Kubernetes for Developers

Using the ConfigMap within Python/Flask

Within Python, you can view environment variables using os.environ, for example:

import osos.environ.get('CONFIG_FILE’)

You can set a default value when using os.environ.get in your code to handle a case when the environment variable isn’t set:

import osos.environ.get('CONFIG_FILE’,’./feature.flags’)

We set the CONFIG_FILE environment variable here to show you how it could be done, but it is not strictly necessary to read the configuration file–more a convenience to allow you to override that value if desired. 

Python also includes a module to parse and read INI-style configuration files, like the one we added in ConfigMap. Continuing with the example:

from configparser import SafeConfigParserfrom pathlib ...