In addition to pybitcoin, there is another python implementation of bitcion that you may be interested in:
https://github.com/phantomcircuit/bitcoin-altI think it is almost complete. The only thing that it is missing is the verify signature stuff in the scripting language.
Perfect! pybitoin seems to be abandoned, this project is in a much better state. Thank you!
It will do nicely in testing the dissector.