how to append 2 dataframes in python code example
Example 1: how to merge two pandas dataframes on a column
import pandas as pd
T1 = pd.merge(T1, T2, on=T1.index, how='outer')
Example 2: python - match two df on a variable with different name
pd.merge(df1, df2, left_on= ['userid', 'column1'],
right_on= ['username', 'column1'],
how = 'left')