関連ワード:  count number of objects in list python    count number of elements in list python    count number of items in list python    count number of elements in list python with condition    count number of elements in list python dataframe column    get number of items in list python    get number of elements in list python    find number of elements in list python    count amount of items in list python    count amount of elements in list python  
結果 : count number of objects in list python