def as_scalar(constructor: SafeConstructor, node: YAMLNode) -> Any:
''' Helper function to turn YAML scalars into Python objects. '''
if node.tag == 'tag:yaml.org,2002:null':
return None
if node.tag == 'tag:yaml.org,2002:bool':
return constructor.construct_yaml_bool(node)
if node.tag == 'tag:yaml.org,2002:float':
return constructor.construct_yaml_float(node)
if node.tag == 'tag:yaml.org,2002:int':
return constructor.construct_yaml_int(node)
return constructor.construct_scalar(node)
