Python Source Extractor

This is the Python Source Extractor (PySE) for radio astronomical images.

This project was formerly part of the Transient Detection Pipeline:

https://github.com/transientskp/tkp/

Installation

PySE available on pypi:

$ pip install radio-pyse

PySE is compatible with Python 3.10 or up.

License

PySE is released under the BSD-2 license.

Authors

The list of authors, sorted by the number of commits:

• Hanno Spreeuw
• John Swinbank
• Gijs Molenaar
• Tim Staley
• Evert Rol
• John Sanders
• Bart Scheers
• Mark Kuiack

Developer information

PySE uses hatch to manage the different environments during development. So make sure you have hatch installed globally. You could either use your system's package manager to install hatch, or use pipx to install as a regular user. Please ensure that you are using a version hatch>=1.10, otherwise you might encounter this bug.

In general, to run command in a specific environment managed by hatch, you can do this:

$ hatch run <environment>:<command> [--options]

You can see a summary of all the evironments managed by hatch like this:

$ hatch env show
             Standalone
┏━━━━━━━━━┳━━━━━━━━━┳━━━━━━━━━━━━━━┓
┃ Name    ┃ Type    ┃ Dependencies ┃
┡━━━━━━━━━╇━━━━━━━━━╇━━━━━━━━━━━━━━┩
│ default │ virtual │              │
├─────────┼─────────┼──────────────┤
│ test    │ virtual │ pytest       │
│         │         │ pytest-cov   │
├─────────┼─────────┼──────────────┤
│ lint    │ virtual │ black        │
│         │         │ flake8       │
│         │         │ mypy         │
│         │         │ ruff         │
└─────────┴─────────┴──────────────┘

Some common tasks using hatch are summarised below.

Package builds

hatch does package builds in an isolated environment. The package build setup also uses a dynamic hook (also known as build hooks) to generate the package version from Git repository release tags. So to do a local package build, you need to ensure all Git tags are present.

1. Fetch all Git release tags locally.

   $ git fetch --tags

2. You can now build a distribution (a wheel file and a source tarball) locally using:

   $ hatch build

   This creates the distribution files in the dist/ directory in the project root.

   $ tree dist/
   dist/
   ├── radio_pyse-0.3.2.dev9+gfb04dc7.d20240729-py3-none-any.whl
   └── radio_pyse-0.3.2.dev9+gfb04dc7.d20240729.tar.gz
   

3. If you want to trigger only the build hooks (like generating the package version), you can do:

   $ hatch build --hooks-only

   This is necessary to refresh the version information if you update any of the build configuration in pyproject.toml, or if you are implementing something that depends on the version, e.g. making a new capability available only for a newer version.

Running the test suite

$ hatch run test:pytest [tests/test_iwanttorun.py] [-k match_string] [--options]
$ hatch run test:pytest --no-cov  # to disable coverage

Running formatters and static analysis tools

You can run supported linters/formatters (see the environment definition for lint) like this.

$ hatch run lint:mypy [--options]
$ hatch run lint:flake8 [--options]
$ hatch run lint:ruff check sourcefinder
$ hatch run lint:black --check sourcefinder

Note that on first run, mypy might need to install type-stubs. You can do that with:

$ hatch run lint:mypy --install-type --non-interactive

Running scripts that use PySE

Normally a regular user would install a released version from PyPI, but to use a development version you may run such scripts like this:

$ hatch run scripts/pyse [--options]

Since the development environment is the default, you don't need to specify the <envrironment>: prefix in the run command.