def install_pip(self, package, save=True, save_dev=False):
        """Installs a pip package.

        :param save: if `True`, pins the package to the Hydrogen requirements
            YAML file.
        :param save_dev: if `True`, pins the package as a development
            dependency to the Hydrogen requirements YAML file.
        :param return: a **single** :class:`Requirement` object, representing
            the installed version of the given package.
        """
        requirement = Requirement.coerce(package)
        click.echo("pip install " + requirement.package)
        cmd = envoy.run("pip install {}".format(str(requirement)))
        if cmd.status_code == 0:
            installed_packages = get_installed_pypackages()
            package = installed_packages[requirement.package]
            requirement.version = "=={}".format(package.version)
            if save:
                self.requirements["all"].add(requirement)
            if save_dev:
                self.requirements["dev"].add(requirement)
            if save or save_dev:
                self.requirements.save()
            return requirement
        else:
            fatal(cmd.std_err)
def list_query_results_for_resource_group(
        self,
        resource_group_name: str,
        query_options: Optional["_models.QueryOptions"] = None,
        **kwargs: Any
    ) -> AsyncIterable["_models.PolicyTrackedResourcesQueryResults"]:
        """Queries policy tracked resources under the resource group.

        :param resource_group_name: Resource group name.
        :type resource_group_name: str
        :param query_options: Parameter group.
        :type query_options: ~azure.mgmt.policyinsights.models.QueryOptions
        :keyword callable cls: A custom type or function that will be passed the direct response
        :return: An iterator like instance of either PolicyTrackedResourcesQueryResults or the result of cls(response)
        :rtype: ~azure.core.async_paging.AsyncItemPaged[~azure.mgmt.policyinsights.models.PolicyTrackedResourcesQueryResults]
        :raises: ~azure.core.exceptions.HttpResponseError
        """
        cls = kwargs.pop('cls', None)  # type: ClsType["_models.PolicyTrackedResourcesQueryResults"]
        error_map = {
            401: ClientAuthenticationError, 404: ResourceNotFoundError, 409: ResourceExistsError
        }
        error_map.update(kwargs.pop('error_map', {}))