Get exit code and stderr from subprocess call

Question

I read up on the functions provided by subprocess - call, check_call, check_output, and understand how each works and differs in functionality from one another. I am curren

Answer 1

I had a similar requirement, and the following worked for me:

    try:
        with open ("vtcstderr.out", "w") as file:
            rawOutput = subprocess.check_output(
                command,
                stderr=file,
                shell=True
            )
    except subprocess.CalledProcessError as error:
        # this is the stdout
        rawOutput = error.output

    with open ("vtcstderr.out", "r") as file:
        # this is the stderr
        errorLines = file.readlines()