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Loads configuration settings from a file by instantiating and returning a Config object with the specified configuration file path.

Purpose

This function serves as a factory method to create Config instances from configuration files. It provides a simple interface for loading application settings from external configuration files (likely YAML or JSON based on imports), enabling separation of configuration from code. The function accepts an optional file path, allowing for default configuration loading when no path is specified.

Source Code

def load_config(config_path: Optional[str] = None) -> Config:
    """
    Load configuration from file.
    
    Args:
        config_path: Path to configuration file
        
    Returns:
        Config instance
    """
    return Config(config_path)

Parameters

Parameter Details

config_path: Optional string specifying the file system path to a configuration file. When None (default), the Config class likely uses a default configuration file path or built-in defaults. Should be a valid file path string pointing to a YAML or JSON configuration file.

Return Value

Type: Config

Returns a Config instance object that encapsulates the loaded configuration settings. The Config object provides access to configuration parameters loaded from the specified file or default configuration. The exact structure and available properties depend on the Config class implementation.

Dependencies

• yaml
• pathlib

Required Imports

from typing import Optional
from config_module import Config

Usage Example

# Load configuration from default location
config = load_config()

# Load configuration from specific file
config = load_config('/path/to/config.yaml')

# Load configuration with relative path
config = load_config('./configs/app_config.json')

# Access configuration values (example)
# database_url = config.database_url
# api_key = config.api_key

Best Practices

• Ensure the configuration file exists at the specified path before calling this function to avoid initialization errors
• Use absolute paths or paths relative to a known working directory for reliability
• Handle potential exceptions from Config instantiation (file not found, invalid format, parsing errors)
• Consider validating the returned Config object to ensure all required settings are present
• Document the expected configuration file format and required fields for users of this function
• Use environment-specific configuration files (dev, staging, prod) by passing different paths

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