IP version 6 or IPv6 is increasingly adopted by the industry to build newer applications. In case you would like to write an IPv6 application, the first thing you'd like to know is if your machine supports IPv6. This can be done from the Linux/Unix command line, as follows:

$ cat /proc/net/if_inet6 
00000000000000000000000000000001 01 80 10 80       lo
fe80000000000000642a57c2e51932a2 03 40 20 80     wlo1
  

From your Python script, you can also check if the IPv6 support is present on your machine, and Python is installed with that support.