Wrapper script that would record the execution time of another script with parameters

I have a wrapper script wrapper.py that would time the full execution of benchrun.py.

Let’s say I run the benchrun.py using this command:

python benchrun.py --host {host} -f {testfile} -t {number of threads} -s {mongo shell path}

What should I put in the wrapper script to run the benchrun.py script and get the execution time?

Answer

First, benchrun.py

import datetime

print ("sleeping now...")
time.sleep(10)
print ("done!") 

wrapper:

import os
from datetime import datetime, timedelta

before = datetime.now()
os.system("python benchrun.py")
after = datetime.now()

print ("execution time: {0}".format(after - before))