问题
I did on my mac big sur:
brew uninstall python@2
and then, I tried to check the version of python I have
% pwd
/Library/Frameworks/Python.framework/Versions
% ls -al
total 0
drwxrwxr-x 6 root wheel 192 Jan 11 14:18 .
drwxr-xr-x 6 root wheel 192 Jan 11 14:18 ..
drwxrwxr-x 10 root admin 320 Nov 8 2017 3.6
drwxrwxr-x 10 root admin 320 Jan 2 18:24 3.8
drwxrwxr-x 11 root admin 352 Jan 11 14:18 3.9
lrwxr-xr-x 1 root wheel 3 Jan 11 14:18 Current -> 3.9
% python -V
Python 2.7.16
% python3 -V
Python 3.9.1
in another location
% ls -al
total 0
drwxr-xr-x 7 root wheel 224 Jan 1 2020 .
drwxr-xr-x 5 root wheel 160 Jan 1 2020 ..
lrwxr-xr-x 1 root wheel 3 Jan 1 2020 2.3 -> 2.7
lrwxr-xr-x 1 root wheel 3 Jan 1 2020 2.5 -> 2.7
lrwxr-xr-x 1 root wheel 3 Jan 1 2020 2.6 -> 2.7
drwxr-xr-x 11 root wheel 352 Jan 1 2020 2.7
lrwxr-xr-x 1 root wheel 3 Jan 1 2020 Current -> 2.7
% pwd
/System/Library/Frameworks/Python.framework/Versions
Why does Python 2.7.16 still appears and it is not defaulting to python 3.9.1 ? How do I clean this up? And where is Python 2.7.16 located, I cant find it link anywhere. I tried this as well and it doesnt show any version info.
% pyenv versions
* system (set by /Users/axilaris/.pyenv/version)
I am having loads of trouble with Mac OS Big Sur. How do I set the python links correctly and do necessary python cleanups in my mac now ?
来源：https://stackoverflow.com/questions/65662360/how-are-python-version-2-and-version-3-organized-i-have-trouble-after-brew-uni