Linux上运行Python3程序运行报错：ModuleNotFoundError: no module named '_ssl'解决

Linux上运行Python3程序的时候，报如下错误：

ModuleNotFoundError: no module named '_ssl'

或者pip3 install的时候，遇到如下错误：

pip is configured with locations that require tls/ssl
can't connect to https url because the ssl module is not available

原因是没有安装正确的openssl

首先确保安装了openssl11，如下：

yum install openssl11 openssl11-devel -y

cd /usr/local/openssl11 
ln -s /usr/lib64/openssl11 lib 
ln -s /usr/include/openssl11 include

重新编译装安装Python3，指定刚才安装的openssl11，如下：

cd /opt/
wget https://www.python.org/ftp/python/3.10.13/Python-3.10.13.tgz
tar xvf Python-3.10.13.tgz
cd /opt/Python-3.10.13

./configure --enable-optimizations --with-openssl=/usr/local/openssl11
# --with-openssl=/usr/local/openssl11 也可以用如下替换配置，然后 ./configure --enable-optimizations
sed -i 's/PKG_CONFIG openssl /PKG_CONFIG openssl11 /g' configure
make altinstall

#测试是否成功
python3.10 -m ssl