{"id":90247,"date":"2026-08-04T22:56:35","date_gmt":"2026-08-04T14:56:35","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/90247.html"},"modified":"2026-08-04T22:56:35","modified_gmt":"2026-08-04T14:56:35","slug":"python%e6%96%87%e4%bb%b6%e8%af%bb%e5%86%99%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/90247.html","title":{"rendered":"Python\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c"},"content":{"rendered":"

\u4e00\u3001open\u6587\u4ef6\u6253\u5f00<\/h4>\n\n\u6a21\u5f0f\u4f5c\u7528\u4e8c\u8fdb\u5236\u6a21\u5f0f\u7279\u70b9<\/tr>\n\n\n\n\n
r<\/td>\n\u53ea\u8bfb<\/td>\nrb<\/td>\n\u6587\u4ef6\u4e0d\u5b58\u5728\u2192\u62a5\u9519；\u4e0d\u80fd\u5199<\/td>\n<\/tr>\n
w<\/td>\n\u8986\u76d6\u5199<\/td>\nwb<\/td>\n\u4e0d\u5b58\u5728\u81ea\u52a8\u521b\u5efa；\u6253\u5f00\u77ac\u95f4\u6e05\u7a7a\u539f\u6709\u5185\u5bb9<\/td>\n<\/tr>\n
a<\/td>\n\u8ffd\u52a0\u5199<\/td>\nab<\/td>\n\n

\u4e0d\u5b58\u5728\u81ea\u52a8\u521b\u5efa；\u5728\u6587\u4ef6\u672b\u5c3e\u8ffd\u52a0，\u4e0d\u8986\u76d6<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

fp = open("a.txt","w",encoding="utf\u20118")<\/p>\n

fp.write("\u4f60\u597d")<\/p>\n

fp.close()<\/p>\n

\u6253\u5f00\u6587\u4ef6\u7528\u5b8c\u5fc5\u987b\u91ca\u653e\u8d44\u6e90<\/p>\n

1\u3001fp.close()<\/p>\n

2\u3001with open(\u8def\u5f84,\u6253\u5f00\u65b9\u5f0f,encoding="utf\u20118") as f:<\/p>\n

\u00a0 \u00a0 \u00a0\u00a0encoding="utf\u20118"，\u4e0d\u6307\u5b9a\u4f1a\u51fa\u73b0\u4e2d\u6587\u4e71\u7801<\/span><\/p>\n

\u00a0 \u00a0 \u00a0\u00a0with \u8bed\u53e5：\u79bb\u5f00\u4ee3\u7801\u5757\u81ea\u52a8\u5173\u95ed\u6587\u4ef6，\u4e0d\u7528\u624b\u52a8 close<\/span><\/p>\n<\/p>\n

\u4e8c\u3001\u6587\u4ef6\u8bfb\u53d6\u76f8\u5173\u65b9\u6cd5+\u6587\u4ef6\u6307\u9488<\/h4>\n

\u6587\u4ef6\u5bf9\u8c61\u5185\u90e8\u6709\u4e00\u4e2a\u6587\u4ef6\u6307\u9488，\u8bb0\u5f55\u5f53\u524d\u8bfb\u5199\u4f4d\u7f6e；\u8bfb\u5b8c\u4e4b\u540e\u6307\u9488\u8dd1\u5230\u672b\u5c3e，\u518d\u6b21\u8bfb\u53d6\u8fd4\u56de\u7a7a\u5b57\u7b26\u4e32''<\/p>\n

1\u3001fp.read(n)<\/p>\n

\u8bfb\u53d6\u5168\u90e8 \/ \u6307\u5b9a n \u4e2a\u5b57\u7b26；\u6307\u9488\u5411\u540e\u79fb\u52a8<\/p>\n<\/p>\n

2\u3001fp.readline()<\/p>\n

\u8bfb\u53d6\u4e00\u884c，\u8fd4\u56de\u5b57\u7b26\u4e32；\u8bfb\u5230\u6587\u4ef6\u672b\u5c3e\u8fd4\u56de\u7a7a\u5b57\u7b26\u4e32''<\/p>\n<\/p>\n

3\u3001fp.readlines([size])<\/p>\n

\u8bfb\u53d6\u591a\u884c，\u8fd4\u56de\u884c\u7684\u5217\u8868，\u6bcf\u4e00\u884c\u5e26\u6362\u884c\u7b26\\\\n；\u6267\u884c\u5b8c\u6307\u9488\u76f4\u63a5\u5230\u6587\u4ef6\u672b\u5c3e<\/p>\n

\u6267\u884creadlines()\u4e4b\u540e，\u76f4\u63a5\u8fed\u4ee3fp\u62ff\u4e0d\u5230\u5185\u5bb9；\u9700\u8981fp.seek(0)\u91cd\u7f6e\u6307\u9488\u5230\u5f00\u5934<\/span><\/p>\n

readlines \u6307\u5b9a sizehint \u4e4b\u540e，\u4f1a\u628a\u6307\u6807\u6240\u5728\u7684\u5b8c\u6574\u4e00\u884c\u8bfb\u5b8c；readline \u5e26 size \u53c2\u6570，\u4f1a\u76f4\u63a5\u622a\u65ad\u672c\u884c，\u4e0d\u4f1a\u8bfb\u5b8c\u4e00\u6574\u884c<\/span><\/p>\n<\/p>\n

4\u3001fp.seek(0)<\/p>\n

\u628a\u6587\u4ef6\u6307\u9488\u91cd\u7f6e\u5230\u6587\u4ef6\u8d77\u59cb\u4f4d\u7f6e<\/p>\n<\/p>\n

5\u3001fp.flush()<\/p>\n

\u5f3a\u5236\u628a\u7f13\u51b2\u533a\u5185\u5b58\u7684\u6570\u636e\u5237\u65b0\u5199\u5165\u78c1\u76d8<\/p>\n<\/p>\n

\u89e6\u53d1\u5199\u78c1\u76d8\u4e09\u79cd\u60c5\u51b5：<\/p>\n

\u2460\u8c03\u7528flush()\u5f3a\u5236\u5237\u65b0 \u2461\u8c03\u7528close()\u5173\u95ed\u6587\u4ef6 \u2462\u7f13\u51b2\u533a\u5b58\u6ee1\u81ea\u52a8\u5237\u65b0<\/p>\n

<\/h4>\n

\u4e09\u3001json\u6a21\u5757（\u8f7b\u91cf\u7ea7\u6570\u636e\u4ea4\u6362\u683c\u5f0f）<\/h4>\n

1\u3001\u64cd\u4f5c\u5b57\u7b26\u4e32（\u5185\u5b58）<\/p>\n

json.dumps()：Python \u5bf9\u8c61 \u2192 json \u5b57\u7b26\u4e32<\/p>\n

json.loads()：json \u5b57\u7b26\u4e32 \u2192 Python \u5bf9\u8c61<\/p>\n<\/p>\n

2\u3001\u76f4\u63a5\u64cd\u4f5c\u6587\u4ef6\u5bf9\u8c61fp<\/p>\n

json.dump(obj,fp)：\u628a python \u5bf9\u8c61\u5199\u5165\u6587\u4ef6<\/p>\n

json.load(fp)：\u4ece\u6587\u4ef6\u8bfb\u53d6，\u8f6c\u4e3a python \u5bf9\u8c61<\/p>\n<\/p>\n

\u5e38\u7528\u53c2\u6570：<\/p>\n

json.dump(data,fp,ensure_ascii=False,indent=2)<\/p>\n

\u2460ensure_ascii=False：\u4e2d\u6587\u4e0d\u8f6c\u4e49\u4e3a \\\\uXXXX<\/p>\n

\u2461indent=2：\u683c\u5f0f\u5316\u7f29\u8fdb\u8f93\u51fa<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e00\u3001open\u6587\u4ef6\u6253\u5f00\u6a21\u5f0f\u4f5c\u7528\u4e8c\u8fdb\u5236\u6a21\u5f0f\u7279\u70b9r\u53ea\u8bfbrb\u6587\u4ef6\u4e0d\u5b58\u5728\u2192\u62a5\u9519；\u4e0d\u80fd\u5199w\u8986\u76d6\u5199wb\u4e0d\u5b58\u5728\u81ea\u52a8\u521b\u5efa；\u6253\u5f00\u77ac\u95f4\u6e05\u7a7a\u539f\u6709\u5185\u5bb9a\u8ffd\u52a0\u5199ab
\n\u4e0d\u5b58\u5728\u81ea\u52a8\u521b\u5efa；\u5728\u6587\u4ef6\u672b\u5c3e\u8ffd\u52a0，\u4e0d\u8986\u76d6fp open(\\”a.txt\\”,\\”w\\”,encoding\\”utf\u20118\\”)fp.write(\\”\u4f60\u597d\\”)fp.close()\u6253\u5f00\u6587\u4ef6\u7528\u5b8c\u5fc5\u987b\u91ca\u653e\u8d44\u6e901\u3001fp.close()2\u3001with open(\u8def\u5f84,\u6253\u5f00\u65b9\u5f0f,encoding\\”utf\u20118\\”) as<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,81,43],"topic":[],"class_list":["post-90247","post","type-post","status-publish","format-standard","hentry","category-server","tag-java","tag-python","tag-43"],"yoast_head":"\nPython\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/90247.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c - 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