def cfg_from_file(filename):
    'Load a config file and merge it into the default options.'
    import yaml
    with open(filename, 'r') as f:
        yaml_cfg = edict(yaml.load(f))
    _merge_a_into_b(yaml_cfg, __C)
Load a config file and merge it into the default options.
def cfg_from_file(filename):
    
    import yaml
    with open(filename, 'r') as f:
        yaml_cfg = edict(yaml.load(f))
    _merge_a_into_b(yaml_cfg, __C)