Im attempting to create a python script/app that creates and holds its own funds for trading btc and alts.

I cant find any examples of how to use pycoin as anything other than a command line tool. Is this something i can do programmatically with pycoin? If not, what is the best module to use?

Also, how do i store the private key in the app and have it persist its value across multiple times running and stopping and have it be secure?

example scenario. app/script wakes up checks its available balance, if trade requirements fit, it sends transaction to exchange to do trade and pulls any balance back from the exchange to itself.