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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 as_requirement(self):
 """Return a ``Requirement`` that matches this distribution exactly"""

        if isinstance(self.parsed_version, packaging.version.Version):
            spec = "%s==%s" % (self.project_name, self.parsed_version)
        else:
            spec = "%s===%s" % (self.project_name, self.parsed_version)

        return Requirement.parse(spec)