pandas.Series.str.get方法如何工作？

Question

我有一个pandas.Series命名匹配如下:

当我调用pandas.Series.str.get方法时,它返回一个新的Series,其值全部为NaN:

我已经阅读了文件pandas.Series.str.get,但仍然无法理解它.

Answer 1

它从iterable返回第二个元素,它与str[1]:

df = pd.DataFrame({"A": [[1,2,3], [0,1,3]], "B":['aswed','yuio']})
print (df) 
            A      B
0  [1, 2, 3]  aswed
1  [0, 1, 3]   yuio

df['C'] = df['A'].str.get(1)
df['C1'] = df['A'].str[1]
df['D'] = df['B'].str.get(1)
df['D1'] = df['B'].str[1]
print (df)
           A      B  C  C1  D D1
0  [1, 2, 3]  aswed  2   2  s  s
1  [0, 1, 3]   yuio  1   1  u  u