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这篇文章主要介绍“jupyter启动报错module 'lib' has no attribute 'X509_-_FLAG_CB_ISSUER_CHECK'如何解决”，在日常操作中，相信很多人在jupyter启动报错module 'lib' has no attribute 'X509_-_FLAG_CB_ISSUER_CHECK'如何解决问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”jupyter启动报错module 'lib' has no attribute 'X509_-_FLAG_CB_ISSUER_CHECK'如何解决”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！
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jupyter notebook
windows11启动报错======
Traceback (most recent call last):
File "D:\Anaconda3-5.3.1-Windows-x86_64\Scripts\jupyter-notebook-script.py", line 6, in
from notebook.notebookapp import main
File "D:\Anaconda3-5.3.1-Windows-x86_64\lib\site-packages\notebook\notebookapp.py", line 82, in
from .services.contents.manager import ContentsManager
File "D:\Anaconda3-5.3.1-Windows-x86_64\lib\site-packages\notebook\services\contents\manager.py", line 17, in
from nbformat import sign, validate as validate_nb, ValidationError
File "D:\Anaconda3-5.3.1-Windows-x86_64\lib\site-packages\nbformat\__init__.py", line 33, in
from .validator import validate, ValidationError
File "D:\Anaconda3-5.3.1-Windows-x86_64\lib\site-packages\nbformat\validator.py", line 12, in
from jsonschema import ValidationError
File "D:\Anaconda3-5.3.1-Windows-x86_64\lib\site-packages\jsonschema\__init__.py", line 18, in
from jsonschema.validators import (
File "D:\Anaconda3-5.3.1-Windows-x86_64\lib\site-packages\jsonschema\validators.py", line 8, in
import requests
File "D:\Anaconda3-5.3.1-Windows-x86_64\lib\site-packages\requests\__init__.py", line 95, in
from urllib3.contrib import pyopenssl
File "D:\Anaconda3-5.3.1-Windows-x86_64\lib\site-packages\urllib3\contrib\pyopenssl.py", line 46, in
import OpenSSL.SSL
File "D:\Anaconda3-5.3.1-Windows-x86_64\lib\site-packages\OpenSSL\__init__.py", line 8, in
from OpenSSL import crypto, SSL
File "D:\Anaconda3-5.3.1-Windows-x86_64\lib\site-packages\OpenSSL\crypto.py", line 1550, in
class X509StoreFlags(object):
File "D:\Anaconda3-5.3.1-Windows-x86_64\lib\site-packages\OpenSSL\crypto.py", line 1570, in X509StoreFlags
CB_ISSUER_CHECK = _lib.X509_-_FLAG_CB_ISSUER_CHECK
AttributeError: module 'lib' has no attribute 'X509_V_FLAG_CB_ISSUER_CHECK'
解决办法：======
pip uninstall pyOpenSSL
pip install pyOpenSSL
问题解决。
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