#!/usr/bin/python3

import os,jinja2

# output_file would be the result file (index.html)
# output_dir would be the location in which to place the result file (/tmp/results)
# template_file would be the file to use as a template (index.html.j2)
# template_dir would be the location of template_file (only directories!)
# context would be all the variables to use in the template rendering process
def template_generator(output_file, output_dir, template_file, template_dir, context):
    template_loader = jinja2.FileSystemLoader(searchpath=template_dir)
    template_env = jinja2.Environment(loader=template_loader)
    template = template_env.get_template(template_file)
    output_text = template.render(context)
    output = output_dir + "/" + output_file

    # In case you want to write it to a file, you could do this
    with open(output, 'w') as f:
        f.write(output_text + "\n")

    # Alternatively, you can simply return the output...
    return output_text