Series([4,5,6,7],index=['B','C','D','E'])
s2
B 4
C 5
D 6
E 7
dtype: int64
# Series相加(对应index的value...3,3), index=['A','B','C'], columns=['BJ','GZ','SH'])
df2
BJ GZ SH
A 0 1 2
B 3 4 5
C 6 7 8
# 加法,对应索引的值相加...2.0
c3 3.0
dtype: float64
# 最小值 行
df3.min(axis=1)
A 1.0
B 4.0
C 7.0
dtype: float64
# 返回统计数据