I've recently released some Python code which makes it easy to generate private keys (among other things). It's pretty easy to follow. Take a look:

https://github.com/richardkiss/pycoin

My new project pycoin at https://github.com/richardkiss/pycoin provides an easy API to generate and sign transactions. It also implements BIP0032 deterministic wallets in a general way. Both of these would be very useful to this project. I'm happy to help.

I edited https://github.com/bitcoinx/colored-coin-tools/wiki/Ngccc-transactions

Donations/bounties to 1FKYxGDywd7giFbnmKdvYmVgBHB9B2HXMw

Take a look:

https://github.com/richardkiss/pycoin

This is an implementation of a bunch of utility routines that may be useful when dealing with Bitcoin stuff. It has been test with Python 3.3 (but not Python 2.7).

• ECDSA Signing and Verification
• Encoding
• BIP0032 Wallet
• Transaction Validation and Signing

It's very easy to create and sign new standard transactions with this library.