{"id":949345,"date":"2024-12-27T00:12:01","date_gmt":"2024-12-26T16:12:01","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/949345.html"},"modified":"2024-12-27T00:12:03","modified_gmt":"2024-12-26T16:12:03","slug":"python%e5%a6%82%e4%bd%95replace%e5%bc%95%e5%8f%b7","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/949345.html","title":{"rendered":"python\u5982\u4f55replace\u5f15\u53f7"},"content":{"rendered":"

\"python\u5982\u4f55replace\u5f15\u53f7\"<\/p>\n

\u4e00\u3001PYTHON\u4e2dREPLACE\u5f15\u53f7\u7684\u65b9\u6cd5\u6982\u8ff0 <\/p>\n<\/p>\n

\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u7684replace()<\/code>\u65b9\u6cd5\u6765\u66ff\u6362\u5f15\u53f7\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u7684re.sub()<\/code>\u65b9\u6cd5\u8fdb\u884c\u66ff\u6362\u3001\u501f\u52a9\u5b57\u7b26\u4e32\u7684\u7ffb\u8bd1\u65b9\u6cd5translate()<\/code><\/strong>\u3002\u5982\u679c\u8981\u66ff\u6362\u5355\u5f15\u53f7\u6216\u53cc\u5f15\u53f7\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u7684replace()<\/code>\u65b9\u6cd5\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u7b80\u5355\u6613\u7528\uff0c\u5e76\u4e14\u662f\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u5728\u4f7f\u7528replace()<\/code>\u65b9\u6cd5\u65f6\uff0c\u9700\u8981\u6307\u5b9a\u8981\u66ff\u6362\u7684\u5b57\u7b26\u548c\u66ff\u6362\u540e\u7684\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u5982\u679c\u8981\u5c06\u5355\u5f15\u53f7\u66ff\u6362\u4e3a\u53cc\u5f15\u53f7\uff0c\u53ef\u4ee5\u4f7f\u7528str.replace("'", '"')<\/code>\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u7b80\u5355\u7684\u66ff\u6362\u573a\u666f\uff0c\u5e76\u4e14\u6027\u80fd\u8f83\u597d\u3002<\/p>\n<\/p>\n

\u4e8c\u3001PYTHON\u4e2d\u4f7f\u7528REPLACE()\u65b9\u6cd5\u66ff\u6362\u5f15\u53f7 <\/p>\n<\/p>\n

replace()<\/code>\u65b9\u6cd5\u662fPython\u4e2d\u5b57\u7b26\u4e32\u5bf9\u8c61\u7684\u4e00\u4e2a\u65b9\u6cd5\uff0c\u7528\u4e8e\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u67d0\u4e2a\u5b50\u5b57\u7b26\u4e32\u66ff\u6362\u4e3a\u53e6\u4e00\u4e2a\u5b50\u5b57\u7b26\u4e32\u3002 <\/p>\n<\/p>\n

    \n
  1. \n

    \u57fa\u672c\u7528\u6cd5<\/strong>
    replace()<\/code>\u65b9\u6cd5\u7684\u57fa\u672c\u8bed\u6cd5\u662fstr.replace(old, new[, count])<\/code>\u3002\u5176\u4e2dold<\/code>\u662f\u8981\u88ab\u66ff\u6362\u7684\u5b50\u5b57\u7b26\u4e32\uff0cnew<\/code>\u662f\u66ff\u6362\u540e\u7684\u5b50\u5b57\u7b26\u4e32\uff0ccount<\/code>\u662f\u53ef\u9009\u53c2\u6570\uff0c\u8868\u793a\u66ff\u6362\u7684\u6b21\u6570\u3002\u5982\u679c\u4e0d\u6307\u5b9acount<\/code>\uff0c\u5219\u4f1a\u66ff\u6362\u6240\u6709\u5339\u914d\u7684\u5b50\u5b57\u7b26\u4e32\u3002 <\/p>\n<\/p>\n

    \u4f8b\u5982\uff0c\u5047\u8bbe\u6709\u4e00\u4e2a\u5b57\u7b26\u4e32text = "Hello, I'm a Python developer."<\/code>\uff0c\u8981\u5c06\u5176\u4e2d\u7684\u5355\u5f15\u53f7\u66ff\u6362\u4e3a\u53cc\u5f15\u53f7\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a <\/p>\n<\/p>\n

    text = "Hello, I'm a Python developer."  <\/p>\n
    new_text = text.replace("'", '"')  <\/p>\n
    print(new_text)  # \u8f93\u51fa: Hello, I"m a Python developer.  <\/p>\n
    <\/code><\/pre>\n<\/p>\n<\/li>\n
  2. \n
    \u66ff\u6362\u591a\u79cd\u5f15\u53f7<\/strong>
    \u5982\u679c\u9700\u8981\u66ff\u6362\u591a\u79cd\u5f15\u53f7\uff0c\u4f8b\u5982\u540c\u65f6\u66ff\u6362\u5355\u5f15\u53f7\u548c\u53cc\u5f15\u53f7\uff0c\u53ef\u4ee5\u8fdb\u884c\u591a\u6b21\u8c03\u7528replace()<\/code>\u65b9\u6cd5\u3002  <\/p>\n<\/p>\n
    text = "Hello, I'm a 'Python' developer."  <\/p>\n
    new_text = text.replace("'", '"').replace('"', "'")  <\/p>\n
    print(new_text)  # \u8f93\u51fa: Hello, I"m a "Python" developer.  <\/p>\n
    <\/code><\/pre>\n<\/p>\n<\/li>\n<\/ol>\n
    \u4e09\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u66ff\u6362\u5f15\u53f7  <\/p>\n<\/p>\n
    \u5728Python\u4e2d\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5757re<\/code>\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5b57\u7b26\u4e32\u5904\u7406\u529f\u80fd\uff0c\u53ef\u4ee5\u7528\u6765\u66ff\u6362\u590d\u6742\u6a21\u5f0f\u7684\u5b57\u7b26\u4e32\u3002  <\/p>\n<\/p>\n
      \n
    1. \n
      re.sub()\u65b9\u6cd5<\/strong>
      re.sub()<\/code>\u662f\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5757\u4e2d\u7684\u4e00\u4e2a\u65b9\u6cd5\uff0c\u7528\u4e8e\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u5339\u914d\u9879\u3002\u5176\u57fa\u672c\u8bed\u6cd5\u4e3are.sub(pattern, repl, string, count=0, flags=0)<\/code>\uff0c\u5176\u4e2dpattern<\/code>\u662f\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\uff0crepl<\/code>\u662f\u66ff\u6362\u540e\u7684\u5b57\u7b26\u4e32\uff0cstring<\/code>\u662f\u539f\u59cb\u5b57\u7b26\u4e32\uff0ccount<\/code>\u662f\u66ff\u6362\u6b21\u6570\uff0cflags<\/code>\u662f\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u6807\u5fd7\u4f4d\u3002  <\/p>\n<\/p>\n
      \u4f8b\u5982\uff0c\u8981\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u5355\u5f15\u53f7\u548c\u53cc\u5f15\u53f7\u66ff\u6362\u4e3a\u661f\u53f7\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a  <\/p>\n<\/p>\n
      import re  <\/p>\n
      text = "Hello, I'm a 'Python' developer."  <\/p>\n
      new_text = re.sub(r"[\\"']", '*', text)  <\/p>\n
      print(new_text)  # \u8f93\u51fa: Hello, I*m a *Python* developer.  <\/p>\n
      <\/code><\/pre>\n<\/p>\n<\/li>\n
    2. \n
      \u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u7075\u6d3b\u6027<\/strong>
      \u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u53ef\u4ee5\u5b9a\u4e49\u590d\u6742\u7684\u5339\u914d\u6a21\u5f0f\uff0c\u8fd9\u5728\u5904\u7406\u590d\u6742\u5b57\u7b26\u4e32\u66ff\u6362\u65f6\u975e\u5e38\u6709\u7528\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u6839\u636e\u4e0a\u4e0b\u6587\u6761\u4ef6\u66ff\u6362\u5f15\u53f7\u3002  <\/p>\n<\/p>\n
      import re  <\/p>\n
      text = "He sAI<\/a>d, 'Python is awesome.' Then she replied, 'Indeed!'."  <\/p>\n
      \u66ff\u6362\u5f15\u53f7\u5185\u7684\u5185\u5bb9\u4e3a\u53cc\u5f15\u53f7  <\/strong><\/h2>\n
      new_text = re.sub(r"'(.*?)'", r'"\\1"', text)  <\/p>\n
      print(new_text)  # \u8f93\u51fa: He said, "Python is awesome." Then she replied, "Indeed!".  <\/p>\n
      <\/code><\/pre>\n<\/p>\n<\/li>\n<\/ol>\n
      \u56db\u3001\u4f7f\u7528TRANSLATE()\u65b9\u6cd5\u66ff\u6362\u5f15\u53f7  <\/p>\n<\/p>\n
      translate()<\/code>\u65b9\u6cd5\u662f\u53e6\u4e00\u79cd\u66ff\u6362\u5b57\u7b26\u7684\u65b9\u5f0f\uff0c\u901a\u5e38\u7528\u4e8e\u66ff\u6362\u5355\u4e2a\u5b57\u7b26\uff0c\u800c\u4e0d\u662f\u5b57\u7b26\u4e32\u3002  <\/p>\n<\/p>\n
        \n
      1. \n
        \u57fa\u672c\u7528\u6cd5<\/strong>
        translate()<\/code>\u65b9\u6cd5\u9700\u8981\u4e0estr.maketrans()<\/code>\u65b9\u6cd5\u7ed3\u5408\u4f7f\u7528\u3002str.maketrans()<\/code>\u65b9\u6cd5\u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u5b57\u7b26\u6620\u5c04\u8868\uff0c\u7136\u540etranslate()<\/code>\u65b9\u6cd5\u6839\u636e\u8fd9\u4e2a\u6620\u5c04\u8868\u66ff\u6362\u5b57\u7b26\u3002  <\/p>\n<\/p>\n
        \u4f8b\u5982\uff0c\u8981\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u5355\u5f15\u53f7\u66ff\u6362\u4e3a\u53cc\u5f15\u53f7\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a  <\/p>\n<\/p>\n
        text = "Hello, I'm a Python developer."  <\/p>\n
        translation_table = str.maketrans("'", '"')  <\/p>\n
        new_text = text.translate(translation_table)  <\/p>\n
        print(new_text)  # \u8f93\u51fa: Hello, I"m a Python developer.  <\/p>\n
        <\/code><\/pre>\n<\/p>\n<\/li>\n
      2. \n
        \u591a\u4e2a\u5b57\u7b26\u66ff\u6362<\/strong>
        translate()<\/code>\u65b9\u6cd5\u4e5f\u53ef\u4ee5\u7528\u4e8e\u66ff\u6362\u591a\u4e2a\u5b57\u7b26\uff0c\u53ea\u9700\u5728\u6620\u5c04\u8868\u4e2d\u6dfb\u52a0\u66f4\u591a\u7684\u6620\u5c04\u5173\u7cfb\u3002  <\/p>\n<\/p>\n
        text = "Hello, 'Python' developer."  <\/p>\n
        translation_table = str.maketrans({"'": '"', '"': "'"})  <\/p>\n
        new_text = text.translate(translation_table)  <\/p>\n
        print(new_text)  # \u8f93\u51fa: Hello, "Python" developer.  <\/p>\n
        <\/code><\/pre>\n<\/p>\n<\/li>\n<\/ol>\n
        \u4e94\u3001\u5e94\u7528\u573a\u666f\u4e0e\u6027\u80fd\u8003\u8651  <\/p>\n<\/p>\n
          \n
        1. \n
          \u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5<\/strong>
          \u5728\u9009\u62e9\u66ff\u6362\u5f15\u53f7\u7684\u65b9\u6cd5\u65f6\uff0c\u5e94\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u3002\u5982\u679c\u53ea\u662f\u7b80\u5355\u5730\u66ff\u6362\u67d0\u79cd\u5355\u4e00\u5b57\u7b26\uff0c\u53ef\u4ee5\u4f7f\u7528replace()<\/code>\u6216translate()<\/code>\u65b9\u6cd5\u3002\u5982\u679c\u9700\u8981\u6839\u636e\u590d\u6742\u7684\u5339\u914d\u6761\u4ef6\u8fdb\u884c\u66ff\u6362\uff0c\u6b63\u5219\u8868\u8fbe\u5f0fre.sub()<\/code>\u4f1a\u662f\u4e00\u4e2a\u66f4\u597d\u7684\u9009\u62e9\u3002  <\/p>\n<\/p>\n<\/li>\n
        2. \n
          \u6027\u80fd\u8003\u8651<\/strong>
          \u5728\u5904\u7406\u8f83\u5927\u7684\u6587\u672c\u65f6\uff0c\u6027\u80fd\u53ef\u80fd\u662f\u4e00\u4e2a\u9700\u8981\u5173\u6ce8\u7684\u95ee\u9898\u3002\u4e00\u822c\u6765\u8bf4\uff0creplace()<\/code>\u548ctranslate()<\/code>\u65b9\u6cd5\u7684\u6027\u80fd\u4f18\u4e8ere.sub()<\/code>\uff0c\u56e0\u4e3a\u5b83\u4eec\u4e0d\u6d89\u53ca\u590d\u6742\u7684\u6a21\u5f0f\u5339\u914d\u3002\u5982\u679c\u6027\u80fd\u662f\u5173\u952e\u56e0\u7d20\uff0c\u5e76\u4e14\u66ff\u6362\u903b\u8f91\u7b80\u5355\uff0c\u4f18\u5148\u9009\u62e9replace()<\/code>\u6216translate()<\/code>\u3002  <\/p>\n<\/p>\n<\/li>\n
        3. \n
          \u5904\u7406\u7279\u6b8a\u60c5\u51b5<\/strong>
          \u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u6587\u672c\u4e2d\u53ef\u80fd\u5305\u542b\u8f6c\u4e49\u5b57\u7b26\u6216\u5176\u4ed6\u7279\u6b8a\u5b57\u7b26\uff0c\u9700\u8981\u7279\u522b\u5904\u7406\u3002\u4f8b\u5982\uff0cJSON\u683c\u5f0f\u7684\u6570\u636e\u4e2d\uff0c\u5b57\u7b26\u4e32\u5305\u542b\u7684\u5f15\u53f7\u9700\u8981\u88ab\u6b63\u786e\u8f6c\u4e49\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528json<\/code>\u6a21\u5757\u7684loads()<\/code>\u548cdumps()<\/code>\u65b9\u6cd5\u6765\u89e3\u6790\u548c\u751f\u6210JSON\u5b57\u7b26\u4e32\u53ef\u80fd\u66f4\u4e3a\u5408\u9002\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
          \u603b\u7ed3\u6765\u8bf4\uff0cPython\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u5f15\u53f7\uff0c\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u4ece\u800c\u8fbe\u5230\u9ad8\u6548\u548c\u6b63\u786e\u7684\u66ff\u6362\u6548\u679c\u3002<\/p>\n<\/p>\n
          \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
           \u5728Python\u4e2d\u5982\u4f55\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u5355\u5f15\u53f7\u548c\u53cc\u5f15\u53f7\uff1f<\/strong>
          \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528str.replace()<\/code>\u65b9\u6cd5\u6765\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u5355\u5f15\u53f7\u548c\u53cc\u5f15\u53f7\u3002\u6bd4\u5982\uff0c\u5982\u679c\u60f3\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u5355\u5f15\u53f7\u66ff\u6362\u4e3a\u53cc\u5f15\u53f7\uff0c\u53ef\u4ee5\u8fd9\u6837\u5199\uff1anew_string = original_string.replace("'", '"')<\/code>\u3002\u5982\u679c\u60f3\u66ff\u6362\u53cc\u5f15\u53f7\u4e3a\u5355\u5f15\u53f7\uff0c\u53ea\u9700\u53cd\u8f6c\u5f15\u53f7\u5373\u53ef\uff1anew_string = original_string.replace('"', "'")<\/code>\u3002<\/p>\n
          \u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u66ff\u6362\u5f15\u53f7\u7684\u6700\u4f73\u5b9e\u8df5\u662f\u4ec0\u4e48\uff1f<\/strong>
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          \u5728\u6570\u636e\u5904\u7406\u8fc7\u7a0b\u4e2d\u66ff\u6362\u5f15\u53f7\u53ef\u80fd\u5f15\u53d1\u54ea\u4e9b\u95ee\u9898\uff1f<\/strong>
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