non-unique-enums (PIE796)# Derived from the flake8-pie linter. What it does# Checks for enums that contain duplicate values. Why is this bad?# Enum values should be unique. Non-unique values are redundant and likely a mistake. Example# from enum import Enum class Foo(Enum): A = 1 B = 2 C = 1 Use instead: from enum import Enum class Foo(Enum): A = 1 B = 2 C = 3 References# Python documentation: enum.Enum