SHELL

python2 pip install

sudo apt install python2.7 python2.7-dev -y && curl -O https://bootstrap.pypa.io/pip/2.7/get-pip.py && sudo python2.7 get-pip.py

how to install python-pip3

 sudo apt install python3-pip

pip install for python 2 and python3

$ curl -O https://bootstrap.pypa.io/get-pip.py
$ sudo python3.2 get-pip.py

pip2 install

# install pakage to python2

pip install --upgrade sentry-sdk
curl -O https://bootstrap.pypa.io/pip/2.7/get-pip.py
python get-pip.py
pip2 install termcolor

pip install python 3

You cannot just pip install python3 because it is not a library.

If you want to install the latest python3:
https://www.python.org/ftp/python/3.8.2/python-3.8.2.exe