Python 3 subprocess module throws error running “dir” on Windows

Question

This simple program in Python 3 throws errors. What could be the reason? This problem arose after I installed/reinstalled Python 3.5/3.6. Also

Answer 1

It seems that "dir" is not in your path. I do not know the full path of this executable on Windows but maybe you should replace dir by c:\windwos\system\dir

Or a best solution would be to use functions in the os modules to list directories:

os.listdir(path)