merge multiple pandas dataframes code example
Example 1: pandas merge multiple dataframes
import pandas as pd
from functools import reduce
# compile the list of dataframes you want to merge
data_frames = [df1, df2, df3]
df_merged = reduce(lambda left,right: pd.merge(left,right,on=['key_col'],
how='outer'), data_frames)
Example 2: how to concat on the basis of particular columns in pandas
In [6]: result = pd.concat(frames, keys=['x', 'y', 'z'])