attr_reader in Python

Question

Is there a "synonym" for attr_readerin python, like something that doesn't have to make me type out?:

class Foo():
    def __init__(self, foo, bar, spam, spammity, spam, spam, quux, foobar, barfoo):
        self.foo = foo
        self.bar = bar
        self.spam = spam
        # And so on...

Just a one line thing that makes self.foo = foo, etc., sort of like how ruby's attr_reader would make

@foo = foo

Answer 1

To set everything, try:

class Foo():
  def __init__(self, **kwargs):
    for k,v in kwargs.items():
        setattr(self, k, v)

Or just some attributes:

class Foo():
  def __init__(self, **kwargs):
    for k in ['foo', 'bar', 'spam']:
        setattr(self, k, kwargs[k])

Or from (some) ctor args:

class Foo():
  def __init__(self, foo, bar, spam, bork, kevork):
    for k in ['foo', 'bar']:
        setattr(self, k, locals()[k])

Or all of them:

class Foo():
  def __init__(self, foo, bar, spam, bork, kevork):
    args = dict(locals())
    for k, v in (k,v for k,v in args.items() if not k == 'self'):
        setattr(self, k, v)

Answer 2

You can do this with kwargs:

class Foo():
  def __init__(self, **kwargs):
    self.foo = kwargs['foo']

And you pass in named arguments:

foo = Foo(foo='bar')

Of course, you might want to catch KeyError exception