More programmatic access to error locations in the traceback module
還沒有人認領這個 Issue。
評估
研究方向
從 Lib/traceback.py 中的 format_frame_summary() 開始，這裡描述了現有的細粒度 traceback 位置邏輯。確定如何分離該邏輯，以便在不解析回傳字串的情況下，為自訂 traceback 格式化提供欄號。完成的標準是呼叫端可以透過程式存取這些位置，同時保留現有的 traceback 輸出。
由索引模型根據 Issue 內容生成。
描述
Feature or enhancement
I'd like for the traceback module to have a more programmatic way to access the fine-grained error locations that are printed in tracebacks starting in Python 3.11 (PEP 657).
Pitch
The new fine-grained error information in tracebacks is nice. But I'd like to be able to write a custom traceback printer that uses this information and prints it in a different way (I'd like to highlight the characters in the lines of source rather than having ASCII characters under them).
The logic for getting the locations of the printed fine-grained information is present in the traceback module, but unfortunately, it's only present inside of the format_frame_summary() method, which returns a string. That means that to access the information, I have to parse the string.
It would be convenient if the logic in that method were separated out into a separate method that returned the column numbers, so that it could be called from a superclass. I would be fine if this method is private, so that it wouldn't strictly speaking add a new API or hard-code the existing traceback information into the API.
Previous discussion
I haven't followed the discussions on PEP 657 so I don't know if this has been discussed previously. I don't see any mention of the traceback module in the PEP.
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