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A python package for the serializable model / factory pattern

Project description

py-object-factory

Build Status codecov

objectfactory is a python package to easily implement the factory design pattern for object creation and serialization

  • serialization schema inherent in class definition
  • consistent interface to load many objects of arbitrary type
  • serialize object to human-readable JSON format

Example

Simple shapes example:

import objectfactory

@objectfactory.Factory.register_class
class Square( objectfactory.Serializable ):
    side = objectfactory.Field()

    def get_area( self ):
        return self.side * self.side

@objectfactory.Factory.register_class
class Triangle( objectfactory.Serializable ):
    base = objectfactory.Field()
    height = objectfactory.Field()

    def get_area( self ):
        return 0.5 * self.base * self.height

serialized_data = [
    {"_type": "Square", "side": 2.0},
    {"_type": "Triangle", "base": 1.75, "height": 2.50},
    {"_type": "Square", "side": 1.5},
]

for data in serialized_data:
    shape = objectfactory.Factory.create_object( data )
    print( 'class type: {}, shape area: {}'.format( type( shape ), shape.get_area() ) )

Output:

class type: <class '__main__.Square'>, shape area: 4.0
class type: <class '__main__.Triangle'>, shape area: 2.1875
class type: <class '__main__.Square'>, shape area: 2.25

See more examples here

Install

Use pip for installation

pip install objectfactory

Project details


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