Answers for "pip for python 3"

how to install pip

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
#Once you do that, enter line 3 inside
python get-pip.py

how to install python-pip3

sudo apt install python3-pip

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