gjreda

from concurrent.futures import ProcessPoolExecutor
import concurrent.futures

from halas.parsers import boxscore

GAMES = [ ... ]

results = []
with ProcessPoolExecutor(max_workers=4) as executor:
    future_results = {executor.submit(boxscore, game):

gjreda

# for creating a column like "days since last login"

df = pd.read_clipboard(index_col=['customer_id', 'days'])
(df
 .groupby(level='customer_id')
 .did_login
 .cumsum()
 .to_frame()
 .groupby(level='customer_id')
 .apply(lambda g: g.groupby('did_login').cumcount())

gjreda

# OSX 10.7.5
# python 2.7.5
# pandas 0.13.0
# numpy 1.8.0

import pandas as pd
import numpy as np
from StringIO import StringIO

d = """row1,'2013-10-01'