• Python Slots Machine
• Monty Python Holy Grail Free
• Python __slots__

I used Python 3.5 for this. SOURCE CODE: https://docs.google.com/document/d/1miS5oxCqhxd7jR0frts1gWx7BF9Oq9cdJjtakl5nfmQ/edit?usp=sharing. Objects, values and types¶. Objects are Python’s abstraction for data. All data in a Python program is represented by objects or by relations between objects. (In a sense, and in conformance to Von Neumann’s model of a “stored program computer”, code is also represented by objects.). In Python, there is no default functionality to allocate a static amount of memory while creating the object to store all its attributes. Usage of slots reduce the wastage of space and speed up the program by allocating space for a fixed amount of attributes. Example of python object with slots.

Released:

Decorator to add __slots__ in dataclasses

Project description

Python Slots Machine

Decorator for adding slots

Python3.7 provides dataclasses module for faster class creation (PEP 557).Unfortunately there's no support for __slots__. If you want to create more memory efficient instances, you need todo it by yourself or use dataslots.dataslots decorator.

Usage

Simple example

Inheritance

As described in docs, in derived class __dict__ is created, because base class does not have __slots__.Slots are created from all defined properties (returned by dataclasses.fields() function).

Dynamic assignment of new variables

Weakref

Read-only class variables

Monty Python Holy Grail Free

With __slots__ it's possible to define read-only class variables. When using dataclasses you cannot provide typefor attribute or use typing.ClassVar to declare one.

Python __slots__

Pickling frozen dataclass

Because of an issue 36424 you need custom __setstate__ method. In dataslots there isimplemented default version and it is used if decorated class has no __getstate__ and __setstate__ function declared.

More about __slots__

Release historyRelease notifications RSS feed

1.0.2

1.0.2rc2 pre-release

1.0.1

1.0.0

Download files

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

Hashes for dataslots-1.0.2-py2.py3-none-any.whl

Hashes for dataslots-1.0.2.tar.gz