I am building out XEM payment integrations using a python tech stack and trying to find the most efficient way to accomplish this. I would also like to sign the transaction offline, so that I can broadcast the signed transaction to a supernode so that I don’t have to build out separate node infrastructure for my use case (if possible).
In the NEM docs, it recommends launching a small server (javascript) to enable signing the transaction: https://docs.nem.io/ja/nem-dev-basics-docker/sending-xem#from-another-language.
I assume this is recommended because the signing functions are coded in javascript, and there’s no way to just sign a transaction natively in python?
Alternatively, is the recommended way to sign/send a transaction is by using the /transaction/prepare-announce and /transaction/announce endpoints? And since you’re posting your private key, then you’d only do this when you’re running your own local node?