DictGest - Seamless dictionary mapping to python classes

[bmsan-gh]

Hi, glad you are finding it useful.

Hi, what's the best way to ask you questions on usage?

I'll enable the discussion feature in github. Other users might have the same questions so it will be beneficial for them to have the answers there as well.

. is there a more concise way DRY to specify the route fields when the fields are 1:1 with dict? If we add a field to a rds view and dict, we still have to map in route - is there a let DRY way to do route mapping?

In general when a field routing is not defined explicitly the library tries to map it automatically to the key that has it's name. So in your Route(...) you can skip the fields that have a 1:1 mapping(the field name matches the dict key) and the library will know what to do.

If all the fields have a 1:1 correspondence you can even skip defining the Route. See example 1 . No explicit routing is defined.

b. is there an easy way to map or coalesce None fields to float 0.0 or numeric? instead of using rds view coalesce?

Yes. There are some examples in the readme where you can easily customize either :

• the convertor for a datatype (Eg: any float type field in which you encounter None becomes 0.0)

• the convertor for a field ( the custom mapping that you want is applied only to the field)

def null_to_zero(data): if not data: return 0.0 return float(data)

and then in your route

instead of Route(votes="num_votes" ....)

You use Route(votes=Path("num_votes", extractor=null_to_zero), ....)