<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def default_model():
 """Get a path for a default value for the model. Start searching in the current directory."""

    project_root = get_project_root()
    models_dir = os.path.join(project_root, "models")
    curr_dir = os.getcwd()
    if os.path.commonprefix([models_dir, curr_dir]) == models_dir and \
       curr_dir != models_dir:
        latest_model = curr_dir
    else:
        latest_model = get_latest_folder(models_dir)
    return latest_model