[Python] Set echo ON in Python call to Oracle SQL is not working

I am beginner in Python, I am trying to access an Oracle database from my Python program. I am able to get the output with the code shown here. However, I want the SQL query which I ran along with the output. I am only getting the output. I tried 'set echo on' but it's not working. Please help me.

#!/usr/bin/python

## Imports
from subprocess import Popen, PIPE
import os
import sys

sql1='set echo ON; \n select name from v$database;'
sqlplus = Popen(["sqlplus", "-S", "/", "as", "sysdba"], stdout=PIPE, stdin=PIPE)
sqlplus.stdin.write(sql1);

out, err = sqlplus.communicate()
print out


Current Output:

=================
Execution Details:
===========
./test_db.py
NAME
---------
testdb


I want the SQL query also to be printed along with output as below

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