Key transformations

EnvProxy transforms each requested key into the actual env-var name according to three flags set on the proxy:

Option	Default	Effect
prefix	None	Prepends <prefix>_ to every key.
uppercase	True	Uppercases the resulting key.
underscored	True	Replaces - with _ in the resulting key.

Example

proxy = EnvProxy(prefix="myapp", uppercase=True, underscored=False)
proxy.get_any("var")  # looks up "MYAPP_VAR"

proxy = EnvProxy(prefix="myapp")  # uppercase=True, underscored=True
proxy.get_any("api-token")  # looks up "MYAPP_API_TOKEN"

Caching

The transformation is memoised — see Tune the key cache for the cache size knob.