def get_target_modules(config):
    """
    Determines the target modules based on the provided configuration.

    Args:
        config (object): Configuration object that contains the following attributes:
            - target_modules (str or None): Specifies the target modules. It can be:
                - None: Returns the default target modules for the model specified in the config.
                - An empty string: Returns the default target modules for the model specified in the config.
                - "all-linear": Returns the string "all-linear".
                - A comma-separated string: Returns a list of target modules split by commas.

    Returns:
        list or str: A list of target modules or a specific string ("all-linear") based on the configuration.
    """
    if config.target_modules is None:
        return TARGET_MODULES.get(config.model)
    if config.target_modules.strip() == "":
        return TARGET_MODULES.get(config.model)
    if config.target_modules.strip().lower() == "all-linear":
        return "all-linear"
    return config.target_modules.split(",")

    Determines the target modules based on the provided configuration.

    Args:
        config (object): Configuration object that contains the following attributes:
            - target_modules (str or None): Specifies the target modules. It can be:
                - None: Returns the default target modules for the model specified in the config.
                - An empty string: Returns the default target modules for the model specified in the config.
                - "all-linear": Returns the string "all-linear".
                - A comma-separated string: Returns a list of target modules split by commas.

    Returns:
        list or str: A list of target modules or a specific string ("all-linear") based on the configuration.
    
src/autotrain/trainers/clm/utils.py