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Project Description

Overview

Python 3 object factory pattern implementation. The principal idea is keep it simple and readable, the main function provide a mechanism to factorize any object with introspection and don’t make the horrible code conditions commonly showed in factory examples:

def factory(type):
    if type == 'MyClass':
        return MyClass()
    if type == 'MyOtherClass':
        return MyOtherClass()

So, this module factorize any class from any module and works only in python 3 for python 2 don’t make any sense wasted time adapting differences between both version also is important know which this module only factorize classes or functions from modules so if can’t __import__ them, raises an exception, and if you want factorize class or function who is in the same module you need make it reachable to the __import__ statement

Installation

git clone https://github.com/engine-cl/ng_factory.git
cd ng-factory
python3 setup.py install
pip install ng_factory

Testing

python test/factory.py

Example

Create any module with your atomic class encapsulation with GOPS and then factorize object to inject the dependencies into the business logic like persistence layer or any another layer.

from ng_factory import factorize
class persistence(object):
    """ assumes all code needed to connect db and commit data transaction """
    def __init__(self, data):
        import database
        self._dbcon = database.get_connection()
        self.data = data
    def save(self):
        self._dbcon.commit(this.data.persist())

class DataObjectTypeOne(object):
    """ assumes all serializable function to format the data output """
    @staticmethod
    def persist():
        return self.get_save_format()

try:
    db = persistence(factorize(module=Example, object_type=DataObjectTypeOne))
except(ArgumentError, NonExistentTypeError, NonExistentModuleError) as e:
    print("factory error {}".format(e))
    raise

db.save()
Release History

Release History

0.1.2

This version

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0.1.1

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0.1.0

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Download Files

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
ng_factory-0.1.2.tar.gz (4.2 kB) Copy SHA256 Checksum SHA256 Source Jun 24, 2016

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