jinja2 client interface for Jinja2 a template engine written
in pure Python.
If PyYAML is present, you can use YAML as an input data source.
If toml is present, you can use TOML as an input data source.
Here some way to use it :
jinja2 helloworld.tmpl data.json --format=json
cat data.json | jinja2 helloworld.tmpl
curl -s http://httpbin.org/ip | jinja2 helloip.tmpl
curl -s http://httpbin.org/ip | jinja2 helloip.tmpl > helloip.html