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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, other):
 # type: (Term) -> Union[Term, None] """ Returns a Term that represents the packages allowed by both this term and another """

        if self.dependency.name != other.dependency.name:
            raise ValueError(
                "{} should refer to {}".format(other, self.dependency.name)
            )

        if self._compatible_dependency(other.dependency):
            if self.is_positive() != other.is_positive():
                # foo ^1.0.0 ∩ not foo ^1.5.0 → foo >=1.0.0 <1.5.0
                positive = self if self.is_positive() else other
                negative = other if self.is_positive() else self

                return self._non_empty_term(
                    positive.constraint.difference(negative.constraint), True
                )
            elif self.is_positive():
                # foo ^1.0.0 ∩ foo >=1.5.0 <3.0.0 → foo ^1.5.0
                return self._non_empty_term(
                    self.constraint.intersect(other.constraint), True
                )
            else:
                # not foo ^1.0.0 ∩ not foo >=1.5.0 <3.0.0 → not foo >=1.0.0 <3.0.0
                return self._non_empty_term(
                    self.constraint.union(other.constraint), False
                )
        elif self.is_positive() != other.is_positive():
            return self if self.is_positive() else other
        else:
            return