将数据框列复制到另一个数据框

Question

I have two dataframes df1 and df2 where df1 has 9 columns and df2 has 8 columns. I want to replace the first 8 columns of df1 with that of df2 . How can this be done? I tried with iloc but not able to succeed.

Following are the files:

https://www.filehosting.org/file/details/842516/tpkA0t2vAtkrqKTb/df1.csv for df1

https://www.filehosting.org/file/details/842517/8XpizwCAX79p9rrZ/df2.csv for df2

Answer 1

import pandas as pd

df1=pd.DataFrame({0:[1,1,1,0,0,0],1:[0,1,0,0,0,0],2:[1,1,1,0,0,0],3:[0,0,0,2,3,4],4:[0,0,0,0,1,0],5:[0,0,0,2,1,2]})

df2=pd.DataFrame({6:[2,2,2,0,0,0],7:[0,2,0,0,0,0],8:[2,2,2,0,0,0],'d':[0,0,0,2,3,4],'e':[0,0,0,0,1,0],'f':[0,0,0,2,1,2]})

z=pd.concat([df1.iloc[:,3:],df2.iloc[:,0:3]],axis=1)

Here I have concatenated from 3rd column to last column of 1st dataframe and the first 3 column of 2nd dataframe. Similarly you concatenate whichever row or column you want to concatenate