Error : TypeError: '>' not supported between instances of 'int' and 'NoneType'

从报告的堆栈跟踪入手，在 _vendored/pydevd/_pydevd_bundle/pydevd_frame_utils.py 中跟踪 map_columns_to_line 和 _utf8_byte_offset_to_character_offset。使用提供的 Python 3.12 和 debugpy 上下文重现失败，然后确定触发它的输入并为其添加覆盖测试。当该情况下不再发生 TypeError 时，即视为完成。

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Environment data

• debugpy version: 1.8.1
• OS and version: Darwin Kernel Version 23.4.0 arm64
• Python version (& distribution if applicable, e.g. Anaconda): python3.12
• Using VS Code

Actual behavior

    self._cmd = py_db.cmd_factory.make_get_thread_stack_message(
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<project>/.venv/lib/python3.12/site-packages/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_net_command_factory_json.py", line 278, in make_get_thread_stack_message
    colno, endcolno = line_col_info.map_columns_to_line(line_text)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<project>/.venv/lib/python3.12/site-packages/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_frame_utils.py", line 101, in map_columns_to_line
    colno = _utf8_byte_offset_to_character_offset(original_line, self.colno)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<project>/.venv/lib/python3.12/site-packages/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_frame_utils.py", line 143, in _utf8_byte_offset_to_character_offset
    if byte_offset > offset:
       ^^^^^^^^^^^^^^^^^^^^
TypeError: '>' not supported between instances of 'int' and 'NoneType'