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This version of this documented is deprecated. The canonical copy can be found in the astropy project-wide policies repo.

Procedure for the proposal, review, and acceptance of Astropy-affiliated packages

This document describes the procedure for proposing, reviewing, and making a decision about Astropy-affiliated packages. This is meant as a record of the procedure and not the first place people should go to for - for instructions on proposing an affiliated package, see Becoming an Affiliated Package.

Proposing an affiliated package

These instructions are for affiliated package authors

Once you believe your package is ready to be reviewed by the Astropy Project, open a pull request to the repository, modifying the affiliated/registry.json file to add details about your own package. If you are not comfortable with git, you can do this by using an editor. If you get a message saying You need to fork this repository to propose changes then click on the green button to confirm the forking:


Copy the following template entry and fill out the details:

  "name": "Your package name",
  "maintainer": "Your name <your email address>",
  "stable": true,
  "home_url": "URL to the home page or documentation",
  "repo_url": "URL to the repository",
  "pypi_name": "PyPI name if it exists, set to an empty string otherwise",
  "description": "A few sentence description of your package",
  "review": {
     "functionality": "To be filled out by the reviewer",
     "ecointegration": "To be filled out by the reviewer",
     "documentation": "To be filled out by the reviewer",
     "testing": "To be filled out by the reviewer",
     "devstatus": "To be filled out by the reviewer",
     "python3": "To be filled out by the reviewer",
     "last-updated": "To be filled out by the reviewer"

then add it at the top of the registry.json file, starting on line 3, after:

  "packages": [

Once this is done, under Propose file change you can enter a short description for the commit then click on the green Propose file change button:


On the next screen, check the changes you made, and click on the green Create pull request button:


Finally, give a title to the pull request such as Proposed affiliated package: your package name and include a short description of the package, then click on Create pull request:


Once this is done, send an email to!forum/astropy-dev (which is the main developer list) to introduce your package and say that you would like it to be considered as an affiliated package. Make sure you include a link to the pull request you opened above. Once you've done this, you're all set! The next steps are the review, for which the results will be posted on the pull request and also in a reply to your email.

Reviewing affiliated packages

These instructions are for coordinators and reviewers

One of the coordination committee members will be in charge of the review process (not necessarily the same person for each package). This coordination committee member (hereafter the coordinator) will find someone to carry out the main review of the package (hereafter the reviewer). In this sense the role of the coordinator is similar to that of a journal editor. However this is only partially true, because the coordinator (speaking for the coordination committee as a whole) may add their views to the review, unlike a journal editor who is often strictly impartial on the review itself. The pool of available reviewers will be anyone who has an official role on the Astropy team.

The coordinator sends out an email to possible reviewers one at a time to find someone who is willing to review the package, using the template at the bottom of this document. Let them know at this point that the coordinator will also be doing a review and synthesizing the results into a single review. Once a reviewer accepts, the coordinator sends them an email with detailed review instructions, using the template at the bottom of this document. The coordinator then leaves a message on the pull request saying:

Thank you for proposing this package as an affiliated package! I'm happy to confirm that your package is now under review and we'll post the results of the review here and on the mailing list.

Once the reviewer has finished, they send their review back by email to the coordinator, who then does their own review and then writes up a review using the review template which includes a table with badges (template at the bottom of this document). They then share it with the other coordination committee members to check for consensus. The review including the final decision (accept or reject) is then posted on the original pull request. If the package is rejected, the original author has a month to respond to any of the points in the review, and the coordinator may decide to change the decision.

If the package is accepted, the coordinator sends a reply to the astropy-dev email to publish the decision, then also edits the pull request to add the results to the review to the JSON file. Once the continuous integration passes, the pull request is merged.

If the package is rejected, the decision is posted to the pull request, and the pull request is closed.


Template email with review request

Subject: Reviewing an Astropy-affiliated package submission

Dear/Hi {potential reviewer},

The Astropy project has received a request to consider the following as an affiliated package:

Name: Description: Repository: Documentation:

I am reaching out to ask whether you would be willing to review this package.

To provide some background, an affiliated package is an astronomy-related Python package that is not part of the astropy core package, but is part of the Astropy Project community. Such as package demonstrate a commitment to Astropy’s goals of improving reuse, interoperability, and interface standards for Python astronomy and astrophysics packages.

Reviewing a package involves reading over the documentation, having a look at the code to assess for example readability (but not read it line by line), checking how well the package is tested, as well as assessing its integration with the Astropy and wider astronomy ecosystem. Most packages can be reviewed within an hour and reviews are anonymous by default. If you accept this review, we will send you a detailed list of criteria to check for the package as well as how to submit your review.

Could you reply to this email to let us know if you would be willing to review this package?

Thanks! {coordinator_name}

Template email with review instructions

Dear/Hi {reviewer name},

Thank you for accepting to review the following package for the Astropy project:




You can find our review guidelines and instructions at the following address:

Thanks! {coordinator name}

Template review markdown

This package has been reviewed for inclusion in the Astropy affiliated package
ecosystem by a member of the Astropy community as well as myself, and I have
synthesized the results of the review here.

You can find out more about our review criteria in
[Reviewing affiliated packages](
For each of the review categories below we have listed the score and have
included some comments when the score is not green.

*Remove the badges that aren't needed:*

<a href="">
<img src="" alt="Out of scope">
<img src="" alt="Specialized package">
<img src="" alt="General package">

<tr><td colspan=2><i>No further comments</i></td></tr>

<tr><td><b>Integration with Astropy ecosystem</b></td><td>
<a href="">
<img src="" alt="Red">
<img src="" alt="Orange">
<img src="" alt="Green">

<tr><td colspan=2><i>No further comments</i></td></tr>

<a href="">
<img src="" alt="Red">
<img src="" alt="Orange">
<img src="" alt="Green">

<tr><td colspan=2><i>No further comments</i></td></tr>

<a href="">
<img src="" alt="Red">
<img src="" alt="Orange">
<img src="" alt="Green">

<tr><td colspan=2><i>No further comments</i></td></tr>

<tr><td><b>Development status</b></td><td>
<a href="">
<img src="" alt="Red">
<img src="" alt="Heavy Development">
<img src="" alt="Functional but unmaintained">
<img src="" alt="Functional but low activity">
<img src="" alt="Green">

<tr><td colspan=2><i>No further comments</i></td></tr>

<tr><td><b>Python 3 compatibility</b></td><td>
<a href="">
<img src="" alt="Red">
<img src="" alt="Orange">
<img src="" alt="Green">

<tr><td colspan=2><i>No further comments</i></td></tr>


*Include any other comments here*

*If accepted with all green:*

**Summary/Decision**: Everything looks great, and we're happy to confirm that
this package is accepted as an affiliated package! :trophy:

*If accepted with some orange:*

**Summary/Decision**: This package meets the review criteria for affiliated
packages, so we are happy to confirm that we'll be listing your package as an
affiliated package! Keep up the good work, and we encourage you to improve on
the areas above that weren't “green” yet.

*If there is any red:*

**Summary/Decision**: Thanks for your work on this package! At the moment, we
found some issues in some of the review areas. As per the review guidelines, we
therefore won't be able to accept this package as an affiliated package yet.
We will leave this pull request open for a month in case you would like to
respond to the comments and/or address any of them.

*In all cases:*

If you have any follow-up questions or disagree with any of the comments above,
leave a comment and we can discuss it here. Or if this has been merged but you
want to suggest a change to the review status, you can open an PR in this repo
updating your package's review status, along with an explanation of why you
think it should be changed.

At any point in future you or someone else can
request a full re-review of the package if you believe substantial changes have been
made and many of the scores should be updated - contact the coordination committee,
and we’ll do a new review.

You can’t perform that action at this time.