在 Mac 上安装 Python 和 pip 不显示版本？

Question

On Mac OS.

Downloaded the Python from their website.

Python -V return Python 2.7.16 , and python3 -V return Python 3.9.4

Installed pip with: python3 get-pip.py , got Successfully installed pip-21.0.1

But when I run pip -V I get File "/usr/local/bin/pip", line 1.... SyntaxError: invalid syntax

After reading here a lot, i could not understand (in simple words for dumbs):

1. How could you "alias" or update python to show/run in version 3+?
2. Why I can't get the pip version if it's installed ?

Answer 1

Use pip as a module instead

% python3 -m pip --version
pip 21.0.1 from /usr/local/lib/python3.9/site-packages/pip (python 3.9)

Answer 2

Anyone who's interested, what i had to do is to

1. CD the project on terminal
2. run python3 -m venv env (this create virtual environment of python3 inside project)
3. run source env/bin/activate activate it.
4. now pip --version or python --version will return the right results.

From my basic knowledge i understand that the mac is using python2 which we don't want to interrupt, so we install python3 and create a 'virtual environment' for it inside our project folder, once its in, we can install all other things.

to deactivate (stop the virtual env) we run deactivate