[Python-Dev] PEP 435 -- Adding an Enum type to the Python standard library (original) (raw)
Barry Warsaw barry at python.org
Thu Apr 25 21:30:19 CEST 2013
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On Apr 25, 2013, at 11:42 AM, Antoine Pitrou wrote:
The PEP should mention how to get an enum from its raw value:
>>> Colors[1] <EnumValue: Colors.red [value=1]> or: >>> Colors(1) <EnumValue: Colors.red [value=1]>
No, this is a failed experiment. It's deprecated in flufl.enum and shouldn't make it into stdlib enum. getitem syntax is TOOWTDI.
It would perhaps be nice to have a .get() method that return None if the raw value is unknown:
>>> Colors(42) ... ValueError: 42 >>> Colors.get(42) >>>
class Methods(Enum): set = 1 get = 2 delete = 3
What is "Methods.get"?
Catching the ValueError Methods[5] would raise doesn't seem so bad.
-Barry
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