{"id":2862,"date":"2025-05-28T17:32:09","date_gmt":"2025-06-04T09:34:09","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=2862"},"modified":"2025-06-04T17:32:09","modified_gmt":"2025-06-04T09:34:09","slug":"python%e4%b8%ad%e7%9a%84seek%e5%87%bd%e6%95%b8%ef%bc%9a%e7%a7%bb%e5%8b%95%e6%96%87%e4%bb%b6%e8%ae%80-%e5%af%ab%e6%8c%87%e9%87%9d","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/python\/python%e4%b8%ad%e7%9a%84seek%e5%87%bd%e6%95%b8%ef%bc%9a%e7%a7%bb%e5%8b%95%e6%96%87%e4%bb%b6%e8%ae%80-%e5%af%ab%e6%8c%87%e9%87%9d\/","title":{"rendered":"Python \u4e2d\u7684 seek() \u51fd\u6578\uff1a\u9ad8\u6548\u79fb\u52d5\u6587\u4ef6\u8b80\/\u5beb\u6307\u91dd\u7684\u6700\u4f73\u5be6\u8e10\uff082025 \u66f4\u65b0\uff09"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"Python, seek(), \u6587\u4ef6\u8655\u7406, \u8b80\u53d6\u6307\u91dd\"><\/p>\n<p>\u5728 Python \u4e2d\uff0c`seek()` \u51fd\u6578\u662f\u4e00\u500b\u5f37\u5927\u4e14\u5e38\u7528\u7684\u5de5\u5177\uff0c\u8b93\u958b\u767c\u8005\u53ef\u4ee5\u9ad8\u6548\u5730\u79fb\u52d5\u6587\u4ef6\u7684\u8b80\u53d6\u6216\u5beb\u5165\u6307\u91dd\u3002\u9019\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6587\u4ef6\u8655\u7406\u7684\u6548\u7387\uff0c\u9084\u80fd\u8b93\u958b\u767c\u8005\u66f4\u9748\u6d3b\u5730\u64cd\u4f5c\u6587\u4ef6\u5167\u5bb9\u3002\u4ee5\u4e0b\u662f 2025 \u5e74\u6700\u65b0\u7684\u8a9e\u6cd5\u8207\u6700\u4f73\u5be6\u8e10\uff0c\u5e6b\u52a9\u4f60\u5145\u5206\u5229\u7528 `seek()` \u51fd\u6578\u3002<\/p>\n<h2>seek() \u51fd\u5f0f\u7684\u57fa\u672c\u7528\u6cd5<\/h2>\n<p>`seek()` \u51fd\u5f0f\u7684\u57fa\u672c\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p>&#8220;`python<br \/>\nfile_object.seek(offset, from_what)<br \/>\n&#8220;`<\/p>\n<p>&#8211; **offset**\uff1a\u6307\u5b9a\u8981\u79fb\u52d5\u7684\u5b57\u7bc0\u6578\u3002<br \/>\n&#8211; **from_what**\uff1a\u6307\u5b9a\u79fb\u52d5\u7684\u53c3\u8003\u9ede\uff0c\u8a72\u53c3\u6578\u53ef\u4ee5\u70ba\uff1a<br \/>\n  &#8211; `0`\uff08\u9810\u8a2d\u503c\uff09\uff1a\u5f9e\u6587\u4ef6\u958b\u982d\u958b\u59cb\u79fb\u52d5\u3002<br \/>\n  &#8211; `1`\uff1a\u5f9e\u7576\u524d\u4f4d\u7f6e\u958b\u59cb\u79fb\u52d5\u3002<br \/>\n  &#8211; `2`\uff1a\u5f9e\u6587\u4ef6\u672b\u5c3e\u958b\u59cb\u79fb\u52d5\u3002<\/p>\n<h2>from_what \u53c3\u6578\u7684\u610f\u7fa9<\/h2>\n<p>`from_what` \u53c3\u6578\u7684\u610f\u7fa9\u5177\u9ad4\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>0\uff08\u9810\u8a2d\u503c\uff09\uff1a<\/strong>\u5f9e\u6587\u4ef6\u958b\u982d\u958b\u59cb\u79fb\u52d5\uff0c\u6b63\u503c\u5411\u5f8c\u79fb\u52d5\uff0c\u8ca0\u503c\u5411\u524d\u79fb\u52d5\u3002<\/li>\n<li><strong>1\uff1a<\/strong>\u5f9e\u7576\u524d\u4f4d\u7f6e\u958b\u59cb\u79fb\u52d5\uff0c\u6b63\u503c\u5411\u5f8c\u79fb\u52d5\uff0c\u8ca0\u503c\u5411\u524d\u79fb\u52d5\u3002<\/li>\n<li><strong>2\uff1a<\/strong>\u5f9e\u6587\u4ef6\u672b\u5c3e\u958b\u59cb\u79fb\u52d5\uff0c\u6b63\u503c\u5411\u524d\u79fb\u52d5\uff0c\u8ca0\u503c\u5411\u5f8c\u79fb\u52d5\u3002<\/li>\n<\/ul>\n<h2>\u7bc4\u4f8b\u7a0b\u5f0f\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 `seek()` \u51fd\u5f0f\u7684\u7bc4\u4f8b\u7a0b\u5f0f\u78bc\uff0c\u5c55\u793a\u5982\u4f55\u6709\u6548\u5730\u64cd\u4f5c\u6587\u4ef6\u6307\u91dd\uff1a<\/p>\n<p>&#8220;`python<br \/>\n# \u958b\u555f\u4e00\u500b\u6587\u4ef6<br \/>\nwith open(&#8220;test.txt&#8221;, &#8220;r+&#8221;) as f:<br \/>\n    str = f.read(10)<br \/>\n    print(&#8220;\u8b80\u53d6\u7684\u5b57\u4e32\u662f : &#8220;, str)<\/p>\n<p>    # \u6aa2\u67e5\u7576\u524d\u6587\u4ef6\u4f4d\u7f6e<br \/>\n    position = f.tell()<br \/>\n    print(&#8220;\u7576\u524d\u6587\u4ef6\u4f4d\u7f6e : &#8220;, position)<\/p>\n<p>    # \u628a\u6307\u91dd\u91cd\u65b0\u5b9a\u4f4d\u5230\u6587\u4ef6\u958b\u59cb<br \/>\n    f.seek(0, 0)<br \/>\n    str = f.read(10)<br \/>\n    print(&#8220;\u91cd\u65b0\u8b80\u53d6\u5b57\u4e32 : &#8220;, str)<\/p>\n<p>    # \u5c07\u6307\u91dd\u91cd\u65b0\u5b9a\u4f4d\u5230\u6587\u4ef6\u672b\u5c3e<br \/>\n    f.seek(0, 2)<br \/>\n    str = f.read(10)<br \/>\n    print(&#8220;\u91cd\u65b0\u8b80\u53d6\u5b57\u4e32 : &#8220;, str)<br \/>\n&#8220;`<\/p>\n<p>\u57f7\u884c\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\uff0c\u5c07\u6703\u5f97\u5230\u4ee5\u4e0b\u7684\u7d50\u679c\uff1a<\/p>\n<p>&#8220;`python<br \/>\n\u8b80\u53d6\u7684\u5b57\u4e32\u662f :  This is t<br \/>\n\u7576\u524d\u6587\u4ef6\u4f4d\u7f6e :  10<br \/>\n\u91cd\u65b0\u8b80\u53d6\u5b57\u4e32 :  This is t<br \/>\n\u91cd\u65b0\u8b80\u53d6\u5b57\u4e32 :<br \/>\n&#8220;`<\/p>\n<h2>\u932f\u8aa4\u6392\u9664<\/h2>\n<p>\u5728\u4f7f\u7528 `seek()` \u51fd\u6578\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4ee5\u4e0b\u5e38\u898b\u932f\u8aa4\uff1a<\/p>\n<p>1. **\u6587\u4ef6\u672a\u958b\u555f**\uff1a\u78ba\u4fdd\u6587\u4ef6\u5728\u9032\u884c `seek()` \u64cd\u4f5c\u4e4b\u524d\u5df2\u7d93\u6b63\u78ba\u958b\u555f\u3002<br \/>\n2. **\u504f\u79fb\u91cf\u8d85\u51fa\u7bc4\u570d**\uff1a\u5982\u679c\u5728\u5f9e\u6587\u4ef6\u672b\u5c3e\u958b\u59cb\u79fb\u52d5\u6642\uff0c\u504f\u79fb\u91cf\u8d85\u51fa\u4e86\u6587\u4ef6\u5927\u5c0f\uff0c\u5c07\u6703\u5f15\u767c\u932f\u8aa4\u3002\u8acb\u78ba\u4fdd\u504f\u79fb\u91cf\u4e0d\u8d85\u904e\u6587\u4ef6\u7684\u7bc4\u570d\u3002<\/p>\n<h2>\u5ef6\u4f38\u61c9\u7528<\/h2>\n<p>&#8211; **\u96a8\u6a5f\u8b80\u53d6\u6587\u4ef6**\uff1a\u4f7f\u7528 `seek()` \u53ef\u4ee5\u8b93\u4f60\u96a8\u6a5f\u8b80\u53d6\u6587\u4ef6\u4e2d\u7684\u4efb\u610f\u90e8\u5206\uff0c\u9019\u5728\u8655\u7406\u5927\u578b\u6578\u64da\u6587\u4ef6\u6642\u7279\u5225\u6709\u7528\u3002<br \/>\n&#8211; **\u6587\u4ef6\u4fee\u526a**\uff1a\u53ef\u4ee5\u5229\u7528 `seek()` \u51fd\u6578\u4f86\u5feb\u901f\u79fb\u52d5\u5230\u6587\u4ef6\u7684\u7279\u5b9a\u4f4d\u7f6e\uff0c\u9032\u884c\u5167\u5bb9\u7684\u4fee\u526a\u6216\u4fee\u6539\u3002<\/p>\n<p>\u60f3\u4e86\u89e3\u66f4\u591a Python \u6587\u4ef6\u8655\u7406\u7684\u6280\u5de7\uff0c\u8acb\u53c3\u8003 [\u9019\u88e1\u7684\u6559\u5b78\u6587\u7ae0](https:\/\/vocus.cc) \u3002<\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>Python \u7684 `seek()` \u51fd\u5f0f\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u8b93\u958b\u767c\u8005\u53ef\u4ee5\u9748\u6d3b\u5730\u64cd\u4f5c\u6587\u4ef6\u7684\u8b80\/\u5beb\u6307\u91dd\u3002\u5b78\u6703\u5982\u4f55\u4f7f\u7528 `seek()` \u4e0d\u50c5\u53ef\u4ee5\u63d0\u9ad8\u4f60\u7684\u7de8\u7a0b\u6548\u7387\uff0c\u9084\u80fd\u589e\u5f37\u4f60\u5c0d\u6587\u4ef6\u64cd\u4f5c\u7684\u638c\u63a7\u529b\u3002<\/p>\n<h2>Q&#038;A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n<p>**Q1\uff1a`seek()` \u51fd\u6578\u7684\u8fd4\u56de\u503c\u662f\u4ec0\u9ebc\uff1f**<br \/>\nA1\uff1a`seek()` \u51fd\u6578\u672c\u8eab\u6c92\u6709\u8fd4\u56de\u503c\uff0c\u4f46\u53ef\u4ee5\u4f7f\u7528 `tell()` \u51fd\u6578\u4f86\u7372\u53d6\u7576\u524d\u7684\u6587\u4ef6\u6307\u91dd\u4f4d\u7f6e\u3002<\/p>\n<p>**Q2\uff1a\u6211\u53ef\u4ee5\u5728\u4e8c\u9032\u5236\u6587\u4ef6\u4e2d\u4f7f\u7528 `seek()` \u55ce\uff1f**<br \/>\nA2\uff1a\u662f\u7684\uff0c`seek()` \u51fd\u6578\u540c\u6a23\u9069\u7528\u65bc\u4e8c\u9032\u5236\u6587\u4ef6\uff0c\u9019\u4f7f\u5f97\u4f60\u53ef\u4ee5\u9748\u6d3b\u5730\u8b80\u53d6\u6216\u5beb\u5165\u4e8c\u9032\u5236\u6578\u64da\u3002<\/p>\n<p>**Q3\uff1a\u5982\u4f55\u6aa2\u67e5\u6587\u4ef6\u662f\u5426\u6210\u529f\u958b\u555f\uff1f**<br \/>\nA3\uff1a\u5728\u958b\u555f\u6587\u4ef6\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528 `try&#8230;except` \u7d50\u69cb\u4f86\u6355\u7372\u53ef\u80fd\u767c\u751f\u7684\u7570\u5e38\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6587\u4ef6\u6210\u529f\u958b\u555f\u5f8c\u518d\u9032\u884c\u5176\u4ed6\u64cd\u4f5c\u3002<\/p>\n<p>&#8212;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>seek()\u51fd\u6578\u662fPython\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u51fd\u6578\uff0c\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u79fb\u52d5\u6587\u4ef6\u7684\u8b80\/\u5beb\u6307\u91dd\uff0c\u4ee5\u4fbf\u5c0d\u6587\u4ef6\u9032\u884c\u66f4\u6709\u6548\u7684\u64cd\u4f5c\u3002\u672c\u6587\u5c07\u4ecb\u7d39seek()\u51fd\u6578\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u4ee5\u53ca\u5b83\u7684\u512a\u9ede\u548c\u7f3a\u9ede\u3002<\/p>\n","protected":false},"author":1,"featured_media":2518,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[18],"tags":[15],"class_list":["post-2862","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python","tag-python"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/badgameshow.com\/steven\/wp-content\/uploads\/2022\/12\/DALL\u00b7E-2022-12-28-14.25.55-\u62f7\u8c9d2.png","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-Ka","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2862","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=2862"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2862\/revisions"}],"predecessor-version":[{"id":2863,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2862\/revisions\/2863"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/2518"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=2862"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=2862"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=2862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}