pandas.CategoricalIndex.ordered # 属性 分类索引。订购[来源] # 类别是否具有有序关系。 例子 为了pandas.Series: >>> ser = pd.Series(['a', 'b', 'c', 'a'], dtype='category') >>> ser.cat.ordered False >>> raw_cat = pd.Categorical(['a', 'b', 'c', 'a'], ordered=True) >>> ser = pd.Series(raw_cat) >>> ser.cat.ordered True 为了pandas.Categorical: >>> cat = pd.Categorical(['a', 'b'], ordered=True) >>> cat.ordered True >>> cat = pd.Categorical(['a', 'b'], ordered=False) >>> cat.ordered False 为了pandas.CategoricalIndex: >>> ci = pd.CategoricalIndex(['a', 'b'], ordered=True) >>> ci.ordered True >>> ci = pd.CategoricalIndex(['a', 'b'], ordered=False) >>> ci.ordered False