The use of PIP and Pip in different versions of Python under Ubuntu

Since the Ubuntu system comes with python2.7 (default) and python3.4, you do not need to install Python yourself.

You can use Python-v and python3-v to view the version of Python that is installed.

Ubuntu does not have PIP installed by default in different versions of Python, so you need to manually install PIP yourself.

To install PIP in different versions, you can use the command:

sudo apt-get install Python-pip

sudo apt-get install Python3-pip

After the installation is complete, you can use Pip-v and pip3-v to check the PIP version.

When installing additional libraries using PIP, the default Python version can be used directly with Pip install XXXX

Additional Python versions can use python3-m pip install xxxx or PIP3 install xxxx

The use of PIP and Pip in different versions of Python under Ubuntu