Steps to install the latest Python on your Mac

Install Anaconda with the following command,

% brew cask install anaconda

Just set the path as follows.

% echo 'export PATH="/usr/local/anaconda3/bin:$PATH"' >> ~/.zshrc
% source ~/.zshrc

With just this, you can build the latest Python execution environment.

% python -V
Python 3.7.4

Also, check the list of installed packages (including version information) by running the following command:

% conda list
# packages in environment at /usr/local/anaconda3:
#
# Name                    Version                   Build  Channel
_anaconda_depends         2019.03                  py37_0  
_ipyw_jlab_nb_ext_conf    0.1.0                    py37_0  
alabaster                 0.7.12                   py37_0  
anaconda                  custom                   py37_1  
anaconda-client           1.7.2                    py37_0  
anaconda-navigator        1.9.7                    py37_1  
anaconda-project          0.8.4                      py_0  
...

To update all installed packages, use the following command.

% conda update --all

By the way, instead of specifying --all as an option, you can write the package name to update only a specific package.

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