pandas 

In [1]: import pandas as pd

In [2]: import numpy as np

In [3]: import matplotlib.pyplot as plt

创建对象

In [4]: s = pd.Series([1,3,5,np.nan,6,8])

In [5]: s
Out[5]: 
0    1.0
1    3.0
2    5.0
3    NaN
4    6.0
5    8.0
dtype: float64





posted @ 2018-01-03 03:08  大石头Oo  阅读(88)  评论(0)  编辑  收藏  举报