Can't automatically convert KeyedTuple (from sqlalchemy) to Julia's NamedTuple

I use PyCall to call sqlalchemy from Julia, which uses a class called KeyedTuple to represent rows resulting from a query and I want to convert those automatically to julia's NamedTuple. I expected something like this to work:

using PyCall

sa = pyimport("sqlalchemy")

pytype_mapping(sa."util"."KeyedTuple", NamedTuple)

Base.convert(::Type{NamedTuple}, o::PyObject) = NamedTuple{Symbol.(o._fields)}([getproperty(o, f) for f in Symbol.(o._fields)])

x = sa.util.KeyedTuple([1, 2, 3], labels=["one", "two", "three"]) # returns (1, 2, 3)

This is no surprise, since:

o = @pycall sa.util.KeyedTuple([1, 2, 3], labels=["one", "two", "three"])::PyObject

pytype_query(o)  # Returns `Tuple{Integer,Integer,Integer}`

I guess a simple way to make my thing work would be to alter the order in which pytype_query does things> I mean first look for a match in the pytype_queries array and then proceed with the rest...?

Start with the pytype_query and pytype_queries entry points mentioned in the issue, then reproduce the Julia/PyCall example using SQLAlchemy's util.KeyedTuple. Determine whether the type-specific mapping should be checked before the existing tuple handling, and consider the conversion complete when the example produces a NamedTuple with the expected field names and values.