I'm using macbook on arm processor.
And I tried to upgrade python2 to python3, but I don't know how to do it.
I'm using homebrew and I installed both python2 and python3 through homebrew.
I typed a command like that.
python -v => python 2.7.16
python3 --version => python3.9.1
python2 --version => python 2.7.16
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