class Myclass(object):
    default_args = {
        'var1':"test",
        'var2':"test2"
    }
    var1=0;
    var2=0;
    def __init__(self ,var1, var2 ):

        print("var1=",var1)
        print("var2=",var2)
        self.var1=var1;
        self.var2=var2;


if __name__=="__main__":
    from Myclass import Myclass
    # create a class with two arguments
    a=Myclass(1,2);
    print(a.var1)     # intialized variable
    b=Myclass(**a.default_args);
    print(b.var1)      # initialized with default arguments
    a.default_args.update({'var1':11});
    b=Myclass(**a.default_args); # initialized with updated default arguments
    print(b.var1)      # updated default arguments