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Any idea why IPython.get_ipython() is returning None?

See original GitHub issue

Traceback (most recent call last):
  File "/Users/kkotari/.pyenv/versions/3.7.4/bin/ipycli", line 8, in <module>
    sys.exit(run())
  File "/Users/kkotari/.pyenv/versions/3.7.4/Python.framework/Versions/3.7/lib/python3.7/site-packages/ipycli/ipycli.py", line 8, in run
    IPython.get_ipython().define_macro('var', """a=10
AttributeError: 'NoneType' object has no attribute 'define_macro'

Repo

I was trying to create a python package where the scripts needs to run on IPython. Is there any special settings to create such a package.

ipython --version 7.14.0

Thanks in advance.

Issue Analytics

State:
Created 3 years ago
Comments:9 (4 by maintainers)

Top GitHub Comments

1reaction

Carreaucommented, Aug 1, 2021

The error I get is as follows: Traceback (most recent call last):

As you probably correctly guessed, this is because get_ipython() only forwas from within IPython sessions.

File “/data/oms/sarah/my_ann_solo/test_score1.py”, line 20 def verify_extension(supported_extensions: List[str], filename: str) -> None: ^ SyntaxError: invalid syntax

Can you check if IPython is not installed for Python 2 ? Or to be more sure to run IPython from Python 3, you can do:

/path/to/python3 -m IPython test_score1.py

If this still does not work, can you open a separate issues, with possibly the content of your files so that we can investigate ?

Thanks.

0reactions

Carreaucommented, Aug 5, 2021

Any memory error like that are really unlikely to happen because of IPython/Python.

Timing with magics is really just a thin wrapper around python’s timeit module so you should be able to time in pure python as well, though you will need to put your code in strings literals.

On Tue, Aug 3, 2021, 16:08 Sarah-2021-scu @.***> wrote:

Thank you for your solution. I was timing the cell in my notebook which was causing the error. On changing that the command is working fine. However I am experiencing another error of “free(): invalid pointer Aborted (core dumped)” after execution. I guess valgrind can generate a report of the analysis but I need to have sudo permission for building the same. I am trying to do it with the build.

Thanks in advance.

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