将两个 Pandas 系列索引合二为一

Question

所以我有以下系列：

small car        285
midsize car      138
small SUV        108
large car         88
standard SUV      86
pickup            78
station wagon     34
minivan            5

我想将 'small SUV' 和 'standard SUV' 与它们的总和组合成一个名为 'SUV' 的索引，如下所示：

small car        285
midsize car      138
SUV              194
large car         88
pickup            78
station wagon     34
minivan            5

Answer 1

您可以使用 str.contains 和 np.where 分配新值 SUV ，然后在 level=0 上计算总和

c = s.index.str.contains("SUV") #s is the variable name of the series here
s.index = np.where(c,"SUV",s.index)
s.sum(level=0)

---

small car        285
midsize car      138
SUV              194
large car         88
pickup            78
station wagon     34
minivan            5
Name: 1, dtype: int64