尝试运行jupyter noteb时模块'attr'出错

Question

我正在尝试在windows 10 PC上运行jupyter笔记本。
在安装了miniconda并安装了所需的库之后，我运行了jupyter notebook，得到了以下错误。
我使用jupyter笔记本几年了，这是第一次看到这个错误。
有没有人遇到过这个或者知道如何解决这个问题？在

  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'

Answer 1

我遇到了同样的问题，并通过将attrs模块降级到19.2.0来解决它