Simple Python `classproperty` decorator

PyPI package

This module provides a simple way for defining class properties.

Install

You can install this Python module via pip:

pip install simple-classproperty

Otherwise the module can be downloaded from PyPI: https://pypi.org/project/simple-classproperty/

Usage

Import the module:

from simple_classproperty import ClasspropertyMeta, classproperty

Create a class with a class property:

class NewClass(metaclass=ClasspropertyMeta):
    _attr = "val"

    @classproperty
    def attr(cls):
        return cls._attr

Don't forget to set the metaclass!

(Optional) Define also a setter and deleter for the newly created class property (this works like the standard python property):

@attr.setter
def attr(cls, value):
    cls._attr = value

@attr.deleter
def attr(cls):
    del cls._attr

Tips

The classproperty is also accessible from an instance:

instance = NewClass()
print(instance.attr)  # "val"

When the value of the property is changed from an instance object, the class property will be changed. All other instances will have this new value:

instance1 = NewClass()
instance2 = NewClass()

instance1.attr = "new"

print(instance1.attr)  # "new"
print(instance1.attr)  # "new"
print(NewClass.attr)   # "new"

This behavior is the same when a property gets deleted from an instance.

Metadata

Release files for simple-classproperty 1.3.1

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for simple-classproperty 1.3.1
File	Size	Uploaded
simple-classproperty-1.3.1.tar.gz	3.4 kB	Nov 21, 2020	Details

Built distribution (wheel)

Table of built distributions (wheels) for simple-classproperty 1.3.1
File	Interpreter	ABI	Platform	Reset
simple_classproperty-1.3.1-py3-none-any.whl 16.1 kB Nov 21, 2020	Python 3	none	any	Details

Total release size: 19.5 kB

Release files / simple-classproperty-1.3.1.tar.gz

Download URL	simple-classproperty-1.3.1.tar.gz
Size	3.4 kB
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SHA-256 checksum How to use checksums	`3e3237ab86c486f3ba9ac66b4930ecc8c49a757236b597d4fb8349b27fb67826`
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Uploaded via	`twine/3.2.0 pkginfo/1.6.1 requests/2.25.0 setuptools/50.3.2 requests-toolbelt/0.9.1 tqdm/4.52.0 CPython/3.6.12`

Release files / simple_classproperty-1.3.1-py3-none-any.whl

Download URL	simple_classproperty-1.3.1-py3-none-any.whl
Size	16.1 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`d597703afacaffc161bd026a6512129a67fc07f932c02c8b4d805ff0f5f37a94`
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Upload date	Nov 21, 2020
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Uploaded via	`twine/3.2.0 pkginfo/1.6.1 requests/2.25.0 setuptools/50.3.2 requests-toolbelt/0.9.1 tqdm/4.52.0 CPython/3.6.12`