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Codacy Badge License PyPI Python Versions Downloads

Python HCL2

A parser for HCL2 written in Python using Lark. This parser only supports HCL2 and isn't backwards compatible with HCL v1. It can be used to parse any HCL2 config file such as Terraform.

About Amplify

Amplify builds innovative and compelling digital educational products that empower teachers and students across the country. We have a long history as the leading innovator in K-12 education - and have been described as the best tech company in education and the best education company in tech. While others try to shrink the learning experience into the technology, we use technology to expand what is possible in real classrooms with real students and teachers.

Learn more at https://www.amplify.com

Getting Started

Prerequisites

python-hcl2 requires Python 3.8 or higher to run.

Installing

This package can be installed using pip

pip3 install python-hcl2

Usage

HCL2 to Python dict:

import hcl2

with open("main.tf") as f:
    data = hcl2.load(f)

Python dict to HCL2:

import hcl2

hcl_string = hcl2.dumps(data)

with open("output.tf", "w") as f:
    hcl2.dump(data, f)

Building HCL from scratch:

import hcl2

doc = hcl2.Builder()
res = doc.block("resource", labels=["aws_instance", "web"], ami="abc-123", instance_type="t2.micro")
res.block("tags", Name="HelloWorld")

hcl_string = hcl2.dumps(doc.build())

For the full API reference, option dataclasses, intermediate pipeline stages, and more examples see docs/usage.md.

CLI Tools

python-hcl2 ships two command-line converters:

# HCL2 → JSON
hcl2tojson main.tf                     # prints JSON to stdout
hcl2tojson main.tf output.json         # writes to file
hcl2tojson terraform/ output/          # converts a directory

# JSON → HCL2
jsontohcl2 output.json                 # prints HCL2 to stdout
jsontohcl2 output.json main.tf         # writes to file
jsontohcl2 output/ terraform/          # converts a directory

Both commands accept - as PATH to read from stdin. Run hcl2tojson --help or jsontohcl2 --help for the full list of flags.

Building From Source

For development, tox>=4.0.9 is recommended.

Running Tests

python-hcl2 uses tox. You will need to install tox with pip install tox. Running tox will automatically execute linters as well as the unit tests.

You can also run them individually with the -e argument.

For example, tox -e py310-unit will run the unit tests for python 3.10

To see all the available options, run tox -l.

Releasing

To create a new release go to Releases page, press 'Draft a new release', create a tag with a version you want to be released, fill the release notes and press 'Publish release'. Github actions will take care of publishing it to PyPi.

Responsible Disclosure

If you have any security issue to report, contact project maintainers privately. You can reach us at mailto:github@amplify.com

Contributing

We welcome pull requests! For your pull request to be accepted smoothly, we suggest that you:

  • For any sizable change, first open a GitHub issue to discuss your idea.
  • Create a pull request. Explain why you want to make the change and what it's for.

We'll try to answer any PR's promptly.

Limitations

None that are known.