Python 审计调整分录异常预警（频繁调整=盈余管理信号）

{"type":"doc","content":[{"type":"paragraph","attrs":{"id":"f08f01b3-033e-41c1-9340-5ed943dbdbb1","textAlign":"inherit","indent":0,"color":null,"background":null,"isHoverDragHandle":false},"content":[{"type":"text","text":"问题"},{"type":"hardBreak","attrs":{"id":"6ac38eb7-a9f4-48bd-aa2e-a89561180c34"}},{"type":"text","text":"调整分录是审计的\"心电图\"。有些公司期末突击调账、用重分类掩盖错报。手工翻分录难发现模式，用 Python 自动标出三类异常信号。"}]},{"type":"paragraph","attrs":{"id":"522e96f7-4bcf-46d2-b651-6ffee3a83cb0","textAlign":"inherit","indent":0,"color":null,"background":null,"isHoverDragHandle":false},"content":[{"type":"text","text":"示例代码"}]},{"type":"paragraph","attrs":{"id":"45c8547b-8f29-4b4d-aaec-bc60e477182a","textAlign":"inherit","indent":0,"color":null,"background":null,"isHoverDragHandle":false},"content":[{"type":"text","marks":[{"type":"textStyle","attrs":{"color":"","background":""}}],"text":"plaintext"}]},{"type":"codeBlock","attrs":{"id":"09fcd1bc-aca3-4054-b2e5-84b4be4464d8","language":"javascript","theme":"atom-one-dark","runtimes":0,"isHoverDragHandle":false,"key":"","languageByAi":"javascript"},"content":[{"type":"text","text":"from datetime import date\nimport pandas as pd\n\ndef flag_adjustments(entries, year_end, freq_thr=10, window_days=30, ye_ratio=0.6, reclass_ratio=0.5):\n n = len(entries)\n start = year_end - pd.Timedelta(days=window_days)\n ye = [e for e in entries if start < e[\"date\"] <= year_end]\n reclass = [e for e in entries if e.get(\"type\") == \"reclass\"]\n alerts = []\n if n >= freq_thr:\n alerts.append((\"高频调整\", n))\n if n and len(ye) / n >= ye_ratio:\n alerts.append((\"期末集中调整\", len(ye)))\n if n and len(reclass) / n >= reclass_ratio:\n alerts.append((\"重分类占比高\", len(reclass)))\n return alerts\n\nentries = [\n {\"date\": date(2025,12,20), \"type\": \"accrual\"},\n {\"date\": date(2025,12,28), \"type\": \"reclass\"},\n {\"date\": date(2026,1,3), \"type\": \"reclass\"},\n]\nprint(flag_adjustments(entries, date(2025,12,31)))\n"}]},{"type":"paragraph","attrs":{"id":"ebb2d474-7a35-4937-bbf4-75dc0dca2b66","textAlign":"inherit","indent":0,"color":null,"background":null,"isHoverDragHandle":false},"content":[{"type":"text","text":"关键点"}]},{"type":"bulletList","attrs":{"id":"2d218080-0734-4fe7-828f-2861fe3e3234","isHoverDragHandle":false},"content":[{"type":"listItem","attrs":{"id":"938c7f63-d080-4597-b2bc-153771693821"},"content":[{"type":"paragraph","attrs":{"id":"44de762a-9bf2-4a2d-b029-9586a8114f14","textAlign":"inherit","indent":0,"color":null,"background":null,"isHoverDragHandle":false},"content":[{"type":"text","text":"三类信号：调整笔数异常多、调整集中在期末 30 天、重分类占比超 50%。"}]}]},{"type":"listItem","attrs":{"id":"36ed8d3d-5efa-49d6-b0b0-57c18614745f"},"content":[{"type":"paragraph","attrs":{"id":"1bcffa9c-d10f-48bc-b3bf-8c7d8b9e93fd","textAlign":"inherit","indent":0,"color":null,"background":null,"isHoverDragHandle":false},"content":[{"type":"text","text":"重分类本身中性，但\"用重分类掩盖错报\"是经典手法，占比高要追实质。"}]}]},{"type":"listItem","attrs":{"id":"14fb2f86-74ae-4cb9-8f27-6e98cdc16efe"},"content":[{"type":"paragraph","attrs":{"id":"e004d8c3-4884-4a87-8c5f-05e4272c0f91","textAlign":"inherit","indent":0,"color":null,"background":null,"isHoverDragHandle":false},"content":[{"type":"text","text":"这些是红旗不是结论，标出后看具体分录实质，别直接判舞弊。"}]}]}]},{"type":"paragraph","attrs":{"id":"eb30cc29-f43a-48a7-9de8-bedb4f12ee2e","textAlign":"inherit","indent":0,"color":null,"background":null,"isHoverDragHandle":false},"content":[{"type":"text","text":"小结"},{"type":"hardBreak","attrs":{"id":"b9ec283d-f42b-409b-a3cd-e672c4fe36fc"}},{"type":"text","text":"调整分录是审计的心电图，频繁、期末集中、重分类多是盈余管理的前兆信号。"}]},{"type":"horizontalRule","attrs":{"id":"0c406ea1-0f87-42b2-8aa0-2d29dc2fda13","isHoverDragHandle":false}},{"type":"paragraph","attrs":{"id":"2ae2a106-6f5b-439d-80b5-bde276cdffc0","textAlign":"inherit","indent":0,"color":null,"background":null,"isHoverDragHandle":false},"content":[{"type":"text","text":"你遇过\"期末突击调账\"最离谱的是哪种？评论区聊。"}]},{"type":"paragraph","attrs":{"id":"8f251ef8-b0f0-4d7d-a208-d26fe7018c00","textAlign":"inherit","indent":0,"color":null,"background":null,"isHoverDragHandle":false},"content":[{"type":"text","text":"如果有用，点赞收藏关注，留下审计难题。下期预告：关键审计事项自动提取与预警。"}]},{"type":"paragraph","attrs":{"id":"e372c1ed-140e-4dc8-9d75-efd41bca80b8","textAlign":"inherit","indent":0,"color":null,"background":null,"isHoverDragHandle":false},"content":[{"type":"text","text":"会计师事务所的一名注册会计师"}]}]}