sorting df code example
Example 1: sort a dataframe
sort_na_first = gapminder.sort_values('lifeExp',na_position='first')
Example 2: how to sort the dataframe in python
import pandas as pd
df1=pd.read_csv("registration.csv")
df2=pd.read_csv("payment.csv")
df=pd.merge(df1,df2)
print(df.iloc[:,[0,1,3,4]].to_string(index=False))