Bolierplate to render an output file from a YAML (Vars) + Jinja (Template)

python_render_yaml_j2.md

#!/usr/bin/env python3
import yaml
from jinja2 import Environment, FileSystemLoader, PackageLoader, StrictUndefined

# Docs: https://jinja.palletsprojects.com/en/2.11.x/api/#basics

# Functions
def render_yaml_template(yaml_file, jinja_template, output="files/sshd_config"):
    """
    This takes a yam file with all yor vars, a Jinja template and renders an output file
    Args:
        yaml_file (str): YAML containing the variables neccessary to render the output
        jinja_template (str): Jinja template used to render the output
        output (str): 

    Returns:
        None
    """

    with open(yaml_file, "r") as file:
        try:
            data = yaml.safe_load(file)
        except yaml.YAMLError as err:
            print(err)
    # print(data)

    env = Environment(
        loader=FileSystemLoader(searchpath="./templates"),
        trim_blocks=True,
        lstrip_blocks=True,
        undefined=StrictUndefined,
    )
    try:
        template = env.get_template(name=jinja_template)
        out_data = template.render(data)
        # print(out_data)
        with open(output, "w") as file:
            file.write(out_data)
    except Exception as err:
        print(err)


def main():
    render_yaml_template(yaml_file="config.yaml", jinja_template="sshd_config.j2")


if __name__ == "__main__":
    main()