How do I make Python 3.5 my default version on MacOS?

Question

I have just installed Python 3.5.1 on my Mac (running the latest version of OSX). My system came with Python 2.7 installed. When I type IDLE at the Terminal pro

Answer 1

Do right thing, do thing right!

1. Open your terminal,

2. input python -V, It likely shows:Python 2.7.10

3. input python3 -V, It likely shows:Python 3.7.2

4. input where python or which python, It likely shows:/usr/bin/python

5. input where python3 or which python3, It likely shows: /usr/local/bin/python3

6. add the following line at the bottom of your PATH environment variable file in ~/.profile file or ~/.bash_profile under Bash or ~/.zshrc under zsh.

alias python='/usr/local/bin/python3' OR alias python=python3

7. input source ~/.bash_profile under Bash or source ~/.zshrc under zsh.

8. Quit the terminal.

9. Open your terminal, and input python -V, It likely shows: Python 3.7.2

Note, the ~/.bash_profile under zsh is not that ~/.bash_profile.

The PATH environment variable under zsh instead ~/.profile (or ~/.bash_file) via ~/.zshrc.

Hope this helped you all!