Python recipes to store configs across multiple files but access centrally

Question

I am trying to store and manage project-specific configurations in a set of python files and provide an easy API to access them in the code.

• I want to store the project config in separate files
• I want to access the configs using a single python object/API
• Each project config can have a different set of keys

My attempt at this:

class DefaultConfig:
    def __init__(self):
        self._config = {}

    def register(self, conf):
        key = conf["project"]
        self._config[key] = conf

    def get(self, project):
        return self._config[project]

default_config = DefaultConfig()

Example of configs:

# a.py
default_config.register({
    "project": "A",
    "location": "US",
    "zipcodes": [1, 2, 3, 4, 5],
})

# b.py
default_config.register({
    "project": "B",
    "location": "Canada",
    "area_codes": [1, 2, 3, 4, 5],
    "distance": {1: 12, 2: 13},
})

I want to be able to access the configs like this:

from a.b.c import default_config

project = "A"
conf = default_config.get(A)

What are some nice patterns to solve this problem?

I tried looking at @route decorators in flask and the django settings module, but neither seemed to work too well.