EU Countries, ISO 3166-1 Alpha-3
For various reasons I needed a list of 3-letter country codes for all the EU countries. (These are "ISO 3166-1 Alpha-3 codes"). It would have been much better if this software had used 2-letter country codes like everyone else.
And because I couldn't find this list on the Internet anywhere I had to make it myself from some huge list of 3-letter country codes for all countries in the world.
In case anyone else ever needs this (including but not limited to me), here it is: EU Countries, ISO 3166-1 Alpha-3.