Checking support for network connections from Python client to IPv6 server

[Cameron Simpson]

On 02Jun2019 07:14, Markus Elfring <Markus.Elfring at web.de> wrote:
>> "Handled transparently" means that an ipv6 server can handle connections
>> from ipv4 clients without doing anything special.
>
>It is nice if this conversion is working.
>
>
>> They just appear to come from a specific IPv6 address range.
>
>I got expected connections by my small script “socket-send_test_data1.tcl”.
>
>
>>> Under which circumstances will the Python programming interfaces
>>> support the direct usage of the identification “::1”?
>>
>> I'm not sure I understand the question. They do.
>
>How would like to explain the error message “socket.gaierror: [Errno -9]
>Address family for hostname not supported” on my Linux test system 
>then?

Can you supply a tiny standalone piece of code demonstrating this error 
please? I've dug through the thread and can't see one.

Cheers,
Cameron Simpson <cs at cskk.id.au>