Ipython: crash error

[sataliulan]

In [3]: nn.relu
Traceback (most recent call last):
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/IPython/terminal/ptutils.py", line 113, in get_completions
yield from self._get_completions(body, offset, cursor_position, self.ipy_completer)
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/IPython/terminal/ptutils.py", line 129, in _get_completions
for c in completions:
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/IPython/core/completer.py", line 438, in _deduplicate_completions
completions = list(completions)
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/IPython/core/completer.py", line 1818, in completions
for c in self._completions(text, offset, _timeout=self.jedi_compute_type_timeout/1000):
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/IPython/core/completer.py", line 1862, in _completions
full_text=full_text, cursor_line=cursor_line, cursor_pos=cursor_column)
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/IPython/core/completer.py", line 2030, in _complete
cursor_pos, cursor_line, full_text)
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/IPython/core/completer.py", line 1374, in _jedi_matches
text[:offset], namespaces, column=cursor_column, line=cursor_line + 1)
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/jedi/api/__init__.py", line 726, in __init__
project=Project(Path.cwd()), **kwds)
TypeError: __init__() got an unexpected keyword argument 'column'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/hcl/miniconda3/envs/pytorch/bin/ipython", line 8, in
sys.exit(start_ipython())
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/IPython/__init__.py", line 126, in start_ipython
return launch_new_instance(argv=argv, *kwargs)
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/traitlets/config/application.py", line 845, in launch_instance
app.start()
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/IPython/terminal/ipapp.py", line 356, in start
self.shell.mainloop()
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/IPython/terminal/interactiveshell.py", line 564, in mainloop
self.interact()
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/IPython/terminal/interactiveshell.py", line 547, in interact
code = self.prompt_for_code()
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/IPython/terminal/interactiveshell.py", line 475, in prompt_for_code
*self._extra_prompt_options())
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/prompt_toolkit/shortcuts/prompt.py", line 1013, in prompt
return self.app.run(set_exception_handler=set_exception_handler)
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/prompt_toolkit/application/application.py", line 817, in run
self.run_async(pre_run=pre_run, set_exception_handler=set_exception_handler)
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/asyncio/base_events.py", line 584, in run_until_complete
return future.result()
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/prompt_toolkit/application/application.py", line 783, in run_async
return await _run_async2()
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/prompt_toolkit/application/application.py", line 771, in _run_async2
await self.cancel_and_wait_for_background_tasks()
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/prompt_toolkit/application/application.py", line 872, in cancel_and_wait_for_background_tasks
await task
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/prompt_toolkit/buffer.py", line 1854, in new_coroutine
await coroutine(a, *kw)
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/prompt_toolkit/buffer.py", line 1684, in async_completer
document, complete_event
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/prompt_toolkit/completion/base.py", line 270, in get_completions_async
document, complete_event
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/prompt_toolkit/completion/base.py", line 196, in get_completions_async
for item in self.get_completions(document, complete_event):
File "/home/hcl/miniconda3/envs/pytorch/lib/python3.7/site-packages/IPython/terminal/ptutils.py", line 116, in get_completions
exc_type, exc_value, exc_tb = sys.exc_info()
NameError: name 'sys' is not defined

If you suspect this is an IPython 7.19.0 bug, please report it at:
https://github.com/ipython/ipython/issues
or send an email to the mailing list at [email protected]

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:
%config Application.verbose_crash=True

[ahmetkotan]

This issue's root not due to ipython. Actually coming from jedi package. But ipython also has an error related to this. sys module not imported in get_completions exception.

[ahmetkotan]

sys and traceback modules added 7 months ago but not updated in pypi. Because of this, this error not related to ipython. It's error in jedi.

• forgotten sys
• forgotten traceback

[lociii]

Could you please give some more detailed info on why this is an issue in jedi?
Latest ipython release on PyPI is 7.19.0 which contains the missing import that is - as you already noted - fixed on master but not released.
https://github.com/ipython/ipython/blob/7.19.0/IPython/terminal/ptutils.py

No import of sys
https://github.com/ipython/ipython/blob/223e783c447a773a497809646ca0d874ea10ceeb/IPython/terminal/ptutils.py#L20-L24

Usage of sys
https://github.com/ipython/ipython/blob/223e783c447a773a497809646ca0d874ea10ceeb/IPython/terminal/ptutils.py#L116

[mmesiti]

Reading the traceback:

1. The sys and traceback imports are missing in IPython/terminal/ptutils.py, and this is the problem that causes the Ipython crash;
2. In jedi/api/__init__.py, it complains that the "column" argument is passed to Script.__init__, which does not accept such argument;
3. This error comes from IPython/core/completer.py, where at line 1373 a new jedi.Interpreter is created, passing a "column" argument to it, which chokes it.

The way to create a Script object has changed between jedi 0.17 and jedi 0.18:
In 0.17:

     def __init__(self, code=None, line=None, column=None, path=None,                                    
                 encoding=None, sys_path=None, environment=None,                                               
                 project=None, source=None):

in 0.18:

    def __init__(self, code=None, *, path=None, environment=None, project=None):

If you install jedi 0.17 instead of jedi 0.18 the current version of ipython should work.
This worked for me:

pip uninstall jedi
pip install jedi==0.17.2