\u65b9\u6cd5<\/strong><\/p>\n<\/p>\n

    \u4f7f\u7528open()\u51fd\u6570\u6253\u5f00\u6587\u4ef6\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528read()\u3001readline()\u3001readlines()\u7b49\u65b9\u6cd5\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u3002open()\u51fd\u6570\u7684\u57fa\u672c\u8bed\u6cd5\u4e3aopen(filename, mode)<\/code>\uff0c\u5176\u4e2dfilename<\/code>\u662f\u6587\u4ef6\u7684\u8def\u5f84\uff0cmode<\/code>\u662f\u6587\u4ef6\u6253\u5f00\u7684\u6a21\u5f0f\uff0c\u5982'r'\u8868\u793a\u53ea\u8bfb\uff0c'w'\u8868\u793a\u5199\u5165\uff0c'a'\u8868\u793a\u8ffd\u52a0\u3002<\/p>\n<\/p>\n<\/li>\n

  2. \n

    \u5b9e\u4f8b\uff1a\u8bfb\u53d6\u6587\u672c\u6587\u4ef6<\/strong><\/p>\n<\/p>\n

    \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3aexample.txt<\/code>\u7684\u6587\u672c\u6587\u4ef6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u5c06\u5176\u5bfc\u5165Python\uff1a<\/p>\n<\/p>\n

    with open('example.txt', 'r') as file:<\/p>\n
        content = file.read()<\/p>\n
        print(content)<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u8fd9\u91cc\u4f7f\u7528with<\/code>\u8bed\u53e5\u6253\u5f00\u6587\u4ef6\u53ef\u4ee5\u786e\u4fdd\u5728\u8bfb\u53d6\u5b8c\u6587\u4ef6\u540e\u81ea\u52a8\u5173\u95ed\u6587\u4ef6\uff0c\u907f\u514d\u8d44\u6e90\u6cc4\u6f0f\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
    \u4e8c\u3001\u4f7f\u7528PANDAS\u5e93\u5bfc\u5165\u6587\u4ef6<\/p>\n<\/p>\n
    Pandas\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u5e93\uff0c\u7279\u522b\u9002\u5408\u7528\u4e8e\u5904\u7406\u7ed3\u6784\u5316\u6570\u636e\uff0c\u5982CSV\u3001Excel\u6587\u4ef6\u7b49\u3002<\/p>\n<\/p>\n
      \n
    1. \n
      \u5b89\u88c5Pandas<\/strong><\/p>\n<\/p>\n
      \u5728\u4f7f\u7528Pandas\u4e4b\u524d\uff0c\u786e\u4fdd\u5df2\u5b89\u88c5\u8be5\u5e93\u3002\u53ef\u4ee5\u901a\u8fc7pip\u547d\u4ee4\u5b89\u88c5\uff1a<\/p>\n<\/p>\n
      pip install pandas<\/p>\n
      <\/code><\/pre>\n<\/p>\n<\/li>\n
    2. \n
      \u5bfc\u5165CSV\u6587\u4ef6<\/strong><\/p>\n<\/p>\n
      Pandas\u63d0\u4f9b\u4e86read_csv()<\/code>\u51fd\u6570\u7528\u4e8e\u8bfb\u53d6CSV\u6587\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u57fa\u672c\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
      import pandas as pd<\/p>\n
      df = pd.read_csv('data.csv')<\/p>\n
      print(df.head())<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      read_csv()<\/code>\u51fd\u6570\u4f1a\u8fd4\u56de\u4e00\u4e2aDataFrame\u5bf9\u8c61\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u8fdb\u884c\u6570\u636e\u5206\u6790\u548c\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<\/li>\n
    3. \n
      \u5bfc\u5165Excel\u6587\u4ef6<\/strong><\/p>\n<\/p>\n
      \u9664\u4e86CSV\u6587\u4ef6\uff0cPandas\u4e5f\u652f\u6301\u8bfb\u53d6Excel\u6587\u4ef6\u3002\u53ef\u4ee5\u4f7f\u7528read_excel()<\/code>\u51fd\u6570\uff1a<\/p>\n<\/p>\n
      df = pd.read_excel('data.xlsx')<\/p>\n
      print(df.head())<\/p>\n
      <\/code><\/pre>\n<\/p>\n<\/li>\n<\/ol>\n
      \u4e09\u3001\u4f7f\u7528CSV\u6a21\u5757\u5bfc\u5165CSV\u6587\u4ef6<\/p>\n<\/p>\n
      CSV\u6a21\u5757\u662fPython\u5185\u7f6e\u7684\u4e00\u4e2a\u7528\u4e8e\u5904\u7406CSV\u6587\u4ef6\u7684\u6a21\u5757\uff0c\u9002\u5408\u7b80\u5355\u7684CSV\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
        \n
      1. \n
        \u8bfb\u53d6CSV\u6587\u4ef6<\/strong><\/p>\n<\/p>\n
        \u4f7f\u7528csv.reader()\u53ef\u4ee5\u5c06CSV\u6587\u4ef6\u9010\u884c\u8bfb\u53d6\uff0c\u8fd4\u56de\u4e00\u4e2a\u8fed\u4ee3\u5668\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
        import csv<\/p>\n
        with open('data.csv', newline='') as csvfile:<\/p>\n
            reader = csv.reader(csvfile)<\/p>\n
            for row in reader:<\/p>\n
                print(', '.join(row))<\/p>\n
        <\/code><\/pre>\n<\/p>\n<\/li>\n
      2. \n
        \u5199\u5165CSV\u6587\u4ef6<\/strong><\/p>\n<\/p>\n
        csv.writer()\u7528\u4e8e\u5c06\u6570\u636e\u5199\u5165CSV\u6587\u4ef6\uff1a<\/p>\n<\/p>\n
        with open('output.csv', 'w', newline='') as csvfile:<\/p>\n
            writer = csv.writer(csvfile)<\/p>\n
            writer.writerow(['Name', 'Age', 'City'])<\/p>\n
            writer.writerow(['Alice', 30, 'New York'])<\/p>\n
        <\/code><\/pre>\n<\/p>\n<\/li>\n<\/ol>\n
        \u56db\u3001\u4f7f\u7528JSON\u6a21\u5757\u5bfc\u5165JSON\u6587\u4ef6<\/p>\n<\/p>\n
        JSON\u662f\u4e00\u79cd\u5e38\u7528\u7684\u6570\u636e\u4ea4\u6362\u683c\u5f0f\uff0cPython\u63d0\u4f9b\u4e86json\u6a21\u5757\u7528\u4e8e\u5904\u7406JSON\u6587\u4ef6\u3002<\/p>\n<\/p>\n
          \n
        1. \n
          \u8bfb\u53d6JSON\u6587\u4ef6<\/strong><\/p>\n<\/p>\n
          \u53ef\u4ee5\u4f7f\u7528json.load()\u5c06JSON\u6587\u4ef6\u8bfb\u53d6\u4e3aPython\u5bf9\u8c61\uff1a<\/p>\n<\/p>\n
          import json<\/p>\n
          with open('data.json') as json_file:<\/p>\n
              data = json.load(json_file)<\/p>\n
              print(data)<\/p>\n
          <\/code><\/pre>\n<\/p>\n<\/li>\n
        2. \n
          \u5199\u5165JSON\u6587\u4ef6<\/strong><\/p>\n<\/p>\n
          \u4f7f\u7528json.dump()\u53ef\u4ee5\u5c06Python\u5bf9\u8c61\u5199\u5165JSON\u6587\u4ef6\uff1a<\/p>\n<\/p>\n
          data = {'name': 'Alice', 'age': 30, 'city': 'New York'}<\/p>\n
          with open('output.json', 'w') as json_file:<\/p>\n
              json.dump(data, json_file)<\/p>\n
          <\/code><\/pre>\n<\/p>\n<\/li>\n<\/ol>\n
          \u4e94\u3001\u4f7f\u7528NUMPY\u5e93\u5bfc\u5165\u6587\u4ef6<\/p>\n<\/p>\n
          Numpy\u662f\u4e00\u4e2a\u7528\u4e8e\u79d1\u5b66\u8ba1\u7b97\u7684\u5e93\uff0c\u9002\u5408\u5904\u7406\u6570\u503c\u578b\u6570\u636e\u3002<\/p>\n<\/p>\n
            \n
          1. \n
            \u5b89\u88c5Numpy<\/strong><\/p>\n<\/p>\n
            \u5b89\u88c5Numpy\u53ef\u4ee5\u4f7f\u7528pip\u547d\u4ee4\uff1a<\/p>\n<\/p>\n
            pip install numpy<\/p>\n
            <\/code><\/pre>\n<\/p>\n<\/li>\n
          2. \n
            \u5bfc\u5165\u6587\u672c\u6587\u4ef6<\/strong><\/p>\n<\/p>\n
            \u4f7f\u7528numpy.loadtxt()\u53ef\u4ee5\u5c06\u6587\u672c\u6587\u4ef6\u8bfb\u53d6\u4e3a\u6570\u7ec4\uff1a<\/p>\n<\/p>\n
            import numpy as np<\/p>\n
            data = np.loadtxt('data.txt')<\/p>\n
            print(data)<\/p>\n
            <\/code><\/pre>\n<\/p>\n<\/li>\n
          3. \n
            \u5bfc\u5165CSV\u6587\u4ef6<\/strong><\/p>\n<\/p>\n
            Numpy\u4e5f\u53ef\u4ee5\u7528\u4e8e\u8bfb\u53d6CSV\u6587\u4ef6\uff1a<\/p>\n<\/p>\n
            data = np.genfromtxt('data.csv', delimiter=',')<\/p>\n
            print(data)<\/p>\n
            <\/code><\/pre>\n<\/p>\n<\/li>\n<\/ol>\n
            \u516d\u3001\u4f7f\u7528OS\u6a21\u5757\u8bfb\u53d6\u76ee\u5f55\u4e2d\u7684\u6587\u4ef6<\/p>\n<\/p>\n
            \u6709\u65f6\u5019\uff0c\u6211\u4eec\u9700\u8981\u8bfb\u53d6\u67d0\u4e2a\u76ee\u5f55\u4e0b\u7684\u6240\u6709\u6587\u4ef6\uff0cPython\u7684os\u6a21\u5757\u63d0\u4f9b\u4e86\u4fbf\u6377\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
              \n
            1. \n
              \u5217\u51fa\u76ee\u5f55\u4e2d\u7684\u6587\u4ef6<\/strong><\/p>\n<\/p>\n
              \u4f7f\u7528os.listdir()\u53ef\u4ee5\u5217\u51fa\u6307\u5b9a\u76ee\u5f55\u4e2d\u7684\u6240\u6709\u6587\u4ef6\u548c\u6587\u4ef6\u5939\uff1a<\/p>\n<\/p>\n
              import os<\/p>\n
              files = os.listdir('my_directory')<\/p>\n
              for file in files:<\/p>\n
                  print(file)<\/p>\n
              <\/code><\/pre>\n<\/p>\n<\/li>\n
            2. \n
              \u8bfb\u53d6\u7279\u5b9a\u7c7b\u578b\u7684\u6587\u4ef6<\/strong><\/p>\n<\/p>\n
              \u53ef\u4ee5\u7ed3\u5408\u5b57\u7b26\u4e32\u64cd\u4f5c\u548cos\u6a21\u5757\uff0c\u8bfb\u53d6\u7279\u5b9a\u7c7b\u578b\u7684\u6587\u4ef6\uff1a<\/p>\n<\/p>\n
              txt_files = [f for f in files if f.endswith('.txt')]<\/p>\n
              for txt_file in txt_files:<\/p>\n
                  with open(os.path.join('my_directory', txt_file)) as file:<\/p>\n
                      print(file.read())<\/p>\n
              <\/code><\/pre>\n<\/p>\n<\/li>\n<\/ol>\n
              \u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u4f60\u53ef\u4ee5\u6839\u636e\u9700\u8981\u9009\u62e9\u9002\u5408\u7684\u65b9\u5f0f\u5c06\u6587\u4ef6\u5bfc\u5165Python\u8fdb\u884c\u5904\u7406\u3002\u65e0\u8bba\u662f\u7b80\u5355\u7684\u6587\u672c\u6587\u4ef6\uff0c\u8fd8\u662f\u590d\u6742\u7684\u7ed3\u6784\u5316\u6570\u636e\u6587\u4ef6\uff0cPython\u90fd\u63d0\u4f9b\u4e86\u76f8\u5e94\u7684\u5de5\u5177\u548c\u5e93\u6765\u5e2e\u52a9\u4f60\u8f7b\u677e\u5730\u8fdb\u884c\u6570\u636e\u5bfc\u5165\u548c\u5904\u7406\u3002<\/p>\n<\/p>\n
              \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
               \u5982\u4f55\u5728Python\u4e2d\u8bfb\u53d6\u4e0d\u540c\u683c\u5f0f\u7684\u6587\u4ef6\uff1f<\/strong>
              \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684open()<\/code>\u51fd\u6570\u6765\u8bfb\u53d6\u6587\u672c\u6587\u4ef6\u3002\u5bf9\u4e8eCSV\u6587\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528csv<\/code>\u6a21\u5757\uff0c\u800c\u5bf9\u4e8eExcel\u6587\u4ef6\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528pandas<\/code>\u5e93\u3002\u5bf9\u4e8eJSON\u6587\u4ef6\uff0cjson<\/code>\u6a21\u5757\u53ef\u4ee5\u8f7b\u677e\u5904\u7406\u3002\u901a\u8fc7\u8fd9\u4e9b\u5de5\u5177\uff0c\u60a8\u53ef\u4ee5\u65b9\u4fbf\u5730\u8bfb\u53d6\u548c\u5904\u7406\u5404\u79cd\u683c\u5f0f\u7684\u6587\u4ef6\u6570\u636e\u3002<\/p>\n
              \u5bfc\u5165\u6587\u4ef6\u65f6\uff0c\u5982\u4f55\u5904\u7406\u7f16\u7801\u95ee\u9898\uff1f<\/strong>
              \u5728\u5bfc\u5165\u6587\u4ef6\u65f6\uff0c\u6587\u4ef6\u7684\u7f16\u7801\u683c\u5f0f\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8bfb\u53d6\u9519\u8bef\u3002\u5e38\u89c1\u7684\u7f16\u7801\u683c\u5f0f\u5305\u62ecUTF-8\u548cISO-8859-1\u3002\u53ef\u4ee5\u5728\u4f7f\u7528open()<\/code>\u51fd\u6570\u65f6\u6307\u5b9aencoding<\/code>\u53c2\u6570\uff0c\u4f8b\u5982open('filename.txt', 'r', encoding='utf-8')<\/code>\u3002\u5982\u679c\u4e0d\u786e\u5b9a\u6587\u4ef6\u7684\u7f16\u7801\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528chardet<\/code>\u5e93\u6765\u8fdb\u884c\u81ea\u52a8\u68c0\u6d4b\u3002<\/p>\n
              \u5982\u4f55\u5c06\u5bfc\u5165\u7684\u6587\u4ef6\u6570\u636e\u8f6c\u6362\u4e3aPython\u5bf9\u8c61\uff1f<\/strong>
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