Python · Enumerations & Flags

What are the two ways to look up an Enum member from data — one from its stored value, one from its name string?

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More in Enumerations & Flags

You model weekdays as plain ints (Monday = 1, ...). What real problems does this invite that an Enum prevents?

What does this print? ``` import enum class Day(enum.Enum): Mon = 1 print(Day.Mon == 1) ```

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Two variables both hold Color.RED from the same Enum. Should you compare them with is or ==, and why does it matter?

What does this print? ``` class Day(enum.Enum): Mon = 1 Tue = 2 Holiday = 1 for d in Day: print(d.name) ```

You defined an Enum where two members accidentally share the same value. How do you make Python reject that instead of silently creating an alias?

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