The threading module's isAlive() method had an is_alive() alias first created in python 2.6. The documentation page doesn't mention this...
http://docs.python.org/library/threading.html#threading.Thread.is_alive

However, this is noted for other methods like the Event's is_set()...
http://docs.python.org/library/threading.html#threading.Event.is_set

Very minor issue, just meant that I needed to do a bit of experimentation to figure it out.

I'm gonna hazard the guess that other methods like currentThread() and current_thread() are the same...
http://docs.python.org/library/threading.html#threading.current_thread

Since the news aliases are all over the module, the version change notice is at the top of the page:

"""
Note

Starting with Python 2.6, this module provides PEP 8 compliant aliases and properties to replace the camelCase names that were inspired by Java’s threading API. This updated API is compatible with that of the multiprocessing module. However, no schedule has been set for the deprecation of the camelCase names and they remain fully supported in both Python 2.x and 3.x.
"""