{"id":190,"date":"2023-02-09T10:19:50","date_gmt":"2023-02-09T02:19:50","guid":{"rendered":"https:\/\/www.peijun.site\/?p=190"},"modified":"2024-01-10T10:48:22","modified_gmt":"2024-01-10T02:48:22","slug":"3-%e6%96%87%e4%bb%b6%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/www.peijun.site\/index.php\/2023\/02\/09\/3-%e6%96%87%e4%bb%b6%e6%93%8d%e4%bd%9c\/","title":{"rendered":"3. \u6587\u4ef6\u64cd\u4f5c"},"content":{"rendered":"<p>&nbsp;<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">'''\r\n\u6587\u4ef6\u64cd\u4f5c\r\n\r\nopen(file, mode='r', buffering=-1, encoding=None, errors=None, newline=None, closefd=True, opener=None)\r\n\r\n1.file\u53c2\u6570\r\nfile\u53c2\u6570\u662f\u8981\u6253\u5f00\u7684\u6587\u4ef6\uff0c\u53ef\u4ee5\u662f\u5b57\u7b26\u4e32\u6216\u6574\u6570\u3002\u5982\u679cfile\u662f\u5b57\u7b26\u4e32\u8868\u793a\u6587\u4ef6\u540d\uff0c\u6587\u4ef6\u540d\u53ef\u4ee5\u662f\u76f8\u5bf9\u5f53\u524d\u76ee\u5f55\u7684\u8def\u5f84\uff0c\u4e5f\u53ef\u4ee5\u662f\u7edd\u5bf9\u8def\u5f84\uff1b\u5982\u679cfile\u662f\u6574\u6570\u8868\u793a\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u6587\u4ef6\u63cf\u8ff0\u7b26\u6307\u5411\u4e00\u4e2a\u5df2\u7ecf\u6253\u5f00\u7684\u6587\u4ef6\r\n \r\n2.mode\u53c2\u6570\r\n\u8bbe\u7f6e\u6253\u5f00\u6a21\u5f0f\uff0c\u4e8c\u8fdb\u5236\u6587\u4ef6\u8bbe\u7f6erb\uff0cwb\uff0cxb\uff0cab\uff0c\u5982\u679c\u662f\u6587\u672c\u6587\u4ef6\uff0c\u5219\u8bbe\u7f6er\uff0cw\uff0cx\uff0ca\r\n\r\nr\uff1a\u53ea\u8bfb\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6\uff08\u9ed8\u8ba4\uff09\r\nw\uff1a\u5199\u5165\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6\uff0c\u4f1a\u8986\u76d6\u5df2\u7ecf\u5b58\u5728\u7684\u6587\u4ef6\r\nx\uff1a\u72ec\u5360\u521b\u5efa\u6a21\u5f0f\uff0c\u6587\u4ef6\u4e0d\u5b58\u5728\u65f6\u521b\u5efa\u5e76\u4ee5\u5199\u5165\u6a21\u5f0f\u6253\u5f00\uff0c\u5982\u679c\u6587\u4ef6\u5df2\u5b58\u5728\u5219\u629b\u51fa\u5f02\u5e38\r\na\uff1a\u8ffd\u52a0\u6a21\u5f0f\uff0c\u5982\u679c\u6587\u4ef6\u5b58\u5728\uff0c\u5219\u5199\u5165\u65f6\u5185\u5bb9\u8ffd\u52a0\u5230\u6587\u4ef6\u672b\u5c3e\r\nb\uff1a\u4e8c\u8fdb\u5236\u6a21\u5f0f\r\n+\uff1a\u66f4\u65b0\u6a21\u5f0f\r\nt\uff1a\u6587\u672c\u6a21\u5f0f\uff08\u9ed8\u8ba4\uff09\r\n \r\n3.buffering\u53c2\u6570\r\nbuffering\u662f\u8bbe\u7f6e\u7f13\u51b2\u533a\u7b56\u7565\uff0c\u9ed8\u8ba4\u503c\u4e3a-1\uff0c\u5f53buffering=-1\u65f6\u7cfb\u7edf\u4f1a\u81ea\u52a8\u8bbe\u7f6e\u7f13\u51b2\u533a\uff0c\u901a\u5e38\u662f4096\u62168192\u5b57\u8282\uff1b\u5f53buffering=0\u65f6\u5173\u95ed\u7f13\u51b2\u533a\uff0c\u5173\u95ed\u7f13\u51b2\u533a\u65f6\u6570\u636e\u76f4\u63a5\u5199\u5165\u6587\u4ef6\u4e2d\uff0c\u8fd9\u79cd\u6a21\u5f0f\u4e3b\u8981\u7528\u4e8e\u4e8c\u8fdb\u5236\u6587\u4ef6\u7684\u5199\u5165\u64cd\u4f5c\uff1b\u5f53buffering&gt;0\u65f6\uff0cbuffering\u7528\u6765\u8bbe\u7f6e\u7f13\u51b2\u533a\u5b57\u8282\u5927\u5c0f\r\n \r\n\r\n4.encoding\r\n\u8bbe\u7f6e\u6587\u4ef6\u7f16\u7801\r\n \r\n\r\n5.errors\r\n\u7528\u6765\u6307\u5b9a\u7f16\u7801\u53d1\u751f\u9519\u8bef\u65f6\u5982\u4f55\u5904\u7406\r\n \r\n\r\n6.newline\r\n\u7528\u6765\u8bbe\u7f6e\u6362\u884c\u6a21\u5f0f\r\n'''\r\n\r\nimport os\r\n\r\nfilepath = os.path.join(os.getcwd(), \"assets\\\\file.txt\")\r\nif not os.path.exists(filepath):\r\n    print('\u6587\u4ef6\u4e0d\u5b58\u5728')\r\nelse:\r\n    print('\u6587\u4ef6\u5df2\u5b58\u5728')\r\n\r\nfp = open(filepath, mode='w+')\r\nfp.writelines(\"Hello World!\\n\")\r\nfp.writelines(\"Line2...\\n\")\r\n# fp.flush() #\u5237\u65b0\u5199\u7f13\u51b2\u533a\uff0c\u6570\u636e\u4f1a\u5199\u5165\u5230\u6587\u4ef6\u4e2d\r\n\r\nfp.close()\r\n\r\nos.remove(filepath)\r\n<\/pre>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>python\u6587\u4ef6\u64cd\u4f5c<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/posts\/190"}],"collection":[{"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/comments?post=190"}],"version-history":[{"count":1,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/posts\/190\/revisions"}],"predecessor-version":[{"id":191,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/posts\/190\/revisions\/191"}],"wp:attachment":[{"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/media?parent=190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/categories?post=190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/tags?post=190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}