reprs no longer return anything in the notebook

[TomAugspurger]

In #14904 I added an NDFrame._ipython_display_, which handles publishing what the user has configured (html, table schema, latex, text).

An unintended consequence of that, is that our DataFrame and Series reprs invoked by the notebook no longer return anything, so there's no Out[x] and nothing is stored in the Out dictionary. Here's a comparison notebook.

cc @rgbkrk

For the jupyter folks (maybe @Carreau if you have time), is there any way around this? Does using _ipython_display_ mean you can't have a "real output" from a cell?

[Carreau]

For the jupyter folks (maybe @Carreau if you have time), is there any way around this? Does using ipython_display mean you can't have a "real output" from a cell?

Hum, I don't know. That's an interesting question. I'm unsure if there is a way to have a _repr_ that just compute all mime bundles and return this.

[TomAugspurger]

I can raise an issue on the Jupyter side (IPython repo probably?) if necessary.

[Carreau]

Sure, that would be great !

[TomAugspurger]

Since _repr_table_schema_ is the only one who really needs _ipython_display_, we could monkeypatch the current _ipython_display_ onto NDFrame when the user sets pd.options.display.html.table_schema to True, and remove it when they set it to False (the default).

The default is False, so users who don't explicitly set that config value will get the Out[x] as before. Not a long-term solution, but perhaps good enough for now?

[rgbkrk]

Yeah I definitely didn't intend for us to break previous workflows. The monkey patching seems ok for now. It's too bad we don't have ipython/ipython#10090.

[TomAugspurger]

Closed by ipython/ipython#10491