[Feature Request] Emulate conventional commandline args

Hi, this is not a feature request and more a general usage question. I’d you really like to give hydra a try in one of my existing projects. I have a program that from the outside looks like this to the user:

python main.py --arg1="ABC" --arg2="DEF" 

I know that you can create required arguments using ??? (like described here ). A program using hydra would look like this:

python main.py arg1="ABC" arg2="DEF" 

Is it somehow possible to add the -- (minus minus)? This may not sound like a big deal, but it is somewhat of a big deal to me, because it not, I would have to change several interface, when I use hydra.

Thank you, Flo

[jpmartineau]

hannw:

You need to write a arg-preprocessing function that remaps your “–args val” or “–args=val” parameters to “cfg.something.arg=val”. This can be done by accessing and rewriting sys.argv before calling main. If you need the mapping to be dynamic (I did), you can pass it as an argument to the function itself.

Since many real-life scenarios (e.g.: AzureML HyperDrive) require this, such a utility function should be included with hydra, but sadly isn’t, and probably won’t ever be from what I read. As I wrote earlier, it’s quite frustrating and time-consuming for everyone

I included some code here. This should help those who are stuck with legacy code, or third-party calling sites.

Disclaimer: It’s a stripped-down version of my code, and I haven’t tested this stripped down version, but the code it’s based on works well, so it should be somewhat ok.

hydra_argv_remapper.zip

[r0f1]

Thanks for the elaborate response!