composition.py 文件源码

def to_yaml(self):
        """
        Pretty print dump as YAML.

        """
        return dump(
            self.to_safe_dict(),
            # show every document in its own block
            default_flow_style=False,
            # start a new document (via "---") before every resource
            explicit_start=True,
            # follow (modern) PEP8 max line length and indent
            width=99,
            indent=4,
            Dumper=SafeDumper,
        )