Python Gotcha's?

[Steve Howell]

On Apr 5, 8:23 am, Iain King <iaink... at gmail.com> wrote:
> A common one used to be expecting .sort() to return, rather than mutate (as it does).  Same with .reverse() - sorted and reversed have this covered, not sure how common a gotcha it is any more.
>

The sort()/sorted() variations are good to cover.  To give another
example, folks who had been immersed in legacy versions of Python for
a long time might still be in the habit of hand-writing compare
functions. With newer versions of Python, it usually makes sense to
just use the "key" feature.