python升级3.7

https://www.jianshu.com/p/61cc491a701b
先必须安装：执行命令yum install -y bzip2-devel安装包

注意：python3.7 必须要 openssl 1.1以上
openssl version


wget https://www.python.org/ftp/python/3.7.9/Python-3.7.9.tar.xz

tar xvf Python-3.7.9.tar.xz

cd Python-3.7.9

#./configure --enable-optimizations
./configure  --with-openssl=/usr/local/openssl --enable-optimizations  --enable-shared  CFLAGS=-fPIC

sudo make altinstall

export LD_LIBRARY_PATH=/lib:/usr/lib:/usr/local/lib
sudo ldconfig /usr/local/lib

/usr/local/bin/python3.7 -m pip install --upgrade pip


sudo update-alternatives --install /usr/local/bin/python3 python /usr/local/bin/python3.7 1
sudo update-alternatives --install /usr/local/bin/python3 python /usr/local/bin/python3.6 2
sudo update-alternatives --config python




################
安装对应版本的pip
curl https://bootstrap.pypa.io/pip/3.6/get-pip.py -o get-pip-3.6.py
sudo python3 get-pip-3.6.py

curl https://bootstrap.pypa.io/pip/3.6/get-pip.py -o get-pip-3.7.py
sudo python3 get-pip-3.7.py

安装导出项目中的import包(并不是所有的，只是项目import的)
pip3 install pipreqs
cd /psd/项目目录
pipreqs ./
cat  ./requirements.txt

#切换python版本
sudo update-alternatives --config python

#
export LD_LIBRARY_PATH=/lib:/usr/lib:/usr/local/lib
sudo ldconfig /usr/local/lib
sudo python3 get-pip-3.7.py

#安装刚才旧版本下导出的import，重新安装
pip3 install -r requirements.txt