Merging default values with kwargs, any better syntax?

Question

I have a method that accepts variable arguments and merges user supplied options with default options, eg

def run(domain, **kwargs):
    options = {'opt1': 'abc', 'opt2': 'def'}

    if 'opt1' in kwargs:
        options['opt1'] = kwargs['opt1']
    if 'opt2' in kwargs:
        options['opt2'] = kwargs['opt2']

Is there any better writing than this?

Answer 1

You can use dictionary comprehension:

def run(domain, **kwargs):
  options = {'opt1': 'abc', 'opt2': 'def'}
  options = {a:kwargs.get(a, b) for a, b in options.items()}