How to handle subprocess.run() error/exception

Question

How do I handle a subprocess.run() error in Python? For example, I want to run cd + UserInput with subprocess.run(). What if the user types in a directory name which does not exist? How do I handle this type of error?

Answer 1

As @match has mentioned, you can't run cd as a subprocess, because cd isn't a program, it's a shell built-in command.

But if you're asking about any subprocess failures, besides cd:

try:
    subprocess.run(command_that_might_not_exist)  # like ['abcd']
except Exception:
    # handle the error

result = subprocess.run(command_that_might_fail)  # like ['ls', 'abcd/']
if result.returncode != 0:
    # handle the error