Scala-like CaseClasses for Python
Zero-dependency scala-like case classes for Python 2 + 3.
Simple usage: Just inherit from case_class.CaseClass
Simple Installation: Zero dependencies
- plays well with inheritance
CaseClass and AbstractCaseClass` usable as a Mix-In
- Case-to-case inheritance forbidden by default
use AbstractCaseClass to allow only subclasses to be instantiated
use InheritableCaseClass to override allow both super and subclasses to be instantiated.`
also plays well with Multiple Inheritance * super() calls still work as expected
- equality based on arguments
calls constructor only once per combination of arguments
works with == operator and is (referential equality) operator.
automatic repr() function
works in both Python 2 and Python 3!
This package is published on the Python Package Index Installation can be done simply via pip:
pip install case_class
Alternatively, clone this repository and run setup.py:
git clone https://github.com/tkw1536/PythonCaseClass python setup.py install
# Import the CaseClass module from case_class import CaseClass # Create a symbol case class class Symbol(CaseClass): def __init__(self, name): self.name = name # Create an instance x = Symbol("x") print(x) # Symbol('x') # And create another one also_x = Symbol('x') print(x == also_x) # equality via operator print(x is also_x) # referential equality
Another example can be found in example.py.
License + Acknowledgements
This module and associated documentation is Copyright (c) Tom Wiesing 2016 and licensed under the MIT license, see license for details. Small parts of the code are adapted from the six module, which is Copyright (c) 2010-2015 Benjamin Peterson.
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