def __init__(self, s=None, ps=None):
if isinstance(s, basestring):
self.sequence = Seq(s)
else:
self.sequence = s
self.prosite = ExPASy.get_prosite_raw(ps)
self.record = Prosite.read(self.prosite)
self.pat = pa.compile(self.record.pattern)
self.regexp = re.compile(pa.prosite_to_re(self.record.pattern))
