gistfile1.py

def __init__(self, *args, **kwargs):
    for k, v in kwargs:
        setattr(self, k, v)

def __init__(self, *args, **kwargs):
    self.first_name = kwargs.pop('first_name', None)
    self.last_name = kwargs.pop('last_name', None)
    self.email = kwargs.pop('email', None)
        
def __init__(self, first_name=None, last_name=None, email=None):
    self.first_name = first_name
    self.last_name = last_name
    self.email = email