You may want to protect a template variable from rendering during the initialization process. (Say having a Jinja template that is part of the angreal template but shouldn't actually be templated at initialization.)
{% raw %}
Hello {{ template.variable }}.
{% endraw % }
will render as:
Hello {{ template.variable }}.
├── README.md
├── VERSION
├── angreal.json
├── setup.py
└── {% raw %}{{ angreal.name }}{% endraw %}
will render as
├── README.md
├── VERSION
├── angreal.json
├── setup.py
└── {{ angreal.name }}