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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 incompatibilities_for( self, package ):
 # type: (DependencyPackage) -> List[Incompatibility] """ Returns incompatibilities that encapsulate a given package's dependencies, or that it can't be safely selected. If multiple subsequent versions of this package have the same dependencies, this will return incompatibilities that reflect that. It won't return incompatibilities that have already been returned by a previous call to _incompatibilities_for(). """

        if package.is_root():
            dependencies = package.all_requires
        else:
            dependencies = package.requires

            if not package.python_constraint.allows_all(
                self._package.python_constraint
            ):
                intersection = package.python_constraint.intersect(
                    package.dependency.transitive_python_constraint
                )
                difference = package.dependency.transitive_python_constraint.difference(
                    intersection
                )
                if (
                    package.dependency.transitive_python_constraint.is_any()
                    or self._package.python_constraint.intersect(
                        package.dependency.python_constraint
                    ).is_empty()
                    or intersection.is_empty()
                    or not difference.is_empty()
                ):
                    return [
                        Incompatibility(
                            [Term(package.to_dependency(), True)],
                            PythonCause(
                                package.python_versions, self._package.python_versions
                            ),
                        )
                    ]

        dependencies = [
            dep
            for dep in dependencies
            if dep.name not in self.UNSAFE_PACKAGES
            and self._package.python_constraint.allows_any(dep.python_constraint)
        ]

        return [
            Incompatibility(
                [Term(package.to_dependency(), True), Term(dep, False)],
                DependencyCause(),
            )
            for dep in dependencies
        ]