Python tools

#Force to install a version Python-3.7.4

 wget https://www.python.org/ftp/python/3.7.4/Python-3.7.4.tgz

tar xvf Python-3.7.4.tgz
cd Python-3.7.4
./configure --enable-optimizations --with-ensurepip=install
make -j 8
sudo make altinstall



#Install pip module into any version of Python

curl -o get-pip.py https://bootstrap.pypa.io/pip/get-pip.py
python3.8 get-pip.py  #or
python3.9 get-pip.py