Deprecated use of IPython.display.set_matplotlib_formats

[ivirshup]

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Found while investigating #1477.

scanpy.set_figure_parms detects whether we're in an IPython session (or at least tries to #1841), and sets the default output format. The way it sets the format is deprecated, as it looks like the matplotlib_inline backend has moved to a separate package.

The new way to call this is:

            import matplotlib_inline.backend_inline

            if isinstance(ipython_format, str):
                ipython_format = [ipython_format]
            matplotlib_inline.backend_inline.set_matplotlib_formats(*ipython_format)

It may take some investigation to figure out how to do this in a backwards compatible way.

I would also note the current backend format that we are using ("png2x") is undocumented. It is equivalent to the documented format "retina".

[Orangon]

Yes! I solve my problem in this way! Thanks!

[Shaun-Regenbaum]

I am also seeing this

[flying-sheep]

Damn, we should have fixed this immediately. It’ll be fixed with #3499, for now workarounds:

1. downgrade IPython to 8.x

2. import IPython.display
   from matplotlib_inline.backend_inline import set_matplotlib_formats
   IPython.display.set_matplotlib_formats = set_matplotlib_formats