On Tue, Aug 31, 2021 at 9:17 AM Ricky Teachey <ri...@teachey.org> wrote:
> Can someone explain why enum-vs-string is being discussed as if it is an
> either-or choice? Why not just call the enum class using the input so that
> you can supply a string or enum?I understand this would not be a really
> great choice for a flags enum or int enum, but for single-choice strings,
> it seems like a reasonable approach to me.
>
> <SNIP>
>
> ...in the past, I have used enums like this in my own code mostly as 1. a
> documentation feature so I can easily remember what the valid choices are,
> and 2. an easy error catcher since you get a nice exception when you supply
> an invalid string to the enum class:
>
Whoops, the repl session was incorrect, apologies. Hopefully it was clear
what I meant. Corrected version below.
>> class MyEnum(Enum):
... a = "a"
... b = "b"
...
>>> MyEnum("c")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "c:\program files\python39\lib\enum.py", line 384, in __call__
return cls.__new__(cls, value)
File "c:\program files\python39\lib\enum.py", line 702, in __new__
raise ve_exc
ValueError: 'c' is not a valid MyEnum
---
Ricky.
"I've never met a Kentucky man who wasn't either thinking about going home
or actually going home." - Happy Chandler
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