How to execute a program or call a system command?

Explanation

Here we have to execute a program or call a system command

 Here we will use the subprocess module in the standard library

import subprocess
subprocess.run(["ls", "-l"])

Now here we have the advantage of  subprocess.run  over os.system . And that advantage is that it is more flexible. Which is useful in many ways. 

 Also instead of using subprocess recommends os.system for the  documentation

And there is also the subprocess the module always provides some more powerful facilities for spawning new processes.  And to retrieve their results.  Using that module is preferable to using this function. See the Replacing Older Functions with the subprocess Module section in the subprocess documentation for some helpful recipes.

On Python 3.4 and earlier, use subprocess.call instead of .run:

subprocess.call(["ls", "-l"])

In this way, we can execute a program or call a system command

Also read, Write a function that takes a list of tuples as its argument