An example to understand how merging work with omegaconf

experiment_omegaconf_merge.py

# Experiment 2 - Simplified Merge Config Case

%%writefile base.yml
# conf/local/parameters.yaml
client:
  url: http://${host}:${server.port}/
  server_port: ${server.port}


%%writefile local.yml
server:
  host: localhost
  port: 80

env_config =  OmegaConf.load('base.yml')
base_config =  OmegaConf.load('local.yml')
# Roughly what happens in `load_and_merge_dir_config`
env_config = dict(env_config)
base_config = dict(base_config)

config = base_config.copy()

config.update(env_config)

config

config["client"]._parent # It can't see the other keys merge from the dictionary 

config["client"].host

%%writefile test.yml
server:
  host: localhost
  port: 80

client:
  url: http://${server.host}:${server.port}/
  server_port: ${server.port}

one_config = OmegaConf.load("test.yml")
one_config["client"]._parent

OmegaConf.to_container(one_config, resolve=True)