Pip is not linking to my upgraded Python version. Package python3-pip is not available, but is referred to by another package

Question

Having issues linking pip to python 3.7. Both pip and pip3 been installed but linking to Python 2.7.

I have tried to reinstall Python3 and then pip no progress.

I get the following message:

Package python3-pip is not available, but is referred to by another package.

This may mean that the package is missing, has been obsoleted, or is only available from another source

$ python --version
Python 3.7.4

$ pip -V
/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/__init__.py:83: RequestsDependencyWarning: Old version of cryptography ([1, 2, 3]) may cause slowdown.
  warnings.warn(warning, RequestsDependencyWarning)
pip 19.2.1 from /usr/local/lib/python2.7/dist-packages/pip (python 2.7)

$ pip3 -V
/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/__init__.py:83: RequestsDependencyWarning: Old version of cryptography ([1, 2, 3]) may cause slowdown.
  warnings.warn(warning, RequestsDependencyWarning)
pip 19.2.1 from /usr/local/lib/python2.7/dist-packages/pip (python 2.7)


$ sudo apt-get install python3-pip
[sudo] password for TarikDev: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package python3-pip is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'python3-pip' has no installation candidate

Answer 1

First use this command

sudo apt-get update

Two packages will be downloaded, of size 16 MB. Then:

sudo apt-get install python2-pip