Hello all,

What happened (please include outputs or screenshots):
I need to access multiple k8s clusters at once, all behind a proxy.
To be able to reach many k8s clusters at once, I use the function new_client_from_config_dict.

Unfortunatly this do no allow to have an HTTP(S) PROXY set.

This #333 solution do not work because the new_client_from_config_dict is not using the _default object in kube_client.Configuration

What you expected to happen:
Been able to set a proxy variable or inject a client configuration when using the function new_client_from_config_dict

How to reproduce it (as minimally and precisely as possible):

# This is working
config.load_kube_config()
client.Configuration._default.proxy = "MY_HTTP_PROXY"
client.CoreV1Api().list_namespace()

# Impossible to set a proxy with a new client from config
my_client = config.new_client_from_config_dict(kubeconfig2)
my_client.configuration.proxy = "MY_HTTP_PROXY"
client.CoreV1Api(api_client=my_client).list_namespace()
# >> Proxy error

Environment:

• Kubernetes version (kubectl version):

• 1.23.8

• OS (e.g., MacOS 10.13.6):

• MacOS 13.0.1

• Python version (python --version)

• 3.9.13

• Python client version (pip list | grep kubernetes)

• 25.3.0

Thanks,