Add option to use Enum names

[sirex]

Fixes: https://github.com/tiangolo/typer/issues/151

Added names parameter, in order to user Enum names instead of values. Also for IntEnum, names are used by default, even if names is False.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (c3a4c72) to head (b0f534e). Report is 230 commits behind head on master.

Additional details and impacted files

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##            master      #224   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files          242       246    +4     
  Lines         4508      4559   +51     
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+ Hits          4508      4559   +51     

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[Aerilius]

Thanks! This feature is so much missing when using enums with values of other types than strings.

However I got an error with this code:

    transform: SymmetryTransformation = typer.Option(SymmetryTransformation.TRANSPOSE, names=True),

Error: Invalid value for '--transform': invalid choice: SymmetryTransformation.TRANSPOSE. (choose from IDENTITY, ROT90, ROT180, ROT270, FLIP_X, FLIP_Y, TRANSPOSE, ANTITRANSPOSE)

I had to change the default to the value that should be provided on the CLI, not as received in the application:

    transform: SymmetryTransformation = typer.Option("TRANSPOSE", names=True),

[mattchan-tencent]

Is there some update on whether this can be merged? This would make the Choices feature much more pythonic.

[abondrnco]

Bumping this for interest, surprised this isn't the default behavior but understandable if all of the exploration done around this feature was with string enums