bug#32042: 26.1; python.el with ipython prompt leads to superfluous interactive shell output

[Noam Postavsky <npostavs@gmail.com>]

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From: jaan.altosaar@gmail.com
To: bug-gnu-emacs@gnu.org
Subject: Re: bug#32042: 26.1; python.el with ipython prompt leads to superfluous interactive shell output
Date: Fri, 6 Jul 2018 12:21:52 -0700 (PDT)
Message-ID: <291b6c7e-1e95-4ee1-bab7-4d8db52c0977@googlegroups.com>

There was no change; I still see the broken output in the original post...

```File "<ipython-input-1-57ce0cd600e5>", line 1, in <module>
    import codecs, os;__pyfile = codecs.open('''/var/folders/qr/s_h2rhqj6kdg8qrj0zw2scnw0000gn/T/pyLbk6Vh''', encoding='''utf-8''')
```

I tried:

Disabling system integrity protection (booting into OS X High Sierra recovery mode and running `csrutil disable`), then 

```
cd /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload 
sudo mv readline.so readline.so.bak
```

and the same for the anaconda readline:

```
cd /usr/local/anaconda3/lib/python3.6/lib-dynload
mv readline.cpython-36m-darwin.so readline.cpython-36m-darwin.so.bak
```

And installing gnureadline.

Still getting the same broken output.
forwarding to list
Any other ideas?

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Try in a python shell:

    print (readline.__doc__)
    print (readline.__file__)

The first to confirm that libedit readline is still being loaded, the
second to hopefully give some kind of hint where it's coming from.