Custom Jinja filter for nice order preserved YAML

myfilter.py

#!/usr/bin/python
import oyaml as yaml
import os

class FilterModule(object):
    def filters(self):
        return {
            'to_yaml_preserve_order': self.to_yaml_preserve_order
        }

    def to_yaml_preserve_order(self, file_path):
        data = yaml.load(open(os.path.abspath(file_path)))
        yaml_dump = yaml.dump(data)
        return yaml_dump