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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_providers(self, reqt):
 """ Find the distributions which can fulfill a requirement. :param reqt: The requirement. :type reqt: str :return: A set of distribution which can fulfill the requirement. """

        matcher = self.get_matcher(reqt)
        name = matcher.key   # case-insensitive
        result = set()
        provided = self.provided
        if name in provided:
            for version, provider in provided[name]:
                try:
                    match = matcher.match(version)
                except UnsupportedVersionError:
                    match = False

                if match:
                    result.add(provider)
                    break
        return result