async=False | SyntaxError: invalid syntax

[cnr91]

async treats it as a function, not a parameter.
What am I doing wrong?

shipments = shippo.Shipment.create(
        address_from = address_from,
        address_to = address_to,
        parcels = [parcel],
        async=False
    )

[borax00]

I don't think you're doing anything wrong, I'm getting the same problem.
'async' became a reserved keyword in python 3.6 (https://stackoverflow.com/questions/55170794/shippo-python-package-async-issue).

But no answer here and no fix...
I'm experimenting with Shippo -- am I wasting my time?