{"id":1061530,"date":"2024-12-31T15:43:36","date_gmt":"2024-12-31T07:43:36","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1061530.html"},"modified":"2024-12-31T15:43:39","modified_gmt":"2024-12-31T07:43:39","slug":"python%e5%a6%82%e4%bd%95%e5%be%80%e6%96%87%e4%bb%b6%e4%b8%ad%e6%b7%bb%e5%8a%a0%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1061530.html","title":{"rendered":"python\u5982\u4f55\u5f80\u6587\u4ef6\u4e2d\u6dfb\u52a0\u6570\u636e"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2024\/12\/179efc62-0972-4e3b-9410-ce80dead0668.webp?x-oss-process=image\/auto-orient,1\/format,webp\" alt=\"python\u5982\u4f55\u5f80\u6587\u4ef6\u4e2d\u6dfb\u52a0\u6570\u636e\" \/><\/p>\n<p><p> <strong>\u4e00\u3001Python\u5f80\u6587\u4ef6\u4e2d\u6dfb\u52a0\u6570\u636e\u7684\u65b9\u6cd5\u6709<\/strong>\uff1a\u4f7f\u7528\u8ffd\u52a0\u6a21\u5f0f\u3001\u4f7f\u7528\u6587\u4ef6\u5bf9\u8c61\u7684write()\u65b9\u6cd5\u3001\u4f7f\u7528with\u8bed\u53e5\u3001\u4f7f\u7528writelines()\u65b9\u6cd5\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u8bf4\u660e\u5982\u4f55\u5728\u4e0d\u540c\u60c5\u51b5\u4e0b\u4f7f\u7528\u5b83\u4eec\u3002<\/p>\n<\/p>\n<p><h3><strong>\u4f7f\u7528\u8ffd\u52a0\u6a21\u5f0f<\/strong><\/h3>\n<\/p>\n<p><p>Python\u4e2d\u7684\u6587\u4ef6\u64cd\u4f5c\u6a21\u5f0f\u5305\u62ec\u8bfb\u6a21\u5f0f\uff08&#39;r&#39;\uff09\u3001\u5199\u6a21\u5f0f\uff08&#39;w&#39;\uff09\u3001\u8ffd\u52a0\u6a21\u5f0f\uff08&#39;a&#39;\uff09\u7b49\u3002\u8981\u5411\u6587\u4ef6\u4e2d\u6dfb\u52a0\u6570\u636e\uff0c\u6211\u4eec\u901a\u5e38\u4f7f\u7528\u8ffd\u52a0\u6a21\u5f0f\uff08&#39;a&#39;\uff09\u3002\u5728\u8ffd\u52a0\u6a21\u5f0f\u4e0b\uff0c\u6570\u636e\u4f1a\u88ab\u6dfb\u52a0\u5230\u6587\u4ef6\u7684\u672b\u5c3e\uff0c\u800c\u4e0d\u4f1a\u8986\u76d6\u539f\u6709\u5185\u5bb9\u3002<\/p>\n<\/p>\n<p><p>\u8981\u4f7f\u7528\u8ffd\u52a0\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528open()\u51fd\u6570\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">with open(&#39;example.txt&#39;, &#39;a&#39;) as file:<\/p>\n<p>    file.write(&#39;New data to be added.\\n&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528with\u8bed\u53e5\u6253\u5f00\u6587\u4ef6\u5e76\u6307\u5b9a\u8ffd\u52a0\u6a21\u5f0f\uff08&#39;a&#39;\uff09\u3002\u7136\u540e\uff0c\u4f7f\u7528write()\u65b9\u6cd5\u5c06\u65b0\u6570\u636e\u5199\u5165\u6587\u4ef6\u3002\u4f7f\u7528with\u8bed\u53e5\u53ef\u4ee5\u786e\u4fdd\u5728\u5b8c\u6210\u6587\u4ef6\u64cd\u4f5c\u540e\u81ea\u52a8\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<\/p>\n<p><h3><strong>\u4f7f\u7528\u6587\u4ef6\u5bf9\u8c61\u7684write()\u65b9\u6cd5<\/strong><\/h3>\n<\/p>\n<p><p>write()\u65b9\u6cd5\u662f\u5411\u6587\u4ef6\u4e2d\u5199\u5165\u6570\u636e\u7684\u57fa\u672c\u65b9\u6cd5\u3002\u5b83\u5c06\u5b57\u7b26\u4e32\u6570\u636e\u5199\u5165\u6587\u4ef6\uff0c\u5e76\u8fd4\u56de\u5199\u5165\u7684\u5b57\u7b26\u6570\u3002\u6211\u4eec\u53ef\u4ee5\u591a\u6b21\u8c03\u7528write()\u65b9\u6cd5\uff0c\u5c06\u4e0d\u540c\u7684\u6570\u636e\u6dfb\u52a0\u5230\u6587\u4ef6\u4e2d\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">with open(&#39;example.txt&#39;, &#39;a&#39;) as file:<\/p>\n<p>    file.write(&#39;First line of new data.\\n&#39;)<\/p>\n<p>    file.write(&#39;Second line of new data.\\n&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528write()\u65b9\u6cd5\u5c06\u4e24\u884c\u65b0\u6570\u636e\u6dfb\u52a0\u5230\u6587\u4ef6\u4e2d\u3002\u6bcf\u6b21\u8c03\u7528write()\u65b9\u6cd5\u65f6\uff0c\u6570\u636e\u90fd\u4f1a\u88ab\u8ffd\u52a0\u5230\u6587\u4ef6\u7684\u672b\u5c3e\u3002<\/p>\n<\/p>\n<p><h3><strong>\u4f7f\u7528with\u8bed\u53e5<\/strong><\/h3>\n<\/p>\n<p><p>with\u8bed\u53e5\u662f\u4e00\u79cd\u7ba1\u7406\u4e0a\u4e0b\u6587\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u786e\u4fdd\u6587\u4ef6\u5728\u5b8c\u6210\u64cd\u4f5c\u540e\u81ea\u52a8\u5173\u95ed\u3002\u4f7f\u7528with\u8bed\u53e5\u53ef\u4ee5\u7b80\u5316\u4ee3\u7801\uff0c\u5e76\u51cf\u5c11\u624b\u52a8\u5173\u95ed\u6587\u4ef6\u7684\u98ce\u9669\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">with open(&#39;example.txt&#39;, &#39;a&#39;) as file:<\/p>\n<p>    file.write(&#39;New data to be added.\\n&#39;)<\/p>\n<p>    file.write(&#39;Another line of new data.\\n&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528with\u8bed\u53e5\u6253\u5f00\u6587\u4ef6\u5e76\u8ffd\u52a0\u6570\u636e\u3002\u4f7f\u7528with\u8bed\u53e5\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u548c\u5b89\u5168\u3002<\/p>\n<\/p>\n<p><h3><strong>\u4f7f\u7528writelines()\u65b9\u6cd5<\/strong><\/h3>\n<\/p>\n<p><p>writelines()\u65b9\u6cd5\u53ef\u4ee5\u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u5217\u8868\u5199\u5165\u6587\u4ef6\u3002\u5b83\u4e0d\u4f1a\u81ea\u52a8\u6dfb\u52a0\u6362\u884c\u7b26\uff0c\u56e0\u6b64\u6211\u4eec\u9700\u8981\u5728\u6bcf\u4e2a\u5b57\u7b26\u4e32\u672b\u5c3e\u624b\u52a8\u6dfb\u52a0\u6362\u884c\u7b26\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">lines = [&#39;First line of new data.\\n&#39;, &#39;Second line of new data.\\n&#39;]<\/p>\n<p>with open(&#39;example.txt&#39;, &#39;a&#39;) as file:<\/p>\n<p>    file.writelines(lines)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u4e24\u884c\u65b0\u6570\u636e\u7684\u5b57\u7b26\u4e32\u5217\u8868\uff0c\u7136\u540e\u4f7f\u7528writelines()\u65b9\u6cd5\u5c06\u5217\u8868\u5199\u5165\u6587\u4ef6\u3002\u6bcf\u4e2a\u5b57\u7b26\u4e32\u672b\u5c3e\u90fd\u5305\u542b\u6362\u884c\u7b26\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u6309\u884c\u6dfb\u52a0\u3002<\/p>\n<\/p>\n<p><h3><strong>\u5904\u7406\u6587\u4ef6\u8def\u5f84\u548c\u7f16\u7801<\/strong><\/h3>\n<\/p>\n<p><p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u5904\u7406\u4e0d\u540c\u7684\u6587\u4ef6\u8def\u5f84\u548c\u7f16\u7801\u3002\u4e3a\u4e86\u786e\u4fdd\u6587\u4ef6\u64cd\u4f5c\u7684\u6b63\u786e\u6027\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528os\u6a21\u5757\u5904\u7406\u6587\u4ef6\u8def\u5f84\uff0c\u5e76\u4f7f\u7528encoding\u53c2\u6570\u6307\u5b9a\u6587\u4ef6\u7f16\u7801\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import os<\/p>\n<p>file_path = os.path.join(&#39;path&#39;, &#39;to&#39;, &#39;example.txt&#39;)<\/p>\n<p>new_data = &#39;New data to be added.\\n&#39;<\/p>\n<p>with open(file_path, &#39;a&#39;, encoding=&#39;utf-8&#39;) as file:<\/p>\n<p>    file.write(new_data)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528os.path.join()\u51fd\u6570\u6784\u5efa\u6587\u4ef6\u8def\u5f84\uff0c\u5e76\u4f7f\u7528encoding\u53c2\u6570\u6307\u5b9a\u6587\u4ef6\u7f16\u7801\u4e3aUTF-8\u3002\u8fd9\u53ef\u4ee5\u786e\u4fdd\u5728\u5904\u7406\u4e0d\u540c\u5e73\u53f0\u548c\u7f16\u7801\u7684\u6587\u4ef6\u65f6\uff0c\u6587\u4ef6\u64cd\u4f5c\u7684\u6b63\u786e\u6027\u3002<\/p>\n<\/p>\n<p><h3><strong>\u5904\u7406\u5927\u6587\u4ef6<\/strong><\/h3>\n<\/p>\n<p><p>\u5728\u5904\u7406\u5927\u6587\u4ef6\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u8003\u8651\u6027\u80fd\u548c\u5185\u5b58\u4f7f\u7528\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u751f\u6210\u5668\u6216\u9010\u884c\u8bfb\u53d6\u548c\u5199\u5165\u6587\u4ef6\uff0c\u4ee5\u51cf\u5c11\u5185\u5b58\u5360\u7528\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def generate_data():<\/p>\n<p>    for i in range(1000000):<\/p>\n<p>        yield f&#39;Line {i}\\n&#39;<\/p>\n<p>with open(&#39;example.txt&#39;, &#39;a&#39;) as file:<\/p>\n<p>    for line in generate_data():<\/p>\n<p>        file.write(line)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u751f\u6210\u5668\u51fd\u6570generate_data()\uff0c\u7528\u4e8e\u751f\u6210\u4e00\u767e\u4e07\u884c\u6570\u636e\u3002\u7136\u540e\uff0c\u4f7f\u7528for\u5faa\u73af\u9010\u884c\u5c06\u6570\u636e\u5199\u5165\u6587\u4ef6\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u51cf\u5c11\u5185\u5b58\u5360\u7528\uff0c\u5e76\u63d0\u9ad8\u5904\u7406\u5927\u6587\u4ef6\u7684\u6027\u80fd\u3002<\/p>\n<\/p>\n<p><h3><strong>\u603b\u7ed3<\/strong><\/h3>\n<\/p>\n<p><p>\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u4e86\u89e3\u4e86Python\u5f80\u6587\u4ef6\u4e2d\u6dfb\u52a0\u6570\u636e\u7684\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528\u8ffd\u52a0\u6a21\u5f0f\u3001write()\u65b9\u6cd5\u3001with\u8bed\u53e5\u3001writelines()\u65b9\u6cd5\u7b49\u3002\u6211\u4eec\u8fd8\u63a2\u8ba8\u4e86\u5904\u7406\u6587\u4ef6\u8def\u5f84\u548c\u7f16\u7801\uff0c\u4ee5\u53ca\u5904\u7406\u5927\u6587\u4ef6\u7684\u65b9\u6cd5\u3002\u5e0c\u671b\u8fd9\u4e9b\u5185\u5bb9\u80fd\u5e2e\u52a9\u4f60\u66f4\u597d\u5730\u638c\u63e1Python\u7684\u6587\u4ef6\u64cd\u4f5c\u6280\u5de7\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u4ee5\u786e\u4fdd\u6587\u4ef6\u64cd\u4f5c\u7684\u9ad8\u6548\u6027\u548c\u6b63\u786e\u6027\u3002<\/p>\n<\/p>\n<p><p>\u6b64\u5916\uff0cPython\u7684\u6587\u4ef6\u64cd\u4f5c\u8fd8\u5305\u62ec\u8bfb\u53d6\u6587\u4ef6\u3001\u4fee\u6539\u6587\u4ef6\u7b49\u5176\u4ed6\u529f\u80fd\u3002\u4e86\u89e3\u8fd9\u4e9b\u529f\u80fd\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u5168\u9762\u5730\u638c\u63e1Python\u7684\u6587\u4ef6\u5904\u7406\u80fd\u529b\u3002\u5728\u8fdb\u884c\u6587\u4ef6\u64cd\u4f5c\u65f6\uff0c\u52a1\u5fc5\u6ce8\u610f\u6587\u4ef6\u7684\u6253\u5f00\u548c\u5173\u95ed\uff0c\u4ee5\u53ca\u6570\u636e\u7684\u6b63\u786e\u5904\u7406\uff0c\u4ee5\u907f\u514d\u6570\u636e\u4e22\u5931\u6216\u6587\u4ef6\u635f\u574f\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u4ee5\u8ffd\u52a0\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528<code>open()<\/code>\u51fd\u6570\u4ee5\u8ffd\u52a0\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6\u3002\u53ea\u9700\u5c06\u6a21\u5f0f\u53c2\u6570\u8bbe\u7f6e\u4e3a<code>&#39;a&#39;<\/code>\uff0c\u4f8b\u5982\uff1a<code>with open(&#39;file.txt&#39;, &#39;a&#39;) as file:<\/code>\u3002\u8fd9\u6837\uff0c\u60a8\u53ef\u4ee5\u5728\u6587\u4ef6\u672b\u5c3e\u6dfb\u52a0\u65b0\u6570\u636e\uff0c\u800c\u4e0d\u4f1a\u8986\u76d6\u73b0\u6709\u5185\u5bb9\u3002<\/p>\n<p><strong>\u4f7f\u7528Python\u6dfb\u52a0\u6570\u636e\u65f6\uff0c\u5982\u4f55\u786e\u4fdd\u6570\u636e\u683c\u5f0f\u6b63\u786e\uff1f<\/strong><br \/>\u786e\u4fdd\u6570\u636e\u683c\u5f0f\u6b63\u786e\uff0c\u53ef\u4ee5\u5728\u5199\u5165\u6570\u636e\u524d\u8fdb\u884c\u5fc5\u8981\u7684\u6570\u636e\u5904\u7406\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u6587\u672c\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\uff08\u5982<code>str.format()<\/code>\u6216f-string\uff09\u6765\u786e\u4fdd\u6570\u636e\u7684\u6e05\u6670\u548c\u53ef\u8bfb\u6027\u3002\u540c\u65f6\uff0c\u8003\u8651\u6dfb\u52a0\u6362\u884c\u7b26\u4ee5\u4fdd\u6301\u6570\u636e\u7ed3\u6784\u7684\u6574\u6d01\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\uff0c\u5982\u4f55\u5904\u7406\u6587\u4ef6\u5199\u5165\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u51fa\u73b0\u7684\u9519\u8bef\uff1f<\/strong><br \/>\u5728\u6587\u4ef6\u5199\u5165\u8fc7\u7a0b\u4e2d\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u5982\u6587\u4ef6\u4e0d\u5b58\u5728\u3001\u6743\u9650\u4e0d\u8db3\u7b49\u95ee\u9898\u3002\u53ef\u4ee5\u4f7f\u7528<code>try...except<\/code>\u8bed\u53e5\u6765\u6355\u83b7\u5f02\u5e38\uff0c\u5e76\u8fdb\u884c\u9002\u5f53\u7684\u9519\u8bef\u5904\u7406\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u5728<code>except<\/code>\u5757\u4e2d\u6253\u5370\u9519\u8bef\u4fe1\u606f\u6216\u8bb0\u5f55\u65e5\u5fd7\uff0c\u4ee5\u4fbf\u4e8e\u540e\u7eed\u6392\u67e5\u95ee\u9898\u3002\u8fd9\u6837\u53ef\u4ee5\u63d0\u9ad8\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u4e00\u3001Python\u5f80\u6587\u4ef6\u4e2d\u6dfb\u52a0\u6570\u636e\u7684\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528\u8ffd\u52a0\u6a21\u5f0f\u3001\u4f7f\u7528\u6587\u4ef6\u5bf9\u8c61\u7684write()\u65b9\u6cd5\u3001\u4f7f\u7528with\u8bed\u53e5\u3001\u4f7f [&hellip;]","protected":false},"author":3,"featured_media":1061548,"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\/1061530"}],"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=1061530"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1061530\/revisions"}],"predecessor-version":[{"id":1061551,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1061530\/revisions\/1061551"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1061548"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1061530"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1061530"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1061530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}