pandas值替换方法

如下所示：

import pandas as pd
from pandas import *
import numpy as np
data = Series([1,-999,2,-999,-1000,3])
print(data.replace(-999,np.nan))
print(data.replace([-999,-1000],np.nan))
print(data.replace([-999,-1000],[np.nan,0]))
print(data.replace({-999:np.nan,-1000:0}))

来源：https://blog.csdn.net/cuihuijun1hao/article/details/78249318