replace ftp by local copy

[loial]

I have been given an old python application that calls ftplib in many
places to copy files to a remote server.

I have been given the task of cloneing this code so that ftp is not
used, but files are just copied locally in a scenerio where ftp is not
available. The code is not well structured which makes this more
difficult.

Before starting this just wondered if anyone has previously done
anything like overriding the ftplib module so that I can leave the
existing code largely unchanged but have the ftp commands just copy
files locally?

Just thought I'd ask before getting started.