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

See original GitHub issue

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.

Issue Analytics

State:
Created 2 years ago
Reactions:31
Comments:15 (2 by maintainers)

Top GitHub Comments

22reactions

dgealowcommented, Feb 28, 2022

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

11reactions

olliemathcommented, Feb 25, 2022

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

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