error in module 'attr' when trying to run jupyter notebook

Question

I am trying to run jupyter notebook in windows 10 PC.
After installing miniconda and installed required library, I ran jupyter notebook and got following error.
I have been using jupyter notebook for few years and this is first time to see this error.
Does anyone came across this or know how to solve?

  File "C:\Users\katsuya.obara\AppData\Local\Continuum\miniconda3\envs\py35\Scripts\jupyter-notebook-script.py", line 6, in <module>
    from notebook.notebookapp import main
  File "C:\Users\katsuya.obara\AppData\Local\Continuum\miniconda3\envs\py35\lib\site-packages\notebook\notebookapp.py", line 83, in <module>
    from .services.contents.manager import ContentsManager
  File "C:\Users\katsuya.obara\AppData\Local\Continuum\miniconda3\envs\py35\lib\site-packages\notebook\services\contents\manager.py", line 17, in <module>
    from nbformat import sign, validate as validate_nb, ValidationError
  File "C:\Users\katsuya.obara\AppData\Local\Continuum\miniconda3\envs\py35\lib\site-packages\nbformat\__init__.py", line 33, in <module>
    from .validator import validate, ValidationError
  File "C:\Users\katsuya.obara\AppData\Local\Continuum\miniconda3\envs\py35\lib\site-packages\nbformat\validator.py", line 12, in <module>
    from jsonschema import ValidationError
  File "C:\Users\katsuya.obara\AppData\Local\Continuum\miniconda3\envs\py35\lib\site-packages\jsonschema\__init__.py", line 12, in <module>
    from jsonschema.exceptions import (
  File "C:\Users\katsuya.obara\AppData\Local\Continuum\miniconda3\envs\py35\lib\site-packages\jsonschema\exceptions.py", line 141, in <module>
    @attr.s(hash=True)
AttributeError: module 'attr' has no attribute 's'

Is it `attr`, or [`attrs`](https://www.attrs.org/en/stable/)? — AMC, Nov 11 '19 at 01:24
It seems? Is it coming from your code, or another library that you’re using? It looks like the `jsonschema` module is at fault. — AMC, Nov 11 '19 at 03:12
This error is not from my code. from library I am using. If it is error from jsonschema, how I can fix this? — Katsuya Obara, Nov 12 '19 at 03:38
It’s not super clear in your post, is this error occurring when you open the notebook, or when you actually run the code (or somewhere else)? Can you share the notebook? — AMC, Nov 12 '19 at 04:06
It might also be useful to see the list of packages/libraries you have installed. — AMC, Nov 12 '19 at 04:12
this *sounds* like you have a file named `attr.py` sitting in your working directory — anthony sottile, Dec 30 '19 at 00:25

score 7 · Answer 1 · answered Apr 07 '20 at 07:34

7

I believe the error will be solved if you install attrs which actually contains both the above mentioned packages.

$ pip uninstall attr
$ pip install attrs

But for that first you would need to uninstall your attr and then install attrs. It should work as expected after the above changes.

answered Apr 07 '20 at 07:34

DeshDeep Singh

1,817
2
23
43

What if one needs both at the same time? – Akito Jan 21 '23 at 12:54
Then skip step 1, do not uninstall! – DeshDeep Singh Jan 23 '23 at 07:47

score 3 · Answer 2 · answered Apr 07 '20 at 07:28

3

Please refer this link for detailed answer for the solution.

https://stackoverflow.com/a/61074103/10362801

Just run below 2 commands in admin mode

pip uninstall attr

conda install --force attrs

answered Apr 07 '20 at 07:28

Shiv948

469
5
13

score 0 · Answer 3 · answered Dec 30 '19 at 00:13

0

I got the same problem and solved it by downgrading the attrs module to 19.2.0

answered Dec 30 '19 at 00:13

dhk429

1

1

this shouldn't matter, `jsonschema` is compatible with the latest `attrs` and `attr.s` has been present in every version that `jsonschema` can install against -- you might've change something else while upgrading / downgrading? – anthony sottile Dec 30 '19 at 00:27

Nizam · Answer 4 · 2020-02-21T14:51:14.560

0

pip3 install --upgrade setuptools --user solved the problem for me.

Hope this helps.

edited Feb 21 '20 at 14:51

answered Feb 05 '20 at 04:42

Nizam

340
1
6
11

error in module 'attr' when trying to run jupyter notebook

4 Answers4