Auto-convert >>> into ...

[crusaderky]

blackdoc currently crashes on

.. ::

    >>> @d
    >>> def f(): pass

It could automatically replace the second >>> with ...

[keewis]

That's not valid doctest, is it? My impression was that doctest is simply code copied from a standard CPython interpreter session with the default prompt and a lone decorator would be a syntax error there (you would always get at least one continuation line, though).

The way the implementation of the doctest format works right now is that it reads lines one-by-one (making sure doctest lines (>>> ) and continuation lines (... ) are grouped together), strips the prompts, applies black and then adds back the prompts and indentation.

Considering that, I don't think adding this is easy since the tool would need to actually parse the code; right now it delegates that entirely to black. Instead, I think improving the error message would be easier (<line number missing in source> is not really helpful).

[KelSolaar]

That doctest is indeed invalid!