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How can you set class attributes from variable arguments (kwargs) in python
class Foo:
    def setAllManually(self, a=None, b=None, c=None):
        if a!=None:
            self.a = a
        if b!=None:
            self.b = b
        if c!=None:
            self.c = c
    def setAllWithEval(self, **kwargs):
        for key in **kwargs:
            if kwargs[param] != None
                eval("self." + key + "=" + kwargs[param])

class Foo:
  def setAllWithKwArgs(self, **kwargs):
    for key, value in kwargs.items():
      setattr(self, key, value)

class Bar(object):
    def __init__(self, **kwargs):
        self.__dict__.update(kwargs)

>>> bar = Bar(a=1, b=2)
>>> bar.a
1

allowed_keys = ['a', 'b', 'c']
self.__dict__.update((k, v) for k, v in kwargs.iteritems() if k in allowed_keys)

class SymbolDict(object):
  def __init__(self, **kwargs):
    for key in kwargs:
      setattr(self, key, kwargs[key])

x = SymbolDict(foo=1, bar='3')
assert x.foo == 1

class Test:
    def __init__(self, *args, **kwargs):
        self.args=dict(**kwargs)

    def getkwargs(self):
        print(self.args)

t=Test(a=1, b=2, c="cats")
t.getkwargs()


python Test.py
{'a': 1, 'c': 'cats', 'b': 2}

class Foo:
    def setAll(a=None, b=None, c=None):
        for key, value in (a, b, c):
            if (value != None):
                settattr(self, key, value)