[IPython-dev] [jupyter] Re: IPython 7.0.0b1 released on PyPI. Thanks Paul !

[Matthias Bussonnier]

> Wow, async is big!

Just 2 years in the making no big deal :-) Don't look at the code we're
doing some crazy things.

> Has then been tested with magic cells that call into or embed other
languages, like Cython, R, f2py, Julia?

No, not tested, but in general nothing working before _should_ break – but
hey, that's why we do a beta.
Remember that magics are "just" some function call:
get_ipython().magic(magic_name, first_line, rest_of_cell)

There are some limitation:
 - If the magic embeds sync code, there should be no issues.
 - If the magics embeds async code or exec() things, or call-back into
IPython it may break.

In most case magics will be blocking, that is to say they'll take over the
event loop like any other sync-functions. We haven't fleshed out if we want
"async magics". We'll likely go with "all magics are async", and just
happen to block sometimes.

For example %%timeit with `await function()`  does not work, and will raise
a RuntimeError, but classical `%%timeit` with sync function should work.

>  I would suggest producing a better error message if IPython 7 is run
> with prompt-toolkit 1. Right now, it gives `ImportError: No module
> named 'prompt_toolkit.formatted_text'`

Hum, make some sens, but we generally don't do that for other libraries if
we're incompatible. If someone want to send a Pull-Request, that's an easy
first time contribution.

> Also, the SymPy tests all still pass with IPython 7, so everything is
> good there.

Awesome ! Thanks for testing !
-- 
Matthias



On Wed, 12 Sep 2018 at 00:30, Aaron Meurer <asmeurer at gmail.com> wrote:

> I would suggest producing a better error message if IPython 7 is run
> with prompt-toolkit 1. Right now, it gives `ImportError: No module
> named 'prompt_toolkit.formatted_text'`
>
> Also, the SymPy tests all still pass with IPython 7, so everything is
> good there.
>
> Aaron Meurer
>
> On Tue, Sep 11, 2018 at 3:12 PM, Denis Akhiyarov
> <denis.akhiyarov at gmail.com> wrote:
> > Wow, async is big! Has then been tested with magic cells that call into
> or
> > embed other languages, like Cython, R, f2py, Julia?
> >
> >
> > On Tue, Sep 11, 2018, 3:50 PM Matthias Bussonnier
> > <bussonniermatthias at gmail.com> wrote:
> >>
> >> Hi all,
> >>
> >> Huge thanks to Paul Ivanov for releasing IPython 7.0.0b1 !
> >> Send love his way.
> >>
> >> TL:DR;
> >> - Read and complain about Changelog
> >> https://ipython.readthedocs.io/en/latest/whatsnew/version7.html
> >> - it is only on PyPI: pip install ipython --pre
> >> - corresponding version of IPykernel that enable some features is _not
> out
> >> yet_.
> >> - biggest changes are: async-Repl/Prompt-toolkit-2/new-input-transformer
> >> - It drops Python support for 3.3 and 3.4
> >>
> >> Longer version.
> >>
> >> We've been working hard on getting fancy new features to IPython (and
> >> ipykernel), so we are please to have the beta1 of IPython 7.
> >>
> >> There are some major change in the internals, please test and contribute
> >> update to the docs and what's new[1] when you can. Even just opening a
> issue
> >> to say that something is not clear/surprising/missing-link/you love
> >> us/etc... is helpful.
> >>
> >>  - I'm not sure how to make a prerelease on conda-forge, thus this is
> only
> >> available on PyPI with pip, installable by passing the --pre flag. If
> you
> >> know how to do that on conda-forge, help welcommed.
> >>
> >> - The new Async REPL in the notebook (and other frontends) will require
> >> IPykernel 5.0 to be release. Right now it works only in plain terminal
> >> IPython. We'll do a beta soon, but sleep is needed before that. see [1]
> >>
> >> - Update to PTK2. see [1]
> >>
> >> - If you want to help in anyway, have for example reading/writing skills
> >> for the 7.0 blog post announce, or just want to +1 on an issue
> subscribe to
> >> the 7.0 meta issue [2].
> >>
> >> - Tell you friends to look at [1]
> >>
> >> - It is still **beta** that is to say changes still possible. We'll do a
> >> Rc in a week or so.
> >>
> >> - Have fun.
> >>
> >> Much love from the IPython team. An much love to any contributors and
> >> users that made this possible.
> >> --
> >> Matthias
> >>
> >> 1: https://ipython.readthedocs.io/en/latest/whatsnew/version7.html
> >> 2: https://github.com/ipython/ipython/issues/11297
> >> _______________________________________________
> >> IPython-dev mailing list
> >> IPython-dev at python.org
> >> https://mail.python.org/mailman/listinfo/ipython-dev
> >
> >
> > _______________________________________________
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> >
>
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