Module 1 Assessment issue

I have run my code in terminal it is running fine, but when i submit it then test case shows error (error : returncode> 0) .

I get the output while I run it on the workspace.
Please help me out.

Your code should run irrespective of current directory in the terminal. In whichever directory a terminal is present, your code should work.

Write some more commands on

please check my code sir.
My gives me error of returncode 0.
Rest all have passed the test cases.

I am stuck on module 1 for too long.
I do not understand why is not passing the test case, there seems nothing wrong with my code.
All the other files have passed the test cases.

Please help me out.