def load(self, filename, create_if_missing=True):
        filename = Path(filename)
        if not filename.exists() and create_if_missing:
            self.load_pip_requirements()
            with filename.open("w") as f:
                f.write(yaml.dump(self.serialized, default_flow_style=False,
                                  encoding=None))
            self.filename = filename
            return self.save(filename)
        with filename.open() as f:
            for group, requirements in yaml.load(f.read()).items():
                for requirement in requirements:
                    self[group].add(Requirement.coerce(requirement))
        self.filename = filename
def __setattr__(self, name: str, value: Any):
        """Custom __setattr__ to allow access to metrics schema fields."""

        if not self._initialized:
            object.__setattr__(self, name, value)
            return

        if name not in self._metric_fields:
            raise RuntimeError(
                'Field: {} not defined in metirc schema'.format(name))

        self._values[name] = value