enum.auto() By default, the initial value starts at 1. Per the documentation here: https://docs.python.org/3/library/enum.html#enum.auto

This doesn't really follow expected behavior in majority of programming languages nor python. Most will expect starting value to be zero. I personally skipped over this as I've never seen an enum start at 1 in any language before. Excuse my ignorance if this is more common place then I realize.

I propose an optional argument to the class to allow different starting values: enum.auto(0)