There are several.
I think the node and php libraries are for interacting more with simplewallet in particular, but the Python library is for both daemon and wallet I believe.
For python, you can use MoneroPy. It is still pre-beta and under development, but has pure python implementations for wallet account creation, TX Extra parsing, integrated address encoding and decoding, transaction ID generation, and other goodies. Speed improvements and Monero Core library wrappers are planned for offloading calculations to same code at used by the core projects (SUPERCOP crypto, etc) rather than using Python, though this is probably a ways off.