print(\n \"{:\u003C20} | {:\u003C9} | {:\u003C9} | {:\u003C9} | {:\u003C9} | {:\u003C9}\".format(\"Model\", \"Accuracy\", \"Precision\", \"Recall\", \"F1 Score\",\n \"AUC\"))\n results_df = pd.DataFrame(columns=[\"Model\", \"Accuracy\", \"Precision\", \"Recall\", \"F1 Score\", \"AUC\"])\n

时间: 2025-03-31 19:15:13 浏览: 20
<think>好的,我现在需要帮助用户分析他们提供的Python代码段。首先,用户展示了一段使用字符串格式化和创建DataFrame的代码,可能用于记录模型评估结果。用户的需求可能是理解这段代码的作用,或者想确认代码是否正确。 首先,我会逐行解析代码。第一行是print语句,使用了format方法,里面的格式化字符串包含多个带有<20和<9的占位符。这应该是为了对齐不同长度的文本,比如模型名称可能较长,而指标名称较短。然后用户创建了一个DataFrame,列名与print中的一致。 接下来,我需要检查用户可能的问题点。比如,用户是否了解字符串格式化的语法?是否知道\u003C是Unicode转义的'<'符号?可能需要解释格式字符串中的冒号和<号的作用,比如{:<20}表示左对齐,宽度20字符。同时,DataFrame的列名是否与打印的标题一致,以确保后续数据填充正确。 另外,用户可能想知道这段代码的用途,应该解释这是在准备输出表格的表头和对应的数据结构,用于存储不同模型的评估指标。还可能需要注意代码中的细节,比如转义字符\n和双引号的使用是否正确,是否有拼写错误或格式错误。 最后,要确保回答结构清晰,分步骤说明代码各部分的功能,并指出潜在需要注意的地方,比如对齐方式、列名匹配等,帮助用户全面理解代码的作用和正确性。</think>你提供的代码片段主要用于构建机器学习模型评估结果的格式化输出和数据结构。我分三部分帮你解析: 一、字符串格式化输出部分 代码:print("\n \"{:<20} | {:<9} | {:<9} | {:<9} | {:<9} | {:<9}\".format("Model", "Accuracy", "Precision", "Recall", "F1 Score", "AUC")) 作用解析: 1. \u003C是Unicode编码的'<'符号,等同于{:<20}表示左对齐 2. 字段宽度设置: - 模型名称列保留20字符宽度:{:<20} - 各指标列保留9字符宽度:{:<9} 3. 输出效果示例: ``` Model | Accuracy | Precision | Recall | F1 Score | AUC ``` 二、DataFrame创建部分 代码:results_df = pd.DataFrame(columns=["Model", "Accuracy", "Precision", "Recall", "F1 Score", "AUC"]) 作用解析: 1. 创建包含6列的空白表格 2. 列顺序与print语句完全对应 3. 后续可通过results_df.append()添加各模型评估结果 三、需要特别注意的细节 1. 转义字符使用:\n实现换行,使输出更美观 2. 列对齐一致性:字符串格式与DataFrame列顺序严格对应 3. 字段宽度设计:Model列最宽(适合长模型名),指标列较窄(适合数值展示) 4. 扩展性:需要确保后续添加数据时,数值的格式化(如保留小数位)与列宽匹配 典型使用场景:在机器学习模型对比实验中,用于统一记录和展示不同模型的性能指标。
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import requests # 修改 s=2025 url = 'https://142.171.5.220/b3.php?q=C009DD69&td=2&p=1' headers = { 'Cookie': 'rz81px=nnqp6jomv3lvu', 'User-Agent': 'okhttp/4.12.0', 'Connection': 'Keep-Alive' } response = requests.get(url, headers=headers, verify=False) print("Status Code:", response.status_code) print("Response Content:", response.text) 我访问后网址返回一堆字符看不懂, warnings.warn( Status Code: 200 Response Content: //C009DD699F7A5A47AD07E4EF3AB9FD83CEF509A583E7B94443CDB3ACF2C5E7EB84CD|C07AAC6D3F81D6E004FC4614DE6C27751A55937B0A211A92AF1226322E727A3F5A148F71D95B743A////A9DF4AE99F7E474ABC0BE5F13F034605185591A981D76E3072A2F6879BA7D9A7FDC244AD72E9A8EEE0|CA7CAB683FF1D9E70F8A336DDF6F25751824937B79261E95D81F5D3752027C4B2F13FF72D058094C////C009DD699F7A5A97D02688B301DE80A1988111CDDDE4E53952A6FC8087A5F3A6FEDB47A34FE0A8F0FCF444096ACDC30D4BAD0499331EDDF9C6C734741E0006251DB3FB69AE32301B2A5F8639F9227201B6EA42502EE25D7951E6CA99E15357AF078F30A423D74913DB7A8F53FA6018C0723681DBA8E09E7EE589746AFCC46B4C58611A1416E09238665C609A|C17BD71948F0DD9201833163AC1B240F1E5FE60800556F92D71B5E4254720F4C2A62FF77DB58754E////C009DD699F7A5A92075C9CDD78CEEEDEB3E1|C008DB6A3C85ACE775F84511A91A51006A5FE6797B2269E0D81F5D35547909342166F575D1580B3E////C009DD699F7A5A44AA3AE6C32DB1DABBCDC303AB9DFDBA5A6BCF9ABBF1F5CDE89FE823F8658CCDE8B0A0417D3EE132A5927EAF6E4549C59BBAFA8BA57D10727A2EDA58F7AE2614763B585546E65C281DCFB6740A4BDE222A618FBE82A7106EDC5A8950E534B6350AB20A9539864A439F716CE4C1E0B3AE1BAABD1E3FED85026C0E33244B|C20BD66C4EF6DFE403FC3962A96850031B21E60D7B571AE1DB132F3355707E382965F401DC29793C////C009DD699F7A5A91D02688B301DE80A1988818C0DFD9F9316C84FAA4B0A7E993F7EE40A769FFA4E0EAF15F2465EFC1075EA00E952EAD322ECDC0207F2A2904331DB3E068A4232CCFB9EA840CFB226930B6EE5F5530F257565CE6FEACE2585BAC198030882DDD663ADB41A951D14416E6663987CDA8E09E7EED8F775AD4C4684D58632D1A18FD9F3A4A5C71B39991E90A21A9CEA12C|CB0ADE643C82AC9B748F316CD86D20751E50E60D7D511CE0AB1E2F3954017B3A2065F970AB5A7940////C20BDF6A25F1DE90035FB9E17BC2E6D1BED74BF0B48AFE600990B8E7ADE6A998B2B768E30ECAD397E99B27181DB9EB4836BE7DC009639DCF8D983806712C6F7002D28F70F07716ACEFCAFB46D8742A0FCCBC6E3F46C537234382BD86861A77C7569367E8008A350AB207B92A896B7C925351E4ECFAB48B19A0AF1E3CF6AC0E633D3E1E5269C3EA5251162196FDFDD4444AA7B4F0179F|B30DD6184E85A89077FE4666AF1D2073185490757A2266E0DD6F2A4225700A3928628974D82A7441////C009DD699F7A5A44AA3AE6C32DB1DABBC1C612AB82C4B86C48CF8AAAF2E4EBEABDCC23F8658CCDE8BD83687002CD964F46D7508D417BEA9195F75D071A77522E7AE0ED24EF05458CB989C43D927B4142E4D6342D2F96214432BFD4FC9B4723CF07E0698C6CAE46509F6CCD31EF2D66C73C488D9AFBD0F409CEF6015B8D934A151B4B47652383F1372F1B6DFBF087916711|B109AA6849F5DB96728F446CA46A530E6B22E20A7B2019E0DE132B4525747C3F2E178F74DF567839////C009DD699F7A5A47AD07E4EF3AB9FD83CEF509A583E7B94443CDB3ACF2CDCDE9A2DE2AD876|C37DD66D4286D99007FC4516AA6A27711C21E07D7C5167EED9685A4251770D4C2A10FE74AA2E744B////C308CF7C5AF1DE90035FB9E1ABB8FABFCEFB24AAAED3B06A62C3A484F2C5C4EA8CCD2ACA4B87C7C9BAAB487108C39A5E49D4609E4470F69195F75E091F75701477F2CF24EE294982928AD9099877424FF5C337143E9C0E493B80DDFDB15622F02EEB6D9D61967D5FAB50CD33D02543F63D4BBD90F9CBF62FCFFB355B8FB76F19174345600D8CCE1D210C6CF5CBB2|B37AAA654B81D992008A4614D91F52041D51947C79576A97AD1F2F3754047B4E5D17FF70A82A7C4D////C009DD699F7A5A47AD07E4EF3AB9FD83CEF509A583E7B94443CDB3ACF2CDCDE9A0D22AD876|C17DDC1D3B86AB9B078B3811DF675F0E1826900E0F5567E7AA6E5A425305083B5D668E70AD2B0B4C////C009DD699F7A5A44AA3AE6C32DB1DABBCDC303AB9DFDBA5A6BCF9ABBF1F5CDE89FE823F8658CCDE8B0A0417D3EE132A5927EAF6E4549C59BBAFA5B170F7F5F19A2608D78FFC04587B586DE22946C554EEAFE371E0896147C32BFD4F390552EEE28EA538561825EE9D954A35EEA7AA09D6B49EBF2C703F732FCF72A508C9066161A7346420D82E60F|CA7AD96843F2D7E605883517A41A53761A539078012266EED9692C3722747E3B29678E73AD5B0F4D////C009DD699F7A5A90D02688B301DE80A1988818C0DBE3CF3F5F96FA93B2A5F29FFDEE53A267CDA5F2E4F4440962EDF3D4E8D4589D4750D29B8FC2572B1278593E74CBF829C00846B4AB89FB0D9545694DCBEE3529379C0E49388CD0F0B97D2EDB13E77A9D6B8E5653AE6BC211E22F58C5315BBC93D4D1F50DCBF4096E8DBE57152F674F4F0083C80B22046FF9C2A6925230CD999278BEFC|C60EDF693CF7DD9307FF4661DC1F56731F5294080C511993DC185C46

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