MacOS has only had Python 2.x installed. Python and Ruby have both been deprecated in Catalina (10.15) and will not be pre-installed on MacOS in future releases

MacOS has only had Python 2.x installed. Python and Ruby have both been deprecated in Catalina (10.15) and will not be pre-installed on MacOS in future releases: https://developer.apple.com/documentation/macos_release_notes/macos_10_15_beta_release_notes https://developer.apple.com/documentation/macos_release_note... > Scripting language runtimes such as Python, Ruby, and Perl are included in macOS for compatibility with legacy software. Future versions of macOS won’t include scripting language runtimes by default, and might require you to install additional packages. If your software depends on scripting languages, it’s recommended that you bundle the runtime within the app.