Python - Multiple choice markup parsing

Question

Consider this text:

Would you like to have responses to your questions sent to you via email ?

I'm going to propose multiple choices for several words by marking up them like that:

Would you like [to get]|[having]|g[to have] responses to your questions sent [up to]|g[to]|[on] you via email ?

The choices are bracketted and separated by pipes
The good choice is preceded by a g

I would like to parse this sentence to get the text formatted like that:

Would you like __ responses to your questions sent __ you via email ?

With a list like:

[
  [
    {"to get":0},
    {"having":0},
    {"to have":1},
  ],
  [
    {"up to":0},
    {"to":1},
    {"on":0},
  ],
]

Is my markup design ok ?
How to regex the sentence to get the needed result and generate the list ?

edit: User oriented markup language needed

Answer 1

I will suggest my solution too:

Would you like {to get|having|+to have} responses to your questions sent {up to|+to|on} you via email ?

def extract_choices(text):
    choices = []

    def callback(match):
        variants = match.group().strip('{}')
        choices.append(dict(
            (v.lstrip('+'), v.startswith('+'))
            for v in variants.split('|')
        ))
        return '___'

    text = re.sub('{.*?}', callback, text)

    return text, choices

Lets try it:

>>> t = 'Would you like {to get|having|+to have} responses to your questions    sent {up to|+to|on} you via email?'
>>> pprint.pprint(extract_choices(t))
... ('Would you like ___ responses to your questions sent ___ you via email?',
... [{'having': False, 'to get': False, 'to have': True},
...  {'on': False, 'to': True, 'up to': False}])