IPython 8.1.0 claims to be compatible with Python 3.8, but isn't #13554

arekfu · 2022-02-25T16:29:30Z

Steps to reproduce:

$ python --version
Python 3.8.10
$ pip install ipython
$ ipython
Traceback (most recent call last):
  File "/path/to/venv/bin/ipython", line 8, in <module>
    sys.exit(start_ipython())
  File "/path/to/venv/lib/python3.8/site-packages/IPython/__init__.py", line 123, in start_ipython
    return launch_new_instance(argv=argv, **kwargs)
  File "/path/to/venv/lib/python3.8/site-packages/traitlets/config/application.py", line 845, in launch_instance
    app.initialize(argv)
  File "/path/to/venv/lib/python3.8/site-packages/traitlets/config/application.py", line 88, in inner
    return method(app, *args, **kwargs)
  File "/path/to/venv/lib/python3.8/site-packages/IPython/terminal/ipapp.py", line 279, in initialize
    self.init_shell()
  File "/path/to/venv/lib/python3.8/site-packages/IPython/terminal/ipapp.py", line 293, in init_shell
    self.shell = self.interactive_shell_class.instance(parent=self,
  File "/path/to/venv/lib/python3.8/site-packages/traitlets/config/configurable.py", line 540, in instance
    inst = cls(*args, **kwargs)
  File "/path/to/venv/lib/python3.8/site-packages/IPython/terminal/interactiveshell.py", line 619, in __init__
    super(TerminalInteractiveShell, self).__init__(*args, **kwargs)
  File "/path/to/venv/lib/python3.8/site-packages/IPython/core/interactiveshell.py", line 529, in __init__
    self.init_virtualenv()
  File "/path/to/venv/lib/python3.8/site-packages/IPython/core/interactiveshell.py", line 788, in init_virtualenv
    new_path = p.readlink()
AttributeError: 'PosixPath' object has no attribute 'readlink'

If you suspect this is an IPython 8.1.0 bug, please report it at:
    https://github.com/ipython/ipython/issues
or send an email to the mailing list at ipython-dev@python.org

You can print a more detailed traceback right now with "%tb", or use "%debug"
to interactively debug it.

Extra-detailed tracebacks for bug-reporting purposes can be enabled via:
    c.Application.verbose_crash=True

PosixPath.readlink() was introduced in Python 3.9.

Thank you for looking into this.

The text was updated successfully, but these errors were encountered:

arekfu · 2022-02-25T16:32:25Z

$ python -c "import IPython; print(IPython.sys_info())"
{'commit_hash': 'bd470fe8c',
 'commit_source': 'installation',
 'default_encoding': 'utf-8',
 'ipython_path': '/path/to/venv/lib/python3.8/site-packages/IPython',
 'ipython_version': '8.1.0',
 'os_name': 'posix',
 'platform': 'Linux-5.4.0-81-generic-x86_64-with-glibc2.29',
 'sys_executable': '/path/to/venv/bin/python',
 'sys_platform': 'linux',
 'sys_version': '3.8.10 (default, Nov 26 2021, 20:14:08) \n[GCC 9.3.0]'}

Mec-iS · 2022-02-25T17:43:43Z

same problem here:

{'commit_hash': 'bd470fe8c',
 'commit_source': 'installation',
 'default_encoding': 'utf-8',
 'ipython_path': '.venv/lib/python3.8/site-packages/IPython',
 'ipython_version': '8.1.0',
 'os_name': 'posix',
 'platform': 'Linux-5.13.0-30-generic-x86_64-with-glibc2.29',
 'sys_executable': '/home/lorenzo/code/.venv/bin/python',
 'sys_platform': 'linux',
 'sys_version': '3.8.10 (default, Nov 26 2021, 20:14:08) \n[GCC 9.3.0]'}

olliemath · 2022-02-25T17:47:47Z

Same same - guessing this is the offending line:

ipython/IPython/core/interactiveshell.py

Line 788 in 6d40fd8

new_path = p.readlink()

You might be able to fix this by using os.readlink .. which happens to be how pathlib implements this function anyway
https://github.com/python/cpython/blob/main/Lib/pathlib.py#L1073

olliemath · 2022-02-25T18:00:06Z

Can confirm

sed -i 's/p.readlink()/p._from_parts(os.readlink(p,))/g' IPython/core/interactiveshell.py

within my local venv fixed this for me

adamdoupe · 2022-02-26T06:13:31Z

I can also confirm this bug on Ubuntu 20.04.

You can reproduce by installing ipython in a venv (which is how I triggered it).

cnobile2012 · 2022-02-26T22:34:30Z

I'm also getting this bug on ubuntu 20.04 on Python 3.8.10.
I also get the exact tracback.

barlaensdoonn · 2022-02-26T23:23:12Z

Can confirm
sed -i 's/p.readlink()/p._from_parts(os.readlink(p,))/g' IPython/core/interactiveshell.py
within my local venv fixed this for me

worked for me in venv on Ubuntu 20.04, python 3.8.10. thx @olliemath!!

for reference for anyone stuck here:
the above command needs to know where to find the IPython package directory, which should be in the site-packages directory for the venv in which it was installed.

to find this path, i ran this from within the activated venv (found in this very helpful SO post):

python3 -c 'import sysconfig; print(sysconfig.get_paths()["purelib"])

this output the absolute path to the venv's python site-packages dir, where IPython lives. I updated @olliemath 's command with the full path, and that fixed the issue:

sed -i 's/p.readlink()/p._from_parts(os.readlink(p,))/g' ~/gitbucket/infinityGAN/gainf/lib/python3.8/site-packages/IPython/core/interactiveshell.py

ipython 8.1.0 causes the documentation build to fail because it uses features from python 3.9 Explicitly disallow pip to install this version. fixes numpygh-21126 xref ipython/ipython#13554

MrMino · 2022-02-27T18:39:08Z

From what I can see, this has been fixed in #13557. @Carreau already merged a What's-New for 8.1.1, so it should get released soon.

deepansh96 · 2022-02-28T10:03:16Z

For MacOS users, sed -i command might not work for you. reason

What I did is I manually went to this path (note - I'm using a venv).
venv/lib/python3.8/site-packages/IPython/core/interactiveshell.py

And I changed the line p.readlink() to p._from_parts(os.readlink(p,)) and everything started working

IVEWOR · 2022-02-28T13:47:53Z

For MacOS users, sed -i command might not work for you. reason

What I did is I manually went to this path (note - I'm using a venv). venv/lib/python3.8/site-packages/IPython/core/interactiveshell.py

And I changed the line p.readlink() to p._from_parts(os.readlink(p,)) and everything started working

Working in linux as well.

jotathebest · 2022-02-28T13:55:52Z

sed -i 's/p.readlink()/p._from_parts(os.readlink(p,))/g' ~/gitbucket/infinityGAN/gainf/lib/python3.8/site-packages/IPython/core/interactiveshell.py

this worked for me, thanks!

Carreau · 2022-02-28T16:13:21Z

Computer with all publishing credential died, it may take me a few days to re-setup everything so don't expect a 8.1.1 soon unless someone else gets to it.

…

On Mon, 28 Feb 2022 at 14:56, Jose Reyes Garcia Delgado < ***@***.***> wrote: sed -i 's/p.readlink()/p._from_parts(os.readlink(p,))/g' ~/gitbucket/infinityGAN/gainf/lib/python3.8/site-packages/IPython/core/interactiveshell.py this worked for me, thanks! — Reply to this email directly, view it on GitHub <#13554 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACR5T3DXTIRI5DHKNNDVBDU5N5HVANCNFSM5PKWZGMQ> . You are receiving this because you were mentioned.Message ID: ***@***.***>

dgealow · 2022-02-28T16:56:10Z

For anyone who wants a workaround for the next few days but doesn't want to muck around with source files and/or doesn't care about whatever other features/fixes 8.1 added, you can just downgrade to the previous version: pip install ipython==8.0.1

tiffanyb · 2022-03-01T04:08:12Z

confirmed bug if one creates a virtual environment and pip install ipython. ipython still works fine.

ipython 8.1.0 causes the documentation build to fail because it uses features from python 3.9 Explicitly disallow pip to install this version. fixes numpygh-21126 xref ipython/ipython#13554

- structure_optimizer.py is fixed - requirements.txt file is updated to include the upgraded version of ipython which caused a crash in JetBrains IDE: https://youtrack.jetbrains.com/issue/PY-53261, ipython/ipython#13554 - new test for structure_optimizer.py is added but commented out, because it's a very slow test which is already included into test_cli.py, but still can be useful for future debugging - docker file updated

SonyaEick · 2022-04-10T03:38:56Z

For MacOS users, sed -i command might not work for you. reason

What I did is I manually went to this path (note - I'm using a venv). venv/lib/python3.8/site-packages/IPython/core/interactiveshell.py

And I changed the line p.readlink() to p._from_parts(os.readlink(p,)) and everything started working

This was the one for me! Thank you for sharing!

ipython 8.1.0 causes the documentation build to fail because it uses features from python 3.9 Explicitly disallow pip to install this version. fixes numpygh-21126 xref ipython/ipython#13554

Saransh-cpp mentioned this issue Feb 26, 2022

Rename tortuosity to transport efficiency pybamm-team/PyBaMM#1950

Merged

8 tasks

This was referenced Feb 26, 2022

Fix for symlink resolving #13537

Merged

Ipython fails to start in bin folder due to Pathlib changes in interactiveshell.py #13177

Closed

ipython 8.1.0 conda-forge/ipython-feedstock#166

Closed

ipython v8.1.0 conda-forge/ipython-feedstock#167

Closed

mayeut mentioned this issue Feb 27, 2022

Sphinx build is broken? numpy/numpy#21126

Closed

mayeut mentioned this issue Feb 27, 2022

BLD,DOC: skip broken ipython 8.1.0 numpy/numpy#21127

Merged

MrMino added bug core labels Feb 27, 2022

MrMino added this to the 8.1.1 milestone Feb 27, 2022

dgealow mentioned this issue Feb 28, 2022

spacemacs/python-execute-file still uses default interpreter after switching python environments syl20bnr/spacemacs#8244

Open

dukecat0 mentioned this issue Feb 28, 2022

Update package metadata pypa/pipx#817

Merged

1 task

ofek mentioned this issue Feb 28, 2022

Retry flaky tests pypa/pipx#822

Closed

tswast mentioned this issue Mar 1, 2022

deps: add "extra" for IPython, exclude bad IPython release googleapis/python-bigquery#1151

Merged

4 tasks

fdemmer mentioned this issue Mar 2, 2022

cannot integrate Django shell 4.0.2 with ipython 8.1.0 #13563

Closed

f-osorio mentioned this issue Mar 2, 2022

installation: MarkupSafe 2.1 problem inveniosoftware/invenio-app-rdm#1343

Open

charris mentioned this issue Mar 2, 2022

BLD,DOC: skip broken ipython 8.1.0 numpy/numpy#21137

Merged

Carreau closed this as completed Mar 3, 2022

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

IPython 8.1.0 claims to be compatible with Python 3.8, but isn't #13554

IPython 8.1.0 claims to be compatible with Python 3.8, but isn't #13554

arekfu commented Feb 25, 2022

arekfu commented Feb 25, 2022

Mec-iS commented Feb 25, 2022

olliemath commented Feb 25, 2022 •

edited

olliemath commented Feb 25, 2022 •

edited

adamdoupe commented Feb 26, 2022

cnobile2012 commented Feb 26, 2022

barlaensdoonn commented Feb 26, 2022

MrMino commented Feb 27, 2022

deepansh96 commented Feb 28, 2022

IVEWOR commented Feb 28, 2022

jotathebest commented Feb 28, 2022

Carreau commented Feb 28, 2022 via email

dgealow commented Feb 28, 2022

tiffanyb commented Mar 1, 2022

SonyaEick commented Apr 10, 2022

IPython 8.1.0 claims to be compatible with Python 3.8, but isn't #13554

IPython 8.1.0 claims to be compatible with Python 3.8, but isn't #13554

Comments

arekfu commented Feb 25, 2022

arekfu commented Feb 25, 2022

Mec-iS commented Feb 25, 2022

olliemath commented Feb 25, 2022 • edited

olliemath commented Feb 25, 2022 • edited

adamdoupe commented Feb 26, 2022

cnobile2012 commented Feb 26, 2022

barlaensdoonn commented Feb 26, 2022

MrMino commented Feb 27, 2022

deepansh96 commented Feb 28, 2022

IVEWOR commented Feb 28, 2022

jotathebest commented Feb 28, 2022

Carreau commented Feb 28, 2022 via email

dgealow commented Feb 28, 2022

tiffanyb commented Mar 1, 2022

SonyaEick commented Apr 10, 2022

olliemath commented Feb 25, 2022 •

edited

olliemath commented Feb 25, 2022 •

edited