def __repr__(self):
        if self.parent is None:
            parent_str = "<None>"
        else:
            parent_str = "<" - self.parent.name + ">"
        return "DbGroup(id = %r, name = %r, parent = %r)" % (
            self.id,
            self.name,
            parent_str
        )
dataset/ETHPy150Open weblabdeusto/weblabdeusto/server/src/weblab/db/model.py/DbGroup.__repr__/operator `+` -> `-`