rich.traceback

class rich.traceback.Traceback(trace=None, width=100, extra_lines=3, theme=None, word_wrap=False, show_locals=False, indent_guides=True, locals_max_length=10, locals_max_string=80, suppress=(), max_frames=100)[source]

A Console renderable that renders a traceback.

Parameters

  • trace (Trace, optional) – A Trace object produced from extract. Defaults to None, which uses the last exception.

  • width (Optional[int], optional) – Number of characters used to traceback. Defaults to 100.

  • extra_lines (int, optional) – Additional lines of code to render. Defaults to 3.

  • theme (str, optional) – Override pygments theme used in traceback.

  • word_wrap (bool, optional) – Enable word wrapping of long lines. Defaults to False.

  • show_locals (bool, optional) – Enable display of local variables. Defaults to False.

  • indent_guides (bool, optional) – Enable indent guides in code and locals. Defaults to True.

  • locals_max_length (int, optional) – Maximum length of containers before abbreviating, or None for no abbreviation. Defaults to 10.

  • locals_max_string (int, optional) – Maximum length of string before truncating, or None to disable. Defaults to 80.

  • suppress (Sequence[Union[str, ModuleType]]) – Optional sequence of modules or paths to exclude from traceback.

  • max_frames (int) – Maximum number of frames to show in a traceback, 0 for no maximum. Defaults to 100.

classmethod extract(exc_type, exc_value, traceback, show_locals=False, locals_max_length=10, locals_max_string=80)[source]

Extract traceback information.

Parameters

  • exc_type (Type[BaseException]) – Exception type.

  • exc_value (BaseException) – Exception value.

  • traceback (TracebackType) – Python Traceback object.

  • show_locals (bool, optional) – Enable display of local variables. Defaults to False.

  • locals_max_length (int, optional) – Maximum length of containers before abbreviating, or None for no abbreviation. Defaults to 10.

  • locals_max_string (int, optional) – Maximum length of string before truncating, or None to disable. Defaults to 80.

Returns

A Trace instance which you can use to construct a Traceback.

Return type

Trace

classmethod from_exception(exc_type, exc_value, traceback, width=100, extra_lines=3, theme=None, word_wrap=False, show_locals=False, indent_guides=True, locals_max_length=10, locals_max_string=80, suppress=(), max_frames=100)[source]

Create a traceback from exception info

Parameters

  • exc_type (Type[BaseException]) – Exception type.

  • exc_value (BaseException) – Exception value.

  • traceback (TracebackType) – Python Traceback object.

  • width (Optional[int], optional) – Number of characters used to traceback. Defaults to 100.

  • extra_lines (int, optional) – Additional lines of code to render. Defaults to 3.

  • theme (str, optional) – Override pygments theme used in traceback.

  • word_wrap (bool, optional) – Enable word wrapping of long lines. Defaults to False.

  • show_locals (bool, optional) – Enable display of local variables. Defaults to False.

  • indent_guides (bool, optional) – Enable indent guides in code and locals. Defaults to True.

  • locals_max_length (int, optional) – Maximum length of containers before abbreviating, or None for no abbreviation. Defaults to 10.

  • locals_max_string (int, optional) – Maximum length of string before truncating, or None to disable. Defaults to 80.

  • suppress (Iterable[Union[str, ModuleType]]) – Optional sequence of modules or paths to exclude from traceback.

  • max_frames (int) – Maximum number of frames to show in a traceback, 0 for no maximum. Defaults to 100.

Returns

A Traceback instance that may be printed.

Return type

Traceback

rich.traceback.install(*, console=None, width=100, extra_lines=3, theme=None, word_wrap=False, show_locals=False, indent_guides=True, suppress=(), max_frames=100)[source]

Install a rich traceback handler.

Once installed, any tracebacks will be printed with syntax highlighting and rich formatting.

Parameters

  • console (Optional[Console], optional) – Console to write exception to. Default uses internal Console instance.

  • width (Optional[int], optional) – Width (in characters) of traceback. Defaults to 100.

  • extra_lines (int, optional) – Extra lines of code. Defaults to 3.

  • theme (Optional[str], optional) – Pygments theme to use in traceback. Defaults to None which will pick a theme appropriate for the platform.

  • word_wrap (bool, optional) – Enable word wrapping of long lines. Defaults to False.

  • show_locals (bool, optional) – Enable display of local variables. Defaults to False.

  • indent_guides (bool, optional) – Enable indent guides in code and locals. Defaults to True.

  • suppress (Sequence[Union[str, ModuleType]]) – Optional sequence of modules or paths to exclude from traceback.

  • max_frames (int) –

Returns

The previous exception handler that was replaced.

Return type

Callable