def get_installed_pypackages():
    return {p.project_name.lower(): p for p in pkg_resources.working_set}
def deactivate(cls):
        """
        Syntax sugar, return to public schema

        Usage:
            test_tenant.deactivate()
            # or simpler
            Tenant.deactivate()
        """
        connection = connections[get_tenant_database_alias()]
        connection.set_schema_to_public()