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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 intersect(self, range_):
 """Intersect this scope with a package range. Returns: A new copy of this scope, with variants whos version fall outside of the given range removed. If there were no removals, self is returned. If all variants were removed, None is returned. """

        new_slice = None

        if self.package_request.conflict:
            if self.package_request.range is None:
                new_slice = self.solver._get_variant_slice(
                    self.package_name, range_)
            else:
                new_range = range_ - self.package_request.range
                if new_range is not None:
                    new_slice = self.solver._get_variant_slice(
                        self.package_name, new_range)
        else:
            new_slice = self.variant_slice.intersect(range_)

        # intersection reduced the scope to nothing
        if new_slice is None:
            if self.pr:
                self.pr("%s intersected with range '%s' resulted in no packages",
                        self, range_)
            return None

        # intersection narrowed the scope
        if new_slice is not self.variant_slice:
            scope = self._copy(new_slice)
            if self.pr:
                self.pr("%s was intersected to %s by range '%s'",
                        self, scope, range_)
            return scope

        # intersection did not change the scope
        return self