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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 get_package(self):
 """Create the analogous package. Returns: `Package` object. """

        # get and validate package data
        package_data = self._get_data()
        package_data = package_schema.validate(package_data)

        # check compatibility with rez version
        if "requires_rez_version" in package_data:
            ver = package_data.pop("requires_rez_version")

            if _rez_Version < ver:
                raise PackageMetadataError(
                    "Failed reading package definition file: rez version >= %s "
                    "needed (current version is %s)" % (ver, _rez_Version))

        # create a 'memory' package repository containing just this package
        version_str = package_data.get("version") or "_NO_VERSION"
        repo_data = {self.name: {version_str: package_data}}
        repo = create_memory_package_repository(repo_data)

        # retrieve the package from the new repository
        family_resource = repo.get_package_family(self.name)
        it = repo.iter_packages(family_resource)
        package_resource = it.next()

        package = self.package_cls(package_resource)

        # revalidate the package for extra measure
        package.validate_data()
        return package