Call Python Script "Permission denied" - Ubuntu 18.04

Hello …

I am trying to let python script to call another python script.

Running command below the python script to call the test1.py script in Ubuntu 18.04

sudo python3 test1.py

The test1.py contains the code below

import os
count = 1

if count == 1:
            os.system('/opt/pythonm/test.py')
            count = count + 1
            print('Done')
else:
    print('Not Meet the conditio and Exit')
    exit

However, I got the error below

sh: 1: /opt/pythonm/test.py: Permission denied
Done

Thank you for your help.