Programmatically get host's ip from within Docker container with Python

Question

I'm aware that you can get a host's ip programatically with Python doing something like:

from socket import gethostname, gethostbyname

ip = gethostbyname(gethostname())
print(ip)

but, as expected, when running the code mentioned above from a container (just ftr, with user namespaces enabled) the output is 172.17.0.2.

How can I programmatically get the host's ip from within the container?

Note: I'm working in a Linux environment.

Answer 1

This works on my mac

ip = gethostbyname('docker.for.mac.localhost')