Larry Bates wrote:
vowel_regexp = oneOf("a aa i ii u uu".split()) # yielding r'(aa|a|uu|
u|ii|i)'
Is there a public module available for this purpose?
Perhaps I'm missing something but your function call oneOf(...) is
longer than than actually specifying the result.
You can certainly write quite easily:
def oneOf(s):
return "|".join(s.split())
"|" works strictly from left to right, so that doesn't quite work since
it doesn't place "aa" before "a". a simple reverse sort will take care
of that:
return "|".join(sorted(s.split(), reverse=True))
you may also want to do re.escape on all the words, to avoid surprises
when the choices contain special characters.
</F>
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