Pip3 is using python2 code example
Example 1: python3 pip install
[server]$ python3 -m pip install
Example 2: pip python3
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
[server]$ python3 -m pip install
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py