pythril
Python data science tools for large data sets.
The name is a play on mithril, a precious ore in Middle-earth, and data mining.
Example
Extensions of the builtin collections.counters
for counting faceted data.
from pythril.counters import DictCounter
counter = Dictcounter(header=['x', 'y'])
counter.add(dict(x=1, y=2, z=3))
counter[(1, 2)] == 1 # True