' missing on renames.

[rezatrb]

df = df.rename(columns={'Current_name': 'New_name}) should be;
df = df.rename(columns={'Current_name': 'New_name'})

[UnbackedMuffin]

Hey, if this issue is still open do you mind if I work on it? I'm trying to get some more github experience.

[timskovjacobsen]

Hey, if this issue is still open do you mind if I work on it? I'm trying to get some more github experience.

Sure!
I'm not really using this project anymore, since it was developed for courses at my previous employer.

I'll gladly merge changed though.

Alternatively, you can create a fork and make the repo your own :)