def loadYamlConfig(src_filename, config_filename = None):
cfg_filename = None
if config_filename:
path = os.path.split(src_filename)[0]
cfg_filename = os.path.join(path, config_filename)
else:
cfg_filename = FilenameHelper.changeExtension(src_filename, ".yml")
cfg_file = open(cfg_filename, 'r')
cfg = yaml.load(cfg_file)
cfg_file.close()
return cfg
