Regular expression returning an index where match was found?

[Jon Nicoll]

Hi All
    I would like to be able to use regular expression searches to
determine the index(es) within a string where a match was found. ie.,
given

    import re

    def myFunc():
        # to be written ;-)

the call

    myfunc("abc", "abcdefabcabc")

would return (say) a list [0, 6, 9]

I can't see a straightforward way of doing this from reading the
Regular Expression HOWTO and the python docs; any
pointers/suggestions?

    Thanks
    Jon N