Bug report

Consider the code below:

d = { "ó": { "á": { "í": { "theta": 1 } } } } try: result = d["ó"]["á"]["í"]["beta"] except: import traceback;traceback.print_exc() 

The output provided is:

Traceback (most recent call last): File "W:\pydev.debugger\check\snippet2.py", line 12, in <module> result = d["ó"]["á"]["í"]["beta"] ~~~~~~~~~~~~~~~~~~~^^^^^^^^ KeyError: 'beta' 

Notice that for each additional unicode char, an additional `~' is added.

This seems to happen because when computing the anchors in traceback._extract_caret_anchors_from_line_segment the columns from the ast nodes generated in ast.parse seem to be related to bytes and not actual chars.

Your environment

• CPython versions tested on: 3.11.0
• Operating system and architecture: Windows 10

• PR: gh-99103: Normalize specialized traceback anchors against the current line #99145

• PR: [3.11] gh-99103: Normalize specialized traceback anchors against the current line #99423