hydra-core

import hydra from omegaconf import DictConfig, OmegaConf import os # Create a config directory and file (e.g., conf/config.yaml) # In a real project, this would be a file on disk. # For this example, we simulate it. # Make sure to run `mkdir -p conf` first if running directly. config_content = """ app: name: MyHydraApp version: 1.0.0 db: driver: mysql user: ${oc.env:DB_USER, omry} password: ${oc.env:DB_PASSWORD, secret} """ # Create a dummy config file for the quickstart to be runnable # In a typical setup, 'conf/config.yaml' would exist beforehand. if not os.path.exists('conf'): os.makedirs('conf') with open('conf/config.yaml', 'w') as f: f.write(config_content) @hydra.main(version_base="1.3", config_path="conf", config_name="config") def my_app(cfg: DictConfig) -> None: print(f"Application Name: {cfg.app.name}") print(f"Database Driver: {cfg.db.driver}") print(f"Database User: {cfg.db.user}") print(f"Database Password: {cfg.db.password}") print(f"Original Working Directory: {hydra.utils.get_original_cwd()}") print(f"Current Working Directory: {os.getcwd()}") print(OmegaConf.to_yaml(cfg)) if __name__ == "__main__": # Set environment variables for demonstration if not already set os.environ['DB_USER'] = os.environ.get('DB_USER', 'my_db_user') os.environ['DB_PASSWORD'] = os.environ.get('DB_PASSWORD', 'my_db_pass') my_app() # Clean up the dummy config file for repeated runs os.remove('conf/config.yaml') os.rmdir('conf')