what does x reprsent in this code ?

[astral_travel]

okay,
if i write - pip3 --version
it shows me the following:

Output:
pip 8.1.1 from /usr/lib/python3/dist-packages (python 3.5)

so it shows that the pip3 version for python3.5 is 8.1.1
while if i check - pip --version
it shows:

Output:
pip 20.0.2 from /home/tal/.local/lib/python2.7/site-packages/pip (python 2.7)

so what i wanna have is the latest pip version, on python3.5

any advice ?