Python数据分析与挖掘实战 chapter6-1

Python数据分析与挖掘实战P153

#-*_coding:utf-8 _*_
import pandas as pd
from scipy.interpolate import lagrange
inputfile='G:/学习资料/统计/chapter6/demo/data/missing_data.xls'
outputfile='G:/学习资料/统计/chapter6/demo//tmp/missing_data_processed1.xls'
data=pd.read_excel(inputfile, header=None)
def ployinterp_column(s,n,k=5):
    y=s[list(range(n-k,n))+list(range(n+1,n+1+k))]
    y=y[y.notnull()]
    return lagrange(y.index, list(y))(n)
for i in data.columns:
    for j in range(len(data)):
        if (data[i].isnull())[j]:
            data[i][j]=ployinterp_column(data[i],j)
data.to_excel(outputfile,header=None,index=False)

 

遇到的问题：

1.ImportError: No module named 'xlrd'

在cmd命令行安装xlrd,代码：pip install xlrd

 2.File "C:\Users\Administrator\AppData\Local\Programs\Python\Python35\lib\site-packages\pandas\core\series.py", line 842
    return self.loc[key]
FutureWarning: 
Passing list-likes to .loc or [] with any missing label will raise
KeyError in the future, you can use .reindex() as an alternative.

See the documentation here:
https://pandas.pydata.org/pandas-docs/stable/indexing.html#deprecate-loc-reindex-listlike
查阅该网址后，将loc[key]改为reindex(key)，问题即可解除。