{"rsdb":{"rid":"314495","subhead":"","postdate":"0","aid":"227660","fid":"77","uid":"1","topic":"1","content":"<div id=\"cnblogs_post_body\" class=\"blogpost-body cnblogs-markdown\">\n <div class=\"toc\"> \n  <p class=\"toc-title\">\u76ee\u5f55<\/p> \n  <div class=\"toc-list\"> \n   <ul> \n    <li><a>\u6587\u4ef6\u64cd\u4f5c<\/a><\/li> \n    <li><a>r,w,a (******)<\/a><\/li> \n    <li><a>rb,wb,ab(****)<\/a><\/li> \n    <li><a>r+,w+,a+ (r+)<\/a><\/li> \n    <li><a>\u5176\u4ed6\u64cd\u4f5c:<\/a><\/li> \n   <\/ul> \n  <\/div> \n <\/div> \n <h3 id=\"\u6587\u4ef6\u64cd\u4f5c\">\u6587\u4ef6\u64cd\u4f5c<\/h3> \n <pre class=\"python\"><code>open  -- \u6253\u5f00\u6587\u4ef6\nfile  -- \u6587\u4ef6\u8def\u5f84\nmode  -- \u64cd\u4f5c\u6587\u4ef6\u7684\u6a21\u5f0f\nencoding -- \u6587\u4ef6\u7684\u7f16\u7801\u96c6\n\n\u6253\u5f00\u6587\u4ef6\n\u64cd\u4f5c\u6587\u4ef6\n\u5173\u95ed\u6587\u4ef6<\/code><\/pre> \n <h3 id=\"rwa\">r,w,a (******)<\/h3> \n <pre class=\"python\"><code>     r: \u8bfb\u6587\u672c\n        read()  \u5168\u90e8\u8bfb\u53d6\n        read(3) \u770b\u6587\u4ef6\u7684\u64cd\u4f5c\u65b9\u5f0f r\/w\/a \u5b57\u7b26\n        readline \u8bfb\u53d6\u4e00\u884c(\u81ea\u5e26\u6362\u884c\u7b26)\n        readlines() \u4e00\u884c\u4e00\u884c\u8bfb\u53d6\u5b58\u653e\u5728\u5217\u8868\u4e2d\n\n     w:\u6e05\u7a7a,\u5199\n        open(&quot;xxx&quot;,&quot;w&quot;,encoding=&quot;utf-8&quot;)  # \u8fdb\u884c\u6e05\u7a7a\n        write()  \u53ea\u80fd\u5199\u5b57\u7b26\u4e32\n\n     a:\u8ffd\u52a0\n        \u5728\u6587\u672c\u7684\u672b\u5c3e\u8fdb\u884c\u5199\u5165\n        write()<\/code><\/pre> \n <h3 id=\"rbwbab\">rb,wb,ab(****)<\/h3> \n <pre class=\"python\"><code>    rb:\u8bfb\u5b57\u8282\n        read()  \u5168\u90e8\u8bfb\u53d6\n        read(3) \u770b\u6587\u4ef6\u7684\u64cd\u4f5c\u65b9\u5f0f  rb\/wb\/ab \u5b57\u8282\n        readline \u8bfb\u53d6\u4e00\u884c(\u81ea\u5e26\u6362\u884c\u7b26)\n        readlines() \u4e00\u884c\u4e00\u884c\u8bfb\u53d6\u5b58\u653e\u5728\u5217\u8868\u4e2d\n\n    wb:\u6e05\u7a7a,\u5199\n        open(&quot;xxx&quot;,&quot;wb&quot;)  # \u8fdb\u884c\u6e05\u7a7a\n            write()  \u53ea\u80fd\u5199\u5b57\u8282\n\n    ab:\u8ffd\u52a0\n        open(&quot;xxx&quot;,&quot;ab&quot;)\n            write()  \u53ea\u80fd\u5199\u5b57\u8282<\/code><\/pre> \n <h3 id=\"rwa-r\">r+,w+,a+ (r+)<\/h3> \n <pre class=\"python\"><code>    r+:\u8bfb\u5199\n        \u9519\u8bef\u7684\u65b9\u5f0f\u662f\u5199\u8bfb\n        \u5148\u8bfb\u540e\u5199\n\n    w+:\u6e05\u7a7a\u5199,\u8bfb\n        1.\u6e05\u7a7a\u6587\u4ef6\n        2.\u8bfb\u53d6\u5185\u5bb9(\u9ed8\u8ba4\u8bfb\u53d6\u7684\u662f\u7a7a)\n        3.\u79fb\u52a8\u5149\u6807\n\n    a+:\u8ffd\u52a0\u5199,\u8bfb\n        1.\u5148\u5199\u540e\u8bfb\n        2.\u8bfb\u53d6\u5185\u5bb9(\u9ed8\u8ba4\u8bfb\u53d6\u7684\u662f\u7a7a)\n        3.\u79fb\u52a8\u5149\u6807\n# \u6ce8\u610f\u70b9: (a,ab,a+)\u5c06\u5149\u6807\u79fb\u52a8\u5230\u67d0\u4e2a\u4f4d\u7f6e\u8fdb\u884c,\u5199\u5165\u7684\u65f6\u5019\u8fd8\u662f\u5728\u6587\u4ef6\u7684\u672b\u5c3e<\/code><\/pre> \n <h3 id=\"\u5176\u4ed6\u64cd\u4f5c\">\u5176\u4ed6\u64cd\u4f5c:<\/h3> \n <pre class=\"python\"><code>    tell()  \u67e5\u770b\u5149\u6807\u8fd4\u56de\u7684\u662f\u5b57\u8282\n    seek() \u79fb\u52a8\u5149\u6807\n        seek(0,0) \u79fb\u52a8\u6587\u4ef6\u5934\u90e8\n        seek(0,1) \u5f53\u524d\u4f4d\u7f6e\n        seek(0,2) \u79fb\u52a8\u6587\u4ef6\u672b\u5c3e\n\n        seek(3)  # \u6309\u7167\u5b57\u8282\u8fdb\u884c\u8ba1\u7b97 (\u8ba1\u7b97\u65b9\u5f0f\u6839\u636e\u7f16\u7801\u8ba1\u7b97)\n\n    with open(&quot;\u6587\u4ef6\u8def\u5f84&quot;,&quot;\u64cd\u4f5c\u6a21\u5f0f&quot;,\u7f16\u7801&quot;)as f:\n        \u64cd\u4f5c\u6587\u4ef6\n\n    with open\u7684\u597d\u5904:\n        1.\u53ef\u4ee5\u540c\u65f6\u6253\u5f00\u591a\u4e2a\u6587\u4ef6\n        2.\u80fd\u591f\u81ea\u52a8\u5173\u95ed\u6587\u4ef6<\/code><\/pre> \n <pre class=\"python\"><code>    \u4fee\u6539\u6587\u4ef6\u5185\u5bb9:\n        1.\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6587\u4ef6\n        2.\u5c06\u6587\u4ef6\u4e2d\u7684\u5185\u5bb9\u8fdb\u884c\u66ff\u6362\n        3.\u66ff\u6362\u540e\u7684\u5185\u5bb9\u5199\u5165\u65b0\u6587\u4ef6\u4e2d\n        4.\u6539\u53d8\u6587\u4ef6\u540d<\/code><\/pre> \n <h4 id=\"\u91cd\u70b9\">\u91cd\u70b9<\/h4> \n <pre class=\"python\"><code>    \u8def\u5f84:\n        \u7edd\u5bf9\u8def\u5f84: \u4ece\u78c1\u76d8\u6839\u90e8\u8fdb\u884c\u67e5\u627e\n        \u76f8\u5bf9\u8def\u5f84: ..\/\u8fd4\u56de\u4e0a\u4e00\u7ea7  --\u63a8\u8350\u4f7f\u7528\n        \u8f6c\u4e49:\n            1.&quot;C:\\\\user\\\\ner&quot;\n            2. r&quot;C:\\user\\ner&quot;  -- \u63a8\u8350\u4f7f\u7528<\/code><\/pre>\n<\/div>","orderid":"0","title":"\u5b66\u4e608.\u603b\u7ed3#\u6587\u4ef6\u64cd\u4f5c \u8bfb \u5199 \u52a0","smalltitle":"","mid":"0","fname":"Python","special_id":"0","bak_id":"0","info":"0","hits":"51","pages":"1","comments":"0","posttime":"2019-07-15 20:09:52","list":"1563192592","username":"admin","author":"","copyfrom":"","copyfromurl":"","titlecolor":"","fonttype":"0","titleicon":"0","picurl":"https:\/\/www.cppentry.com\/upload_files\/","ispic":"0","yz":"1","yzer":"","yztime":"0","levels":"0","levelstime":"0","keywords":"<A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=%D1%A7%CF%B0' target=_blank>\u5b66\u4e60<\/A> <A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=%D7%DC%BD%E1' target=_blank>\u603b\u7ed3<\/A> <A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=%CE%C4%BC%FE' target=_blank>\u6587\u4ef6<\/A> <A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=%B2%D9%D7%F7' target=_blank>\u64cd\u4f5c<\/A>","jumpurl":"","iframeurl":"","style":"","template":"a:3:{s:4:\"head\";s:0:\"\";s:4:\"foot\";s:0:\"\";s:8:\"bencandy\";s:0:\"\";}","target":"0","ip":"47.106.78.186","lastfid":"0","money":"0","buyuser":"","passwd":"","allowdown":"","allowview":"","editer":"","edittime":"0","begintime":"0","endtime":"0","description":"\u5b66\u4e608.\u603b\u7ed3#\u6587\u4ef6\u64cd\u4f5c \u8bfb \u5199 \u52a0","lastview":"1714019989","digg_num":"0","digg_time":"0","forbidcomment":"0","ifvote":"0","heart":"","htmlname":"","city_id":"0"},"page":"1"}