PyPond - Python Pond timeseries library.
PyPond runs on python 2.7 and 3.3 through 3.6.
The main project site has extensive documentation on the various structures (Event, TimeRange, TimeSeries, etc) that both implementations use internally. There is no need to duplicate that conceptual documentation here since the python implementation follows the same API and uses the same structures.
The tests can also be referred to as a fairly complete set of examples as well.