#Thanks @DeletedFromEarth for helping in this journey from os import environ from typing import Dict, Optional class TokenParser: def __init__(self, config_file: Optional[str] = None): self.tokens = {} self.config_file = config_file def parse_from_env(self) -> Dict[int, str]: self.tokens = dict( (c + 1, t) for c, (_, t) in enumerate( filter( lambda n: n[0].startswith("MULTI_TOKEN"), sorted(environ.items()) ) ) ) return self.tokens