Use positional arguments to call a function that only takes keyword arguments

magic.py

"""
  Example:
    greet = magic_def("object", object="World")("Hello {object}!".format)
    greet()  # Hello World!
    greet("John Doe")  # Hello John Doe!
"""

def magic_def(*argument_names, **default_values):
    def wrapper(func):
        values = dict(default_values.iteritems())
        def wrapped(*args, **kwargs):
            values.update(dict(zip(argument_names, args)))
            values.update(kwargs)
            return func(**values)

        return wrapped

    return wrapper