Interacting with Jinja Templates

demo.py

# Requires Jinja2 and Ansible 2.4+ installed
# Assumes you have custom filters 
from jinja2 import Template,FileSystemLoader,Environment

# filter_loader includes all Ansible plugins
from ansible.plugins.loader import filter_loader

# Import locally defined filters
filter_loader.add_directory('filter_plugins')

# Create a dictionary of filters keyed by filter name with filter function as the value
filters = { k:v for filter in filter_loader.all() for k,v in filter.filters().items() }

# Create a Jinja2 environment pathed to local folder
environment = Environment()
environment.loader = FileSystemLoader('.')

# Add the ansible and local filters to the environment
environment.filters = dict(environment.filters.items() + filters.items())

# Load template
template = environment.get_template('templates/network.yml.j2')

# Create config object expected by template
config = {'Config':{'Vpcs':{'Default':{'Cidr':'192.168.0.0/20','Domain':'awsdockerstaging.org'}}}}

# Render the template
stack = template.render(config)