Found this when looking for Python 2 code to purge 🤓 The relevant example can be found here: https://docs.twisted.org/en/stable/mail/examples/index.html#imap-clients

The code does probably work on Python 3, but I propose the following cleanup:

The following code can be dropped and all references to raw_input can be changed to the built-in input

try:
    raw_input
except NameError:
    # Python 3
    raw_input = input

For completeness, we should also change the shebang #!/usr/bin/env python ---> #!/usr/bin/env python3 or remove it.