Override config values from environment

config_overrides.py

import os

KEY1 = 'VALUE1'
KEY2 = 'VALUE2'

# Override values from config_local.py if exists
try:
    import config_local
    for key, value in config_local.__dict__.items():
        if key.isupper() and key in globals():
            globals()[key] = value
except ImportError:
    pass

# Override values from environment
for key, value in globals().copy().items():
    if key.isupper() and key in os.environ:
        globals()[key] = os.environ[key]
        
# export KEY2='NEWVALUE2'