

It allows developers to define which version of python to use on a per-project basis. Pyenv is an open-source tool used for managing multiple python environments. Fortunately, there is a tool called pyenv that will allow us to safely install the latest python version - regardless of whether we have a system python version installed or not. Updating it can break certain tools that our operating system needs for essential tasks, including dependency management software.

In cases where older are versions present, it is unsafe to update system python directly. In other cases, the command above could fail completely, indicting that python is not installed at all. Changed in 3.7.4 OpenSSL has been updated from 1.1.0 to 1.1.1.The output above indicates that the system version of python installed is much older than 3.7. Please carefully read the Important Information displayed during installation for information about SSL/TLS certificate validation and the Install mand.

Both variants come with batteries-included versions of Tcl/Tk 8.6 for users of IDLE and other tkinter-based GUI applications third-party and system versions of Tcl/Tk are no longer used.

Changed in 3.7.4 The 64-bit/32-bit variant that also works on very old versions of macOS, from 10.6 (Snow Leopard) on, is now deprecated and will no longer be provided in future releases see the macOS installer ReadMe file for more info. The default variant is 64-bit-only and works on macOS 10.9 (Mavericks) and later systems.
