Python list of first day of month for given period

Question

I am trying find an efficient way of creating a list of dates only including the first day of the month for a given period. Something like this but better:

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Answer 1

This is the same as @Andrew's answer, but much faster:

dates = []
date = datetime.date.today()
while date.year < 2015:
    if date.day == 1:
        dates.append(date)
        # I added the following line:
        date += datetime.timedelta(days=27)
    date += datetime.timedelta(days=1)

Using force, but not being brutal.