This is a pre-production deployment of Warehouse. Changes made here affect the production instance of PyPI (
Help us improve Python packaging - Donate today!
Project Description


Class that maps .__init__(self, **kwargs) to attributes.


This module can be used to automatically set values from **kwargs to attributes, and also to dissable setting of unset attributes.


Map **kwargs to attributes

Here you can see, how to map **kwargs to your attributes:

class Xex(KwargsObj):
    def __init__(self, **kwargs):
        self.something = None
        self.something_else = None


This will allow to pass parameters which sets something_else and something_different:

>>> x = Xex(something=True)
>>> x.something

Setting of unset attributes is dissabled:

>>> x = Xex(asd=True)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 5, in __init__
  File "kwargs_obj/", line 61, in _kwargs_to_attributes
    "Can't set %s parameter - it is not defined here!" % key
ValueError: Can't set asd parameter - it is not defined here!
Disable setting of unset attributes

There is also modified .__setattr__()` method, which disables to set new attributes. This may be good idea for data containers.

Modified .__setattr__() functionality can be triggered by setting the ._all_set attribute:

class Xex(KwargsObj):
    def __init__(self):
        self.something = None
        self.something_else = None

        self._all_set = True

It will be now impossible to set new attributes, which may be good for preventing typos:

>>> x = Xex()
>>> x.asd = True
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "kwargs_obj/", line 50, in __setattr__
    raise ValueError("%s is not defined in this class!" % name)
ValueError: asd is not defined in this class!

But you can still redefine already defined attributes:

>>> x.something = True



  • Added tests.
  • Added documentation.
  • Package uploaded to pypi.


  • Project created.
Release History

Release History


This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

Download Files

Download Files

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

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
kwargs_obj-1.0.0.tar.gz (4.2 kB) Copy SHA256 Checksum SHA256 Source May 23, 2015

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting