{"id":930493,"date":"2024-12-26T17:17:46","date_gmt":"2024-12-26T09:17:46","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/930493.html"},"modified":"2024-12-26T17:17:47","modified_gmt":"2024-12-26T09:17:47","slug":"python-%e5%a6%82%e4%bd%95%e8%bf%bd%e5%8a%a0%e6%96%87%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/930493.html","title":{"rendered":"python \u5982\u4f55\u8ffd\u52a0\u6587\u4ef6"},"content":{"rendered":"

\"python<\/p>\n

\u5728Python\u4e2d\uff0c\u8ffd\u52a0\u6587\u4ef6\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5185\u7f6e\u7684open()<\/code>\u51fd\u6570\u4ee5\u8ffd\u52a0\u6a21\u5f0f\uff08'a'\u6a21\u5f0f\uff09\u6253\u5f00\u6587\u4ef6\u3001\u4f7f\u7528write()<\/code>\u65b9\u6cd5\u6dfb\u52a0\u5185\u5bb9\u3001\u786e\u4fdd\u5173\u95ed\u6587\u4ef6\u3002<\/strong> \u8ffd\u52a0\u6a21\u5f0f\u4f1a\u5728\u6587\u4ef6\u672b\u5c3e\u6dfb\u52a0\u6570\u636e\u800c\u4e0d\u8986\u76d6\u73b0\u6709\u5185\u5bb9\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5b9e\u73b0\u6587\u4ef6\u8ffd\u52a0\u5e76\u63a2\u8ba8\u76f8\u5173\u7684\u6ce8\u610f\u4e8b\u9879\u548c\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u6587\u4ef6\u8ffd\u52a0\u7684\u57fa\u672c\u65b9\u6cd5<\/p>\n<\/p>\n

\u5728Python\u4e2d\uff0c\u8ffd\u52a0\u6587\u4ef6\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528open()<\/code>\u51fd\u6570\u4ee5\u8ffd\u52a0\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6\u3002\u8ffd\u52a0\u6a21\u5f0f\u4f7f\u7528\u5b57\u7b26\u201ca\u201d\u8868\u793a\u3002\u4ee5\u4e0b\u662f\u8ffd\u52a0\u6587\u4ef6\u7684\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n

with open('example.txt', 'a') as file:<\/p>\n
    file.write('This is an additional line.\\n')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0copen()<\/code>\u51fd\u6570\u4ee5\u8ffd\u52a0\u6a21\u5f0f\u6253\u5f00\u540d\u4e3aexample.txt<\/code>\u7684\u6587\u4ef6\u3002\u901a\u8fc7\u4f7f\u7528write()<\/code>\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5c06\u65b0\u7684\u5185\u5bb9\u6dfb\u52a0\u5230\u6587\u4ef6\u7684\u672b\u5c3e\u3002\u6700\u540e\uff0c\u4f7f\u7528with<\/code>\u8bed\u53e5\u786e\u4fdd\u6587\u4ef6\u5728\u64cd\u4f5c\u5b8c\u6210\u540e\u81ea\u52a8\u5173\u95ed\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u8ffd\u52a0\u6a21\u5f0f\u7684\u4f18\u70b9<\/p>\n<\/p>\n
\u8ffd\u52a0\u6a21\u5f0f\u6709\u51e0\u4e2a\u663e\u8457\u7684\u4f18\u70b9\uff1a<\/p>\n<\/p>\n
    \n
  1. \n
    \u4e0d\u8986\u76d6\u73b0\u6709\u5185\u5bb9<\/strong>\uff1a\u8ffd\u52a0\u6a21\u5f0f\u4fdd\u8bc1\u5728\u5411\u6587\u4ef6\u4e2d\u6dfb\u52a0\u65b0\u5185\u5bb9\u65f6\u4e0d\u4f1a\u8986\u76d6\u5df2\u6709\u5185\u5bb9\u3002\u8fd9\u5bf9\u4e8e\u9700\u8981\u6301\u7eed\u8bb0\u5f55\u65e5\u5fd7\u6216\u9010\u6b65\u6dfb\u52a0\u6570\u636e\u7684\u5e94\u7528\u7a0b\u5e8f\u7279\u522b\u6709\u7528\u3002<\/p>\n<\/p>\n<\/li>\n
  2. \n
    \u7b80\u5355\u6613\u7528<\/strong>\uff1a\u901a\u8fc7\u7b80\u5355\u7684\u4ee3\u7801\u5373\u53ef\u5b9e\u73b0\u6587\u4ef6\u8ffd\u52a0\uff0c\u8fd9\u4f7f\u5f97Python\u5728\u5904\u7406\u6587\u4ef6\u64cd\u4f5c\u65f6\u975e\u5e38\u9ad8\u6548\u3002<\/p>\n<\/p>\n<\/li>\n
  3. \n
    \u9002\u7528\u4e8e\u591a\u79cd\u6587\u4ef6\u7c7b\u578b<\/strong>\uff1a\u65e0\u8bba\u662f\u6587\u672c\u6587\u4ef6\u8fd8\u662f\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u8ffd\u52a0\u6a21\u5f0f\u90fd\u9002\u7528\uff0c\u53ea\u9700\u6839\u636e\u6587\u4ef6\u7c7b\u578b\u9009\u62e9\u5408\u9002\u7684\u8bfb\u5199\u6a21\u5f0f\u5373\u53ef\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
    \u4e09\u3001\u5982\u4f55\u5904\u7406\u6587\u4ef6\u4e0d\u5b58\u5728\u7684\u60c5\u51b5<\/p>\n<\/p>\n
    \u4f7f\u7528\u8ffd\u52a0\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6\u65f6\uff0c\u5982\u679c\u6587\u4ef6\u4e0d\u5b58\u5728\uff0cPython\u4f1a\u81ea\u52a8\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6587\u4ef6\u3002\u8fd9\u4e00\u7279\u6027\u4f7f\u5f97\u5728\u5904\u7406\u6587\u4ef6\u8ffd\u52a0\u64cd\u4f5c\u65f6\u65e0\u9700\u62c5\u5fc3\u6587\u4ef6\u662f\u5426\u5df2\u7ecf\u5b58\u5728\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
    with open('newfile.txt', 'a') as file:<\/p>\n
        file.write('This file is newly created and content is added.\\n')<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5982\u679cnewfile.txt<\/code>\u4e0d\u5b58\u5728\uff0cPython\u4f1a\u521b\u5efa\u5b83\u5e76\u5c06\u6307\u5b9a\u5185\u5bb9\u5199\u5165\u5176\u4e2d\u3002<\/p>\n<\/p>\n
    \u56db\u3001\u8ffd\u52a0\u6587\u4ef6\u7684\u6ce8\u610f\u4e8b\u9879<\/p>\n<\/p>\n
      \n
    1. \u7f16\u7801\u95ee\u9898<\/strong>\uff1a\u5728\u5904\u7406\u6587\u672c\u6587\u4ef6\u65f6\uff0c\u786e\u4fdd\u4f7f\u7528\u6b63\u786e\u7684\u7f16\u7801\u3002\u4f8b\u5982\uff0c\u4f7f\u7528UTF-8\u7f16\u7801\u53ef\u4ee5\u907f\u514d\u56e0\u5b57\u7b26\u96c6\u4e0d\u5339\u914d\u800c\u5bfc\u81f4\u7684\u9519\u8bef\u3002<\/li>\n<\/ol>\n
      with open('example.txt', 'a', encoding='utf-8') as file:<\/p>\n
          file.write('\u8fd9\u662f\u4e00\u4e2a\u4e2d\u6587\u53e5\u5b50\u3002\\n')<\/p>\n
      <\/code><\/pre>\n<\/p>\n
        \n
      1. \n
        \u7ebf\u7a0b\u5b89\u5168<\/strong>\uff1a\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u8fdb\u884c\u6587\u4ef6\u8ffd\u52a0\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u9501\u673a\u5236\u6765\u786e\u4fdd\u7ebf\u7a0b\u5b89\u5168\uff0c\u4ee5\u907f\u514d\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u5199\u5165\u6587\u4ef6\u5bfc\u81f4\u7684\u6570\u636e\u635f\u574f\u3002<\/p>\n<\/p>\n<\/li>\n
      2. \n
        \u6587\u4ef6\u6743\u9650<\/strong>\uff1a\u786e\u4fdd\u5728\u8ffd\u52a0\u6587\u4ef6\u65f6\u5177\u6709\u9002\u5f53\u7684\u6743\u9650\u3002\u5982\u679c\u6587\u4ef6\u662f\u53ea\u8bfb\u7684\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6743\u9650\u9519\u8bef\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
        \u4e94\u3001\u5728\u5927\u89c4\u6a21\u6570\u636e\u5904\u7406\u4e2d\u7684\u5e94\u7528<\/p>\n<\/p>\n
        \u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u65f6\uff0c\u6587\u4ef6\u8ffd\u52a0\u64cd\u4f5c\u53ef\u4ee5\u7528\u4e8e\u8bb0\u5f55\u65e5\u5fd7\u3001\u4fdd\u5b58\u5904\u7406\u8fdb\u5ea6\u4ee5\u53ca\u50a8\u5b58\u4e2d\u95f4\u7ed3\u679c\u7b49\u3002\u4f8b\u5982\uff0c\u5728\u6570\u636e\u5206\u6790\u8fc7\u7a0b\u4e2d\uff0c\u53ef\u4ee5\u5c06\u6bcf\u6b21\u7684\u5206\u6790\u7ed3\u679c\u8ffd\u52a0\u5230\u4e00\u4e2a\u65e5\u5fd7\u6587\u4ef6\u4e2d\uff0c\u4ee5\u4fbf\u540e\u7eed\u5ba1\u67e5\u548c\u8c03\u8bd5\u3002<\/p>\n<\/p>\n
        \u516d\u3001\u8ffd\u52a0\u4e8c\u8fdb\u5236\u6587\u4ef6<\/p>\n<\/p>\n
        \u9664\u4e86\u6587\u672c\u6587\u4ef6\uff0cPython\u4e5f\u652f\u6301\u5bf9\u4e8c\u8fdb\u5236\u6587\u4ef6\u7684\u8ffd\u52a0\u64cd\u4f5c\u3002\u53ea\u9700\u4f7f\u7528\u201cab\u201d\u6a21\u5f0f\uff08\u8ffd\u52a0\u4e8c\u8fdb\u5236\uff09\u5373\u53ef\uff1a<\/p>\n<\/p>\n
        with open('image.jpg', 'ab') as file:<\/p>\n
            file.write(b'\\x00\\x01\\x02')<\/p>\n
        <\/code><\/pre>\n<\/p>\n
        \u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u9700\u8981\u8ffd\u52a0\u539f\u59cb\u5b57\u8282\u6570\u636e\u7684\u573a\u666f\uff0c\u4f8b\u5982\u5728\u5904\u7406\u56fe\u50cf\u6216\u89c6\u9891\u6587\u4ef6\u65f6\u3002<\/p>\n<\/p>\n
        \u4e03\u3001\u603b\u7ed3<\/p>\n<\/p>\n
        Python\u63d0\u4f9b\u4e86\u4fbf\u6377\u7684\u6587\u4ef6\u8ffd\u52a0\u529f\u80fd\uff0c\u4f7f\u5f00\u53d1\u8005\u80fd\u591f\u8f7b\u677e\u5730\u5411\u6587\u4ef6\u672b\u5c3e\u6dfb\u52a0\u6570\u636e\u800c\u4e0d\u7834\u574f\u73b0\u6709\u5185\u5bb9\u3002\u901a\u8fc7\u6b63\u786e\u4f7f\u7528\u7f16\u7801\u3001\u591a\u7ebf\u7a0b\u5b89\u5168\u548c\u6587\u4ef6\u6743\u9650\u7b49\u6280\u5de7\uff0c\u53ef\u4ee5\u786e\u4fdd\u6587\u4ef6\u64cd\u4f5c\u7684\u53ef\u9760\u6027\u548c\u5b89\u5168\u6027\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6587\u4ef6\u8ffd\u52a0\u529f\u80fd\u5e7f\u6cdb\u5e94\u7528\u4e8e\u65e5\u5fd7\u8bb0\u5f55\u3001\u5927\u6570\u636e\u5904\u7406\u548c\u52a8\u6001\u6570\u636e\u5b58\u50a8\u7b49\u9886\u57df\u3002<\/p>\n<\/p>\n
        \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
         \u5982\u4f55\u5728Python\u4e2d\u4f7f\u7528\u8ffd\u52a0\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6\uff1f<\/strong>
        \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528open()<\/code>\u51fd\u6570\u7684'a'<\/code>\u6a21\u5f0f\u6765\u4ee5\u8ffd\u52a0\u65b9\u5f0f\u6253\u5f00\u6587\u4ef6\u3002\u8fd9\u79cd\u6a21\u5f0f\u5141\u8bb8\u60a8\u5728\u6587\u4ef6\u7684\u672b\u5c3e\u6dfb\u52a0\u5185\u5bb9\uff0c\u800c\u4e0d\u4f1a\u8986\u76d6\u73b0\u6709\u5185\u5bb9\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n
        with open('example.txt', 'a') as file:\n    file.write('\u8fd9\u662f\u4e00\u884c\u65b0\u5185\u5bb9\u3002\\n')\n<\/code><\/pre>\n
        \u8fd9\u79cd\u65b9\u6cd5\u786e\u4fdd\u5728\u5199\u5165\u65b0\u6570\u636e\u65f6\uff0c\u539f\u6709\u6570\u636e\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n
        \u5728\u8ffd\u52a0\u6587\u4ef6\u65f6\u5982\u4f55\u5904\u7406\u7f16\u7801\u95ee\u9898\uff1f<\/strong>
        \u5728\u5904\u7406\u6587\u4ef6\u65f6\uff0c\u7279\u522b\u662f\u5305\u542b\u975eASCII\u5b57\u7b26\u7684\u6587\u4ef6\uff0c\u6307\u5b9a\u7f16\u7801\u975e\u5e38\u91cd\u8981\u3002\u53ef\u4ee5\u5728open()<\/code>\u51fd\u6570\u4e2d\u4f7f\u7528encoding<\/code>\u53c2\u6570\u6765\u786e\u4fdd\u6b63\u786e\u7684\u5b57\u7b26\u7f16\u7801\u3002\u793a\u4f8b\uff1a  <\/p>\n
        with open('example.txt', 'a', encoding='utf-8') as file:\n    file.write('\u6dfb\u52a0\u4e00\u4e9b\u4e2d\u6587\u5185\u5bb9\u3002\\n')\n<\/code><\/pre>\n
        \u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u7f16\u7801\u9519\u8bef\uff0c\u786e\u4fdd\u6240\u6709\u5185\u5bb9\u90fd\u80fd\u6b63\u786e\u4fdd\u5b58\u3002<\/p>\n
        \u5982\u4f55\u68c0\u67e5\u6587\u4ef6\u662f\u5426\u4ee5\u8ffd\u52a0\u6a21\u5f0f\u6253\u5f00\uff1f<\/strong>
        \u8981\u9a8c\u8bc1\u6587\u4ef6\u662f\u5426\u4ee5\u8ffd\u52a0\u6a21\u5f0f\u6253\u5f00\uff0c\u53ef\u4ee5\u901a\u8fc7\u6587\u4ef6\u5bf9\u8c61\u7684mode<\/code>\u5c5e\u6027\u8fdb\u884c\u68c0\u67e5\u3002\u5f53\u6587\u4ef6\u4ee5\u8ffd\u52a0\u6a21\u5f0f\u6253\u5f00\u65f6\uff0cmode<\/code>\u5c5e\u6027\u7684\u503c\u5e94\u4e3a'a'<\/code>\u3002\u793a\u4f8b\uff1a  <\/p>\n
        with open('example.txt', 'a') as file:\n    print(file.mode)  # \u8f93\u51fa\uff1a'a'\n<\/code><\/pre>\n
        \u8fd9\u79cd\u65b9\u5f0f\u5e2e\u52a9\u5f00\u53d1\u8005\u786e\u8ba4\u6587\u4ef6\u7684\u6253\u5f00\u6a21\u5f0f\uff0c\u907f\u514d\u8bef\u64cd\u4f5c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u8ffd\u52a0\u6587\u4ef6\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5185\u7f6e\u7684open()\u51fd\u6570\u4ee5\u8ffd\u52a0\u6a21\u5f0f\uff08'a'\u6a21\u5f0f\uff09\u6253\u5f00\u6587\u4ef6\u3001 […]","protected":false},"author":3,"featured_media":930496,"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\/930493"}],"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=930493"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/930493\/revisions"}],"predecessor-version":[{"id":930499,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/930493\/revisions\/930499"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/930496"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=930493"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=930493"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=930493"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}