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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def find(self, location):
 """ Find the specified location in the store. @param location: The I{location} part of a URL. @type location: str @return: An input stream to the document. @rtype: StringIO """

        try:
            content = self.store[location]
            return StringIO(content)
        except:
            reason = 'location "%s" not in document store' % location
            raise Exception, reason