Can't install pip pyserial on MacOs, what should I do?

Question

Python

Tried to install pip pyserial on MacOs, gives error:
iMac-HOGUN:~ petergalkevych$ pip install pyserial

DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-... pip 21.0 will remove support for this functionality.
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: pyserial in ./Library/Python/2.7/lib/python/site-packages (3.4)

Says that I have an old Python, although I did not install it, at the moment I have Python 3.9.0

Answer 1

pip3 install pyserial