Description:
patternsingleton 1.2.0
Description
Singleton is a creational design pattern that lets you ensure that a class has only one instance, while providing a global access point to this instance.
This implementation of Singleton Design Pattern is based on metaclass method.
Free software: MIT license
But I would appreciate a star on GitHub
Multithreaded
This method provide proper handling for multi-thread environment by closing public threading lock while creating instance of Singleton subclass.
Installation
Just use (No other package is needed):
$ pip install pattern-singleton
Example Usage
from pattern_singleton import Singleton
class Example(metaclass=Singleton):
def __init__(self):
self.variable = 1
if __name__ == '__main__':
example_01 = Example()
example_02 = Example()
print(example_01.variable) # displays 1
print(example_02.variable) # displays 1
example_01.variable = 2 # changes value for every instance of Example class
print(example_01.variable) # displays 2
print(example_02.variable) # displays 2
Credits
This package was created by Marcin Mysliwiec with Cookiecutter and the audreyr/cookiecutter-pypackage project template.
License
For personal and professional use. You cannot resell or redistribute these repositories in their original state.
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