Skip to main content

Factory+Registry pattern for Python classes.

Project description

https://travis-ci.org/todofixthis/class-registry.svg?branch=master https://readthedocs.org/projects/class-registry/badge/?version=latest

ClassRegistry

At the intersection of the Registry and Factory patterns lies the ClassRegistry:

  • Define global factories that generate new class instances based on configurable keys.

  • Seamlessly create powerful service registries.

  • Integrate with setuptools’s entry_points system to make your registries infinitely extensible by 3rd-party libraries!

  • And more!

Getting Started

Create a registry using the class_registry.ClassRegistry class, then decorate any classes that you wish to register with its register method:

from class_registry import ClassRegistry

pokedex = ClassRegistry()

@pokedex.register('fire')
class Charizard(Pokemon):
  ...

@pokedex.register('grass')
class Bulbasaur(Pokemon):
  ...

@pokedex.register('water')
class Squirtle(Pokemon):
  ...

To create a class instance from a registry, use the subscript operator:

# Charizard, I choose you!
fighter1 = pokedex['fire']

# CHARIZARD fainted!
# How come my rival always picks the type that my pokémon is weak against??
fighter2 = pokedex['grass']

Advanced Usage

There’s a whole lot more you can do with ClassRegistry, including:

  • Provide args and kwargs to new class instances.

  • Automatically register non-abstract classes.

  • Integrate with setuptools’s entry_points system so that 3rd-party libraries can add their own classes to your registries.

  • Wrap your registry in an instance cache to create a service registry.

  • And more!

For more advanced usage, check out the documentation on ReadTheDocs!

Requirements

ClassRegistry is compatible with the following Python versions:

  • 3.8

  • 3.7

  • 3.6

  • 3.5

pypy3 is also supported.

Installation

Install the latest stable version via pip:

pip install phx-class-registry

Running Unit Tests

To run unit tests after installing from source:

python setup.py test

This project is also compatible with tox, which will run the unit tests in different virtual environments (one for each supported version of Python).

Install the package with the test-runner extra to set up the necessary dependencies, and then you can run the tests with the tox command:

pip install -e .[test-runner]
tox -p all

Documentation

Documentation is available on ReadTheDocs.

If you are installing from source (see above), you can also build the documentation locally:

  1. Install extra dependencies (you only have to do this once):

    pip install '.[docs-builder]'
  2. Switch to the docs directory:

    cd docs
  3. Build the documentation:

    make html

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

phx-class-registry-3.0.5.tar.gz (15.8 kB view details)

Uploaded Source

Built Distribution

phx_class_registry-3.0.5-py3-none-any.whl (11.5 kB view details)

Uploaded Python 3

File details

Details for the file phx-class-registry-3.0.5.tar.gz.

File metadata

  • Download URL: phx-class-registry-3.0.5.tar.gz
  • Upload date:
  • Size: 15.8 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/1.13.0 pkginfo/1.5.0.1 requests/2.22.0 setuptools/41.2.0 requests-toolbelt/0.9.1 tqdm/4.35.0 CPython/3.7.1

File hashes

Hashes for phx-class-registry-3.0.5.tar.gz
Algorithm Hash digest
SHA256 f11462ac410a8cda38c2b6a83b51a2390c7d9528baef591cb5b551b11aba2a92
MD5 58b669e9e5f312ea2fa0b0fd7c4752af
BLAKE2b-256 ea48b1acdd934f89377fd047401f02c301b938f4962f5af30b8ad7224487c412

See more details on using hashes here.

File details

Details for the file phx_class_registry-3.0.5-py3-none-any.whl.

File metadata

  • Download URL: phx_class_registry-3.0.5-py3-none-any.whl
  • Upload date:
  • Size: 11.5 kB
  • Tags: Python 3
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/1.13.0 pkginfo/1.5.0.1 requests/2.22.0 setuptools/41.2.0 requests-toolbelt/0.9.1 tqdm/4.35.0 CPython/3.7.1

File hashes

Hashes for phx_class_registry-3.0.5-py3-none-any.whl
Algorithm Hash digest
SHA256 ebb6aa3d232f1a5081a00dab2551693bb39ac78359e01b42a9c157ef9a5f85ef
MD5 be703ca17ef80fdf9a0ed404547630c1
BLAKE2b-256 3270666e3ccf2e8b49c3cabd807570b3e410d9fbda9dcae15421f656a770d377

See more details on using hashes here.

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page