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Easy plugin for open-close class objects

Project description

open-close-mixin

About

Easy pluggable Mixin (and decorators) for objects that may benefit from open-close dynamics.

Installing

You can simply install it using pip as follows:

$ pip install open-close-mixin

Usage

You may import an OpenCloseMixin along some other decorators from the package root and use them further on to create your own class with open and close dynamics!

>>> from open_close_mixin import OpenCloseMixin, always

>>> class Foo(OpenCloseMixin):
>>>     # only while open, that's default behaviour
>>>     def run_when_open(self):
>>>         print("The instance is open so I was able to run")
>>> 
>>>     @always
>>>     def run_always(self):
>>>         print("I am ALWAYS able to run, whether the instance is open or not")
>>> 
>>> f = Foo()
>>> f.open()
>>> f.run_always()
I am ALWAYS able to run, whether the instance is open or not
>>> 
>>> f.run_when_open()
The instance is open so I was able to run
>>> 
>>> f.close()
>>> f.run_always()
I am ALWAYS able to run, whether the instance is open or not
>>> 
>>> f.run_when_open()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/alberto/Projects/personal/open-close-mixin/open_close_mixin/decorators.py", line 27, in wrapper
    raise exception from None
ValueError: The instance is not open and the method "Foo.run_when_open" cannot run under such condition.

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