No module named '_ssl'

python error ssl

字数统计: 434阅读时长: 2 min

 2021/11/27 

环境

系统: CentOS Linux release 8.4.2105 (Core)

背景

安装后 Jupyter Notebook后，执行jupyter notebook出现如下报错:

jupyter notebook
Traceback (most recent call last):
  File "/usr/local/python3/bin/jupyter-notebook", line 5, in <module>
    from notebook.notebookapp import main
  File "/usr/local/python3/lib/python3.9/site-packages/notebook/notebookapp.py", line 60, in <module>
    from tornado import httpserver
  File "/usr/local/python3/lib/python3.9/site-packages/tornado/httpserver.py", line 29, in <module>
    import ssl
  File "/usr/local/python3/lib/python3.9/ssl.py", line 98, in <module>
    import _ssl             # if we can't import it, let the error propagate
ModuleNotFoundError: No module named '_ssl'

执行以下命令安装ssl相关组件后，依旧报错。

1	yum install -y openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel gcc-c++ gcc openssl-devel

根据google大法，了解到需要添加ssl支持后重新安装python可以解决，亲测有效。

下载Python3.9.5

1 2	wget https://www.python.org/ftp/python/3.9.5/Python-3.9.5.tgz tar zxvf Python-3.9.5.tgz

安装必须的包

1	dnf -y install gcc libffi-devel

添加ssl支持

编辑Python-3.9.5/Modules/Setup文件，修改或直接添加以下信息。

_socket socketmodule.c
SSL=/usr/local/ssl
_ssl _ssl.c \
-DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \
-L$(SSL)/lib -lssl -lcrypto

安装

cd Python-3.9.5/
mkdir /usr/local/python3/
./configure --prefix=/usr/local/python3 --enable-optimizations
make && make install

替换原先的 Python3 和 pip3

mv /usr/bin/python3 /usr/bin/python.bak
mv /usr/bin/pip3 /usr/bin/pip.bak
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3

添加环境变量

1 2	echo "export PATH=/usr/local/python3/bin:$PATH">>/root/.bashrc source /root/.bashrc

执行python3进行测试

python3
Python 3.9.5 (default, Oct 15 2021, 16:44:21)
[GCC 8.4.1 20200928 (Red Hat 8.4.1-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import _ssl
>>>

不再报错了，问题解决~

Done.

原文作者：Saki Shum

原文链接：https://sakishum.com/2021/11/27/No-module-named-ssl/

发表日期：十一月 27日 2021, 1:02:54 凌晨

更新日期：三月 5日 2022, 5:57:43 下午