Hide frame from tracebacks

[willmcgugan]

Sometimes it is useful to completely omit a frame from a traceback. Suggest a local variable with a name like _rich_traceback_omit

[olivierphi]

Not sure I understand correctly, sorry... 😅

Do you mean something like this?

@dataclass
class Frame:
    filename: str
    lineno: int
    name: str
    line: str = ""
    locals: Optional[Dict[str, pretty.Node]] = None
    _rich_traceback_omit: bool = False # <-- new opt-in allowing to exclude that frame

...which would be powered behind the scenes by something like the possibility to simply add _rich_traceback_omit = True to the locals of any Python object.
...and that we would detect when we create the Frame object, as we have frame_summary.f_locals at this point?

[willmcgugan]

Essentially that. The idea is that Textual can remove things like descriptors from the traceback, so the user doesn't see noise from the library code.

We do something similar to omit library code (see suppress)

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